./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/loop-tiling-eq.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 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 07:52:45,406 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 07:52:45,467 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-17 07:52:45,470 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 07:52:45,472 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 07:52:45,494 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 07:52:45,495 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 07:52:45,496 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 07:52:45,496 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 07:52:45,497 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 07:52:45,498 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 07:52:45,498 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 07:52:45,498 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 07:52:45,499 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 07:52:45,500 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 07:52:45,500 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 07:52:45,500 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-17 07:52:45,500 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 07:52:45,501 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 07:52:45,501 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 07:52:45,501 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 07:52:45,501 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-17 07:52:45,502 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 07:52:45,502 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-17 07:52:45,502 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 07:52:45,502 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-17 07:52:45,502 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 07:52:45,503 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 07:52:45,503 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-17 07:52:45,503 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 07:52:45,503 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 07:52:45,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 07:52:45,503 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 07:52:45,504 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 07:52:45,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:52:45,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 07:52:45,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 07:52:45,505 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-17 07:52:45,505 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 07:52:45,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 07:52:45,505 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 07:52:45,505 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 07:52:45,505 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 07:52:45,506 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 07:52:45,506 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 [2024-11-17 07:52:45,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 07:52:45,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 07:52:45,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 07:52:45,719 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 07:52:45,719 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 07:52:45,720 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2024-11-17 07:52:47,132 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 07:52:47,318 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 07:52:47,319 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2024-11-17 07:52:47,335 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a5341910/85beb9ad57ed4d969f9e21c7719f96a2/FLAG954765dfe [2024-11-17 07:52:47,344 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a5341910/85beb9ad57ed4d969f9e21c7719f96a2 [2024-11-17 07:52:47,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 07:52:47,347 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 07:52:47,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 07:52:47,348 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 07:52:47,351 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 07:52:47,352 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,352 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47f8212a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47, skipping insertion in model container [2024-11-17 07:52:47,353 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,374 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 07:52:47,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:52:47,577 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 07:52:47,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 07:52:47,611 INFO L204 MainTranslator]: Completed translation [2024-11-17 07:52:47,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47 WrapperNode [2024-11-17 07:52:47,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 07:52:47,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 07:52:47,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 07:52:47,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 07:52:47,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,626 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,647 INFO L138 Inliner]: procedures = 24, calls = 32, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 202 [2024-11-17 07:52:47,647 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 07:52:47,648 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 07:52:47,648 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 07:52:47,648 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 07:52:47,656 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,657 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,660 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,674 INFO L175 MemorySlicer]: Split 14 memory accesses to 3 slices as follows [2, 9, 3]. 64 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 6 writes are split as follows [0, 5, 1]. [2024-11-17 07:52:47,675 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,675 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,682 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,683 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,685 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,686 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,688 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 07:52:47,689 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 07:52:47,689 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 07:52:47,689 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 07:52:47,690 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (1/1) ... [2024-11-17 07:52:47,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 07:52:47,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:52:47,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 07:52:47,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 07:52:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-17 07:52:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-17 07:52:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-17 07:52:47,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 07:52:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 07:52:47,760 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 07:52:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 07:52:47,760 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 07:52:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 07:52:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 07:52:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 07:52:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-17 07:52:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-17 07:52:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-17 07:52:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 07:52:47,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 07:52:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 07:52:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 07:52:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 07:52:47,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 07:52:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 07:52:47,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 07:52:47,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 07:52:47,764 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 07:52:47,848 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 07:52:47,850 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 07:52:48,211 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 07:52:48,211 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 07:52:48,435 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 07:52:48,435 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 07:52:48,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:52:48 BoogieIcfgContainer [2024-11-17 07:52:48,435 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 07:52:48,437 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 07:52:48,437 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 07:52:48,440 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 07:52:48,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 07:52:47" (1/3) ... [2024-11-17 07:52:48,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe1c469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:52:48, skipping insertion in model container [2024-11-17 07:52:48,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 07:52:47" (2/3) ... [2024-11-17 07:52:48,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fe1c469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 07:52:48, skipping insertion in model container [2024-11-17 07:52:48,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 07:52:48" (3/3) ... [2024-11-17 07:52:48,464 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2024-11-17 07:52:48,484 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 07:52:48,484 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2024-11-17 07:52:48,484 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 07:52:48,527 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 07:52:48,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 102 transitions, 218 flow [2024-11-17 07:52:48,596 INFO L124 PetriNetUnfolderBase]: 15/100 cut-off events. [2024-11-17 07:52:48,596 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 07:52:48,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 100 events. 15/100 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 243 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 62. Up to 2 conditions per place. [2024-11-17 07:52:48,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 102 transitions, 218 flow [2024-11-17 07:52:48,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 99 transitions, 210 flow [2024-11-17 07:52:48,616 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 07:52:48,623 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;@68851110, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 07:52:48,623 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-17 07:52:48,627 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 07:52:48,627 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2024-11-17 07:52:48,627 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 07:52:48,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:48,629 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-17 07:52:48,629 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:52:48,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:48,634 INFO L85 PathProgramCache]: Analyzing trace with hash 699688, now seen corresponding path program 1 times [2024-11-17 07:52:48,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:48,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912830131] [2024-11-17 07:52:48,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:48,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 07:52:48,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1187454573] [2024-11-17 07:52:48,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:48,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:48,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:52:48,728 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:52:48,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 07:52:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:48,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:52:48,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:52:48,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:48,865 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:52:48,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:48,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912830131] [2024-11-17 07:52:48,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 07:52:48,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187454573] [2024-11-17 07:52:48,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187454573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:48,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:48,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:52:48,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37153463] [2024-11-17 07:52:48,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:48,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:48,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:48,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:48,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:48,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 102 [2024-11-17 07:52:48,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 99 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:48,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:48,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 102 [2024-11-17 07:52:48,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:49,202 INFO L124 PetriNetUnfolderBase]: 226/613 cut-off events. [2024-11-17 07:52:49,202 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-11-17 07:52:49,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1052 conditions, 613 events. 226/613 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3434 event pairs, 150 based on Foata normal form. 77/567 useless extension candidates. Maximal degree in co-relation 414. Up to 199 conditions per place. [2024-11-17 07:52:49,210 INFO L140 encePairwiseOnDemand]: 89/102 looper letters, 69 selfloop transitions, 4 changer transitions 0/125 dead transitions. [2024-11-17 07:52:49,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 125 transitions, 420 flow [2024-11-17 07:52:49,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:52:49,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:52:49,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 359 transitions. [2024-11-17 07:52:49,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.703921568627451 [2024-11-17 07:52:49,227 INFO L175 Difference]: Start difference. First operand has 91 places, 99 transitions, 210 flow. Second operand 5 states and 359 transitions. [2024-11-17 07:52:49,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 125 transitions, 420 flow [2024-11-17 07:52:49,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 125 transitions, 404 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 07:52:49,235 INFO L231 Difference]: Finished difference. Result has 90 places, 91 transitions, 199 flow [2024-11-17 07:52:49,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=90, PETRI_TRANSITIONS=91} [2024-11-17 07:52:49,241 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, -1 predicate places. [2024-11-17 07:52:49,241 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 91 transitions, 199 flow [2024-11-17 07:52:49,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:49,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:49,242 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 07:52:49,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 07:52:49,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-17 07:52:49,447 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:52:49,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:49,448 INFO L85 PathProgramCache]: Analyzing trace with hash 21691868, now seen corresponding path program 1 times [2024-11-17 07:52:49,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:49,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417223944] [2024-11-17 07:52:49,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:49,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 07:52:49,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1659320394] [2024-11-17 07:52:49,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:49,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:49,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:52:49,472 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:52:49,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 07:52:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:49,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:52:49,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:52:49,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:49,603 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:52:49,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:49,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417223944] [2024-11-17 07:52:49,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 07:52:49,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659320394] [2024-11-17 07:52:49,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659320394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:49,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:49,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:52:49,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391312040] [2024-11-17 07:52:49,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:49,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:49,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:49,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:49,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:49,641 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 102 [2024-11-17 07:52:49,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 91 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:49,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:49,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 102 [2024-11-17 07:52:49,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:49,803 INFO L124 PetriNetUnfolderBase]: 226/603 cut-off events. [2024-11-17 07:52:49,803 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-17 07:52:49,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 603 events. 226/603 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3357 event pairs, 150 based on Foata normal form. 2/486 useless extension candidates. Maximal degree in co-relation 508. Up to 200 conditions per place. [2024-11-17 07:52:49,808 INFO L140 encePairwiseOnDemand]: 95/102 looper letters, 65 selfloop transitions, 4 changer transitions 1/122 dead transitions. [2024-11-17 07:52:49,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 122 transitions, 405 flow [2024-11-17 07:52:49,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:52:49,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:52:49,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 343 transitions. [2024-11-17 07:52:49,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6725490196078432 [2024-11-17 07:52:49,814 INFO L175 Difference]: Start difference. First operand has 90 places, 91 transitions, 199 flow. Second operand 5 states and 343 transitions. [2024-11-17 07:52:49,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 122 transitions, 405 flow [2024-11-17 07:52:49,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 122 transitions, 401 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:52:49,816 INFO L231 Difference]: Finished difference. Result has 93 places, 91 transitions, 210 flow [2024-11-17 07:52:49,816 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=93, PETRI_TRANSITIONS=91} [2024-11-17 07:52:49,817 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 2 predicate places. [2024-11-17 07:52:49,817 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 91 transitions, 210 flow [2024-11-17 07:52:49,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:49,817 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:49,817 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-17 07:52:49,830 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 07:52:50,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-17 07:52:50,023 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:52:50,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:50,024 INFO L85 PathProgramCache]: Analyzing trace with hash -629776655, now seen corresponding path program 1 times [2024-11-17 07:52:50,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:50,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820624298] [2024-11-17 07:52:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:50,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 07:52:50,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [378774279] [2024-11-17 07:52:50,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:50,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:50,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:52:50,064 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 07:52:50,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 07:52:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:50,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:52:50,130 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:52:50,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:50,204 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:52:50,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:50,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820624298] [2024-11-17 07:52:50,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 07:52:50,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378774279] [2024-11-17 07:52:50,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378774279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:50,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:50,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 07:52:50,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729586982] [2024-11-17 07:52:50,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:50,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:50,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:50,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:50,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:50,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 102 [2024-11-17 07:52:50,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 91 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:50,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:50,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 102 [2024-11-17 07:52:50,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:50,755 INFO L124 PetriNetUnfolderBase]: 226/602 cut-off events. [2024-11-17 07:52:50,755 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-17 07:52:50,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1023 conditions, 602 events. 226/602 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3343 event pairs, 150 based on Foata normal form. 1/485 useless extension candidates. Maximal degree in co-relation 509. Up to 198 conditions per place. [2024-11-17 07:52:50,762 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 64 selfloop transitions, 4 changer transitions 1/121 dead transitions. [2024-11-17 07:52:50,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 121 transitions, 410 flow [2024-11-17 07:52:50,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:52:50,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:52:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 340 transitions. [2024-11-17 07:52:50,765 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-17 07:52:50,765 INFO L175 Difference]: Start difference. First operand has 93 places, 91 transitions, 210 flow. Second operand 5 states and 340 transitions. [2024-11-17 07:52:50,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 121 transitions, 410 flow [2024-11-17 07:52:50,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 121 transitions, 402 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:52:50,768 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 206 flow [2024-11-17 07:52:50,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2024-11-17 07:52:50,772 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 2 predicate places. [2024-11-17 07:52:50,773 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 206 flow [2024-11-17 07:52:50,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:50,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:50,773 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:50,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-17 07:52:50,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:50,974 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:52:50,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:50,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1951760771, now seen corresponding path program 1 times [2024-11-17 07:52:50,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:50,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462437389] [2024-11-17 07:52:50,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:50,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 07:52:51,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938954828] [2024-11-17 07:52:51,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:51,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:51,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:52:51,010 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) [2024-11-17 07:52:51,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 07:52:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:51,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:52:51,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:52:51,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:51,219 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:52:51,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:51,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462437389] [2024-11-17 07:52:51,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 07:52:51,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938954828] [2024-11-17 07:52:51,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938954828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:51,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:51,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:52:51,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033253992] [2024-11-17 07:52:51,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:51,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:52:51,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:51,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:52:51,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 07:52:51,400 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 102 [2024-11-17 07:52:51,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 53.833333333333336) internal successors, (323), 6 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:51,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:51,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 102 [2024-11-17 07:52:51,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:51,584 INFO L124 PetriNetUnfolderBase]: 226/601 cut-off events. [2024-11-17 07:52:51,585 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 07:52:51,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 601 events. 226/601 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3338 event pairs, 150 based on Foata normal form. 1/484 useless extension candidates. Maximal degree in co-relation 510. Up to 196 conditions per place. [2024-11-17 07:52:51,587 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 63 selfloop transitions, 5 changer transitions 1/120 dead transitions. [2024-11-17 07:52:51,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 120 transitions, 406 flow [2024-11-17 07:52:51,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:52:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:52:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 388 transitions. [2024-11-17 07:52:51,588 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6339869281045751 [2024-11-17 07:52:51,588 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 206 flow. Second operand 6 states and 388 transitions. [2024-11-17 07:52:51,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 120 transitions, 406 flow [2024-11-17 07:52:51,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 120 transitions, 399 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:52:51,594 INFO L231 Difference]: Finished difference. Result has 94 places, 89 transitions, 205 flow [2024-11-17 07:52:51,594 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=94, PETRI_TRANSITIONS=89} [2024-11-17 07:52:51,594 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 3 predicate places. [2024-11-17 07:52:51,594 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 89 transitions, 205 flow [2024-11-17 07:52:51,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.833333333333336) internal successors, (323), 6 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:51,595 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:51,595 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:51,612 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 07:52:51,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:51,795 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:52:51,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:51,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1186565072, now seen corresponding path program 1 times [2024-11-17 07:52:51,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:51,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742480645] [2024-11-17 07:52:51,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:51,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:51,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:51,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:51,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742480645] [2024-11-17 07:52:51,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742480645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:51,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:51,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:52:51,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916568923] [2024-11-17 07:52:51,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:51,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:51,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:51,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:51,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:51,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 102 [2024-11-17 07:52:51,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 89 transitions, 205 flow. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:51,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:51,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 102 [2024-11-17 07:52:51,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:52,097 INFO L124 PetriNetUnfolderBase]: 232/637 cut-off events. [2024-11-17 07:52:52,097 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-17 07:52:52,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 637 events. 232/637 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3606 event pairs, 150 based on Foata normal form. 6/516 useless extension candidates. Maximal degree in co-relation 543. Up to 410 conditions per place. [2024-11-17 07:52:52,101 INFO L140 encePairwiseOnDemand]: 85/102 looper letters, 40 selfloop transitions, 11 changer transitions 0/98 dead transitions. [2024-11-17 07:52:52,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 98 transitions, 325 flow [2024-11-17 07:52:52,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:52:52,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:52:52,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 268 transitions. [2024-11-17 07:52:52,102 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2024-11-17 07:52:52,102 INFO L175 Difference]: Start difference. First operand has 94 places, 89 transitions, 205 flow. Second operand 4 states and 268 transitions. [2024-11-17 07:52:52,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 98 transitions, 325 flow [2024-11-17 07:52:52,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 98 transitions, 309 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-17 07:52:52,105 INFO L231 Difference]: Finished difference. Result has 95 places, 98 transitions, 281 flow [2024-11-17 07:52:52,107 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=281, PETRI_PLACES=95, PETRI_TRANSITIONS=98} [2024-11-17 07:52:52,108 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 4 predicate places. [2024-11-17 07:52:52,110 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 98 transitions, 281 flow [2024-11-17 07:52:52,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:52,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:52,110 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:52,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 07:52:52,111 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:52:52,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:52,111 INFO L85 PathProgramCache]: Analyzing trace with hash -175845077, now seen corresponding path program 1 times [2024-11-17 07:52:52,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:52,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772648236] [2024-11-17 07:52:52,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:52,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:52,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:52,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:52,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772648236] [2024-11-17 07:52:52,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772648236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:52:52,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101033042] [2024-11-17 07:52:52,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:52,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:52,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:52:52,205 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) [2024-11-17 07:52:52,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 07:52:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:52,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:52:52,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:52:52,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:52,296 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:52:52,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101033042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:52,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:52:52,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-17 07:52:52,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671986363] [2024-11-17 07:52:52,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:52,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:52:52,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:52,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:52:52,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:52:52,332 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 102 [2024-11-17 07:52:52,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 98 transitions, 281 flow. Second operand has 6 states, 6 states have (on average 54.166666666666664) internal successors, (325), 6 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:52,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:52,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 102 [2024-11-17 07:52:52,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:52,481 INFO L124 PetriNetUnfolderBase]: 232/631 cut-off events. [2024-11-17 07:52:52,481 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2024-11-17 07:52:52,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 631 events. 232/631 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 3519 event pairs, 150 based on Foata normal form. 6/509 useless extension candidates. Maximal degree in co-relation 985. Up to 380 conditions per place. [2024-11-17 07:52:52,484 INFO L140 encePairwiseOnDemand]: 88/102 looper letters, 29 selfloop transitions, 19 changer transitions 0/95 dead transitions. [2024-11-17 07:52:52,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 95 transitions, 365 flow [2024-11-17 07:52:52,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:52:52,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:52:52,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 368 transitions. [2024-11-17 07:52:52,486 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6013071895424836 [2024-11-17 07:52:52,486 INFO L175 Difference]: Start difference. First operand has 95 places, 98 transitions, 281 flow. Second operand 6 states and 368 transitions. [2024-11-17 07:52:52,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 95 transitions, 365 flow [2024-11-17 07:52:52,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 95 transitions, 365 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:52:52,488 INFO L231 Difference]: Finished difference. Result has 97 places, 95 transitions, 307 flow [2024-11-17 07:52:52,488 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=97, PETRI_TRANSITIONS=95} [2024-11-17 07:52:52,489 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 6 predicate places. [2024-11-17 07:52:52,489 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 95 transitions, 307 flow [2024-11-17 07:52:52,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.166666666666664) internal successors, (325), 6 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:52,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:52,489 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:52,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 07:52:52,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:52,694 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:52:52,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:52,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1156229502, now seen corresponding path program 1 times [2024-11-17 07:52:52,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:52,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911723918] [2024-11-17 07:52:52,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:52,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:52,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:52,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:52,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911723918] [2024-11-17 07:52:52,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911723918] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:52:52,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729539804] [2024-11-17 07:52:52,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:52,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:52,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:52:52,768 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) [2024-11-17 07:52:52,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 07:52:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:52,828 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:52:52,829 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:52:52,853 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:52,853 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:52:52,910 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:52,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729539804] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:52:52,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:52:52,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:52:52,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95801513] [2024-11-17 07:52:52,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:52:52,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:52:52,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:52,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:52:52,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:52:52,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 102 [2024-11-17 07:52:52,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 95 transitions, 307 flow. Second operand has 12 states, 12 states have (on average 54.25) internal successors, (651), 12 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:52,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:52,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 102 [2024-11-17 07:52:52,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:53,175 INFO L124 PetriNetUnfolderBase]: 250/739 cut-off events. [2024-11-17 07:52:53,176 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2024-11-17 07:52:53,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1452 conditions, 739 events. 250/739 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4487 event pairs, 150 based on Foata normal form. 18/635 useless extension candidates. Maximal degree in co-relation 993. Up to 416 conditions per place. [2024-11-17 07:52:53,178 INFO L140 encePairwiseOnDemand]: 88/102 looper letters, 37 selfloop transitions, 38 changer transitions 0/122 dead transitions. [2024-11-17 07:52:53,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 122 transitions, 625 flow [2024-11-17 07:52:53,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:52:53,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:52:53,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 613 transitions. [2024-11-17 07:52:53,181 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6009803921568627 [2024-11-17 07:52:53,181 INFO L175 Difference]: Start difference. First operand has 97 places, 95 transitions, 307 flow. Second operand 10 states and 613 transitions. [2024-11-17 07:52:53,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 122 transitions, 625 flow [2024-11-17 07:52:53,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 122 transitions, 534 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-11-17 07:52:53,184 INFO L231 Difference]: Finished difference. Result has 104 places, 122 transitions, 512 flow [2024-11-17 07:52:53,184 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=512, PETRI_PLACES=104, PETRI_TRANSITIONS=122} [2024-11-17 07:52:53,185 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 13 predicate places. [2024-11-17 07:52:53,185 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 122 transitions, 512 flow [2024-11-17 07:52:53,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 54.25) internal successors, (651), 12 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:53,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:53,185 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:53,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-17 07:52:53,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:53,386 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:52:53,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:53,387 INFO L85 PathProgramCache]: Analyzing trace with hash 622223265, now seen corresponding path program 1 times [2024-11-17 07:52:53,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:53,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612657797] [2024-11-17 07:52:53,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:53,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:53,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:53,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:53,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612657797] [2024-11-17 07:52:53,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612657797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:53,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:53,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:52:53,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915753598] [2024-11-17 07:52:53,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:53,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:52:53,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:53,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:52:53,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:52:53,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 102 [2024-11-17 07:52:53,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 122 transitions, 512 flow. Second operand has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:53,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:53,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 102 [2024-11-17 07:52:53,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:53,814 INFO L124 PetriNetUnfolderBase]: 244/703 cut-off events. [2024-11-17 07:52:53,814 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2024-11-17 07:52:53,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1386 conditions, 703 events. 244/703 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4169 event pairs, 150 based on Foata normal form. 1/592 useless extension candidates. Maximal degree in co-relation 1219. Up to 234 conditions per place. [2024-11-17 07:52:53,817 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 114 selfloop transitions, 9 changer transitions 1/172 dead transitions. [2024-11-17 07:52:53,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 172 transitions, 1020 flow [2024-11-17 07:52:53,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:52:53,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:52:53,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 340 transitions. [2024-11-17 07:52:53,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-17 07:52:53,819 INFO L175 Difference]: Start difference. First operand has 104 places, 122 transitions, 512 flow. Second operand 5 states and 340 transitions. [2024-11-17 07:52:53,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 172 transitions, 1020 flow [2024-11-17 07:52:53,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 172 transitions, 961 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-11-17 07:52:53,823 INFO L231 Difference]: Finished difference. Result has 108 places, 128 transitions, 549 flow [2024-11-17 07:52:53,823 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=549, PETRI_PLACES=108, PETRI_TRANSITIONS=128} [2024-11-17 07:52:53,824 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 17 predicate places. [2024-11-17 07:52:53,825 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 128 transitions, 549 flow [2024-11-17 07:52:53,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.6) internal successors, (283), 5 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:53,825 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:53,825 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:53,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 07:52:53,825 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:52:53,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:53,826 INFO L85 PathProgramCache]: Analyzing trace with hash 2000911521, now seen corresponding path program 1 times [2024-11-17 07:52:53,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:53,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097784519] [2024-11-17 07:52:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:53,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:53,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:53,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:53,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097784519] [2024-11-17 07:52:53,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097784519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:53,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:53,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:52:53,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630602871] [2024-11-17 07:52:53,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:53,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:53,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:53,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:53,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:53,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 102 [2024-11-17 07:52:53,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 128 transitions, 549 flow. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:53,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:53,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 102 [2024-11-17 07:52:53,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:54,034 INFO L124 PetriNetUnfolderBase]: 476/1185 cut-off events. [2024-11-17 07:52:54,034 INFO L125 PetriNetUnfolderBase]: For 372/372 co-relation queries the response was YES. [2024-11-17 07:52:54,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2228 conditions, 1185 events. 476/1185 cut-off events. For 372/372 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7558 event pairs, 234 based on Foata normal form. 32/1023 useless extension candidates. Maximal degree in co-relation 2062. Up to 645 conditions per place. [2024-11-17 07:52:54,040 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 101 selfloop transitions, 4 changer transitions 0/153 dead transitions. [2024-11-17 07:52:54,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 153 transitions, 811 flow [2024-11-17 07:52:54,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:52:54,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:52:54,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 292 transitions. [2024-11-17 07:52:54,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7156862745098039 [2024-11-17 07:52:54,041 INFO L175 Difference]: Start difference. First operand has 108 places, 128 transitions, 549 flow. Second operand 4 states and 292 transitions. [2024-11-17 07:52:54,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 153 transitions, 811 flow [2024-11-17 07:52:54,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 153 transitions, 806 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:52:54,044 INFO L231 Difference]: Finished difference. Result has 111 places, 131 transitions, 573 flow [2024-11-17 07:52:54,045 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=573, PETRI_PLACES=111, PETRI_TRANSITIONS=131} [2024-11-17 07:52:54,045 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 20 predicate places. [2024-11-17 07:52:54,045 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 131 transitions, 573 flow [2024-11-17 07:52:54,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:54,046 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:54,046 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:54,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 07:52:54,046 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:52:54,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:54,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1516382380, now seen corresponding path program 1 times [2024-11-17 07:52:54,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:54,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644883281] [2024-11-17 07:52:54,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:54,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:54,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:54,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:54,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644883281] [2024-11-17 07:52:54,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644883281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:54,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:54,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:52:54,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257476468] [2024-11-17 07:52:54,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:54,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:52:54,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:54,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:52:54,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:52:54,116 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 102 [2024-11-17 07:52:54,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 131 transitions, 573 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:54,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:54,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 102 [2024-11-17 07:52:54,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:54,259 INFO L124 PetriNetUnfolderBase]: 382/1016 cut-off events. [2024-11-17 07:52:54,259 INFO L125 PetriNetUnfolderBase]: For 786/834 co-relation queries the response was YES. [2024-11-17 07:52:54,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2276 conditions, 1016 events. 382/1016 cut-off events. For 786/834 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6501 event pairs, 234 based on Foata normal form. 1/843 useless extension candidates. Maximal degree in co-relation 2078. Up to 639 conditions per place. [2024-11-17 07:52:54,264 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 83 selfloop transitions, 18 changer transitions 0/149 dead transitions. [2024-11-17 07:52:54,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 149 transitions, 881 flow [2024-11-17 07:52:54,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:52:54,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:52:54,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 273 transitions. [2024-11-17 07:52:54,265 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6691176470588235 [2024-11-17 07:52:54,265 INFO L175 Difference]: Start difference. First operand has 111 places, 131 transitions, 573 flow. Second operand 4 states and 273 transitions. [2024-11-17 07:52:54,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 149 transitions, 881 flow [2024-11-17 07:52:54,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 149 transitions, 878 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:52:54,269 INFO L231 Difference]: Finished difference. Result has 115 places, 138 transitions, 678 flow [2024-11-17 07:52:54,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=678, PETRI_PLACES=115, PETRI_TRANSITIONS=138} [2024-11-17 07:52:54,271 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 24 predicate places. [2024-11-17 07:52:54,271 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 138 transitions, 678 flow [2024-11-17 07:52:54,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:54,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:54,271 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:54,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 07:52:54,271 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:52:54,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:54,272 INFO L85 PathProgramCache]: Analyzing trace with hash 662657985, now seen corresponding path program 1 times [2024-11-17 07:52:54,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:54,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263533549] [2024-11-17 07:52:54,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:54,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:54,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:54,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:54,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263533549] [2024-11-17 07:52:54,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263533549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:54,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:54,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:52:54,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864642756] [2024-11-17 07:52:54,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:54,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:52:54,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:54,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:52:54,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:52:54,405 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 102 [2024-11-17 07:52:54,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 138 transitions, 678 flow. Second operand has 5 states, 5 states have (on average 55.8) internal successors, (279), 5 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:54,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:54,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 102 [2024-11-17 07:52:54,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:54,540 INFO L124 PetriNetUnfolderBase]: 314/834 cut-off events. [2024-11-17 07:52:54,540 INFO L125 PetriNetUnfolderBase]: For 848/888 co-relation queries the response was YES. [2024-11-17 07:52:54,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1941 conditions, 834 events. 314/834 cut-off events. For 848/888 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4881 event pairs, 183 based on Foata normal form. 13/770 useless extension candidates. Maximal degree in co-relation 1793. Up to 418 conditions per place. [2024-11-17 07:52:54,544 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 130 selfloop transitions, 5 changer transitions 7/188 dead transitions. [2024-11-17 07:52:54,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 188 transitions, 1216 flow [2024-11-17 07:52:54,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:52:54,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:52:54,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 332 transitions. [2024-11-17 07:52:54,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6509803921568628 [2024-11-17 07:52:54,546 INFO L175 Difference]: Start difference. First operand has 115 places, 138 transitions, 678 flow. Second operand 5 states and 332 transitions. [2024-11-17 07:52:54,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 188 transitions, 1216 flow [2024-11-17 07:52:54,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 188 transitions, 1203 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:52:54,550 INFO L231 Difference]: Finished difference. Result has 120 places, 140 transitions, 690 flow [2024-11-17 07:52:54,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=690, PETRI_PLACES=120, PETRI_TRANSITIONS=140} [2024-11-17 07:52:54,551 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 29 predicate places. [2024-11-17 07:52:54,551 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 140 transitions, 690 flow [2024-11-17 07:52:54,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 55.8) internal successors, (279), 5 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:54,552 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:54,552 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:54,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 07:52:54,552 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:52:54,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:54,552 INFO L85 PathProgramCache]: Analyzing trace with hash -79681861, now seen corresponding path program 1 times [2024-11-17 07:52:54,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:54,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831702532] [2024-11-17 07:52:54,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:54,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:54,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-17 07:52:54,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:54,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831702532] [2024-11-17 07:52:54,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831702532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:54,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:54,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 07:52:54,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594794507] [2024-11-17 07:52:54,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:54,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:52:54,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:54,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:52:54,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:52:54,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 102 [2024-11-17 07:52:54,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 140 transitions, 690 flow. Second operand has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:54,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:54,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 102 [2024-11-17 07:52:54,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:54,883 INFO L124 PetriNetUnfolderBase]: 382/1338 cut-off events. [2024-11-17 07:52:54,883 INFO L125 PetriNetUnfolderBase]: For 1268/1300 co-relation queries the response was YES. [2024-11-17 07:52:54,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3014 conditions, 1338 events. 382/1338 cut-off events. For 1268/1300 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9330 event pairs, 197 based on Foata normal form. 24/1247 useless extension candidates. Maximal degree in co-relation 2723. Up to 505 conditions per place. [2024-11-17 07:52:54,889 INFO L140 encePairwiseOnDemand]: 88/102 looper letters, 147 selfloop transitions, 18 changer transitions 10/222 dead transitions. [2024-11-17 07:52:54,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 222 transitions, 1486 flow [2024-11-17 07:52:54,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:52:54,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:52:54,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 429 transitions. [2024-11-17 07:52:54,891 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7009803921568627 [2024-11-17 07:52:54,891 INFO L175 Difference]: Start difference. First operand has 120 places, 140 transitions, 690 flow. Second operand 6 states and 429 transitions. [2024-11-17 07:52:54,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 222 transitions, 1486 flow [2024-11-17 07:52:54,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 222 transitions, 1481 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 07:52:54,897 INFO L231 Difference]: Finished difference. Result has 127 places, 148 transitions, 806 flow [2024-11-17 07:52:54,897 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=806, PETRI_PLACES=127, PETRI_TRANSITIONS=148} [2024-11-17 07:52:54,898 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 36 predicate places. [2024-11-17 07:52:54,898 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 148 transitions, 806 flow [2024-11-17 07:52:54,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:54,898 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:54,898 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:54,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 07:52:54,898 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:52:54,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:54,899 INFO L85 PathProgramCache]: Analyzing trace with hash 49606796, now seen corresponding path program 1 times [2024-11-17 07:52:54,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:54,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385920669] [2024-11-17 07:52:54,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:54,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:54,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:54,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:54,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:54,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385920669] [2024-11-17 07:52:54,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385920669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:52:54,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:52:54,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:52:54,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651266057] [2024-11-17 07:52:54,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:52:54,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:52:54,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:52:54,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:52:54,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:52:54,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 102 [2024-11-17 07:52:54,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 148 transitions, 806 flow. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:54,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:52:54,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 102 [2024-11-17 07:52:54,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:52:55,174 INFO L124 PetriNetUnfolderBase]: 379/1218 cut-off events. [2024-11-17 07:52:55,175 INFO L125 PetriNetUnfolderBase]: For 1879/1879 co-relation queries the response was YES. [2024-11-17 07:52:55,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3128 conditions, 1218 events. 379/1218 cut-off events. For 1879/1879 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7710 event pairs, 242 based on Foata normal form. 2/1153 useless extension candidates. Maximal degree in co-relation 2781. Up to 484 conditions per place. [2024-11-17 07:52:55,180 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 139 selfloop transitions, 9 changer transitions 6/203 dead transitions. [2024-11-17 07:52:55,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 203 transitions, 1481 flow [2024-11-17 07:52:55,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:52:55,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:52:55,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 336 transitions. [2024-11-17 07:52:55,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6588235294117647 [2024-11-17 07:52:55,182 INFO L175 Difference]: Start difference. First operand has 127 places, 148 transitions, 806 flow. Second operand 5 states and 336 transitions. [2024-11-17 07:52:55,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 203 transitions, 1481 flow [2024-11-17 07:52:55,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 203 transitions, 1481 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 07:52:55,188 INFO L231 Difference]: Finished difference. Result has 132 places, 147 transitions, 826 flow [2024-11-17 07:52:55,188 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=826, PETRI_PLACES=132, PETRI_TRANSITIONS=147} [2024-11-17 07:52:55,188 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 41 predicate places. [2024-11-17 07:52:55,189 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 147 transitions, 826 flow [2024-11-17 07:52:55,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:52:55,189 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:52:55,189 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2024-11-17 07:52:55,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-17 07:52:55,189 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:52:55,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:52:55,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1481066897, now seen corresponding path program 2 times [2024-11-17 07:52:55,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:52:55,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630626881] [2024-11-17 07:52:55,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:52:55,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:52:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:52:55,320 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:52:55,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:52:55,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630626881] [2024-11-17 07:52:55,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630626881] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:52:55,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719339787] [2024-11-17 07:52:55,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:52:55,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:52:55,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:52:55,322 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) [2024-11-17 07:52:55,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 07:52:55,382 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:52:55,382 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:52:55,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-17 07:52:55,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:05,444 WARN L873 $PredicateComparison]: unable to prove that (exists ((~M~0 Int) (~N~0 Int)) (let ((.cse0 (* ~N~0 ~M~0))) (and (<= .cse0 2147483647) (<= (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post26#1| 1) .cse0)))) is different from true [2024-11-17 07:53:05,453 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 8 not checked. [2024-11-17 07:53:05,453 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:07,329 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:53:07,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719339787] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:07,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:07,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 15 [2024-11-17 07:53:07,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772937336] [2024-11-17 07:53:07,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:07,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-17 07:53:07,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:07,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-17 07:53:07,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=146, Unknown=13, NotChecked=26, Total=240 [2024-11-17 07:53:07,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 102 [2024-11-17 07:53:07,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 147 transitions, 826 flow. Second operand has 16 states, 16 states have (on average 49.0) internal successors, (784), 16 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:07,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:07,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 102 [2024-11-17 07:53:07,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:14,031 INFO L124 PetriNetUnfolderBase]: 389/1452 cut-off events. [2024-11-17 07:53:14,031 INFO L125 PetriNetUnfolderBase]: For 1923/1943 co-relation queries the response was YES. [2024-11-17 07:53:14,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3592 conditions, 1452 events. 389/1452 cut-off events. For 1923/1943 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 10025 event pairs, 242 based on Foata normal form. 12/1345 useless extension candidates. Maximal degree in co-relation 3015. Up to 678 conditions per place. [2024-11-17 07:53:14,037 INFO L140 encePairwiseOnDemand]: 86/102 looper letters, 70 selfloop transitions, 75 changer transitions 0/186 dead transitions. [2024-11-17 07:53:14,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 186 transitions, 1272 flow [2024-11-17 07:53:14,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-17 07:53:14,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-17 07:53:14,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1250 transitions. [2024-11-17 07:53:14,040 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5106209150326797 [2024-11-17 07:53:14,040 INFO L175 Difference]: Start difference. First operand has 132 places, 147 transitions, 826 flow. Second operand 24 states and 1250 transitions. [2024-11-17 07:53:14,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 186 transitions, 1272 flow [2024-11-17 07:53:14,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 186 transitions, 1241 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-17 07:53:14,046 INFO L231 Difference]: Finished difference. Result has 153 places, 167 transitions, 1098 flow [2024-11-17 07:53:14,046 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1098, PETRI_PLACES=153, PETRI_TRANSITIONS=167} [2024-11-17 07:53:14,046 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 62 predicate places. [2024-11-17 07:53:14,046 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 167 transitions, 1098 flow [2024-11-17 07:53:14,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 49.0) internal successors, (784), 16 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:14,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:14,047 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:14,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-17 07:53:14,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:14,254 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:53:14,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:14,255 INFO L85 PathProgramCache]: Analyzing trace with hash -726758453, now seen corresponding path program 1 times [2024-11-17 07:53:14,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:14,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015132671] [2024-11-17 07:53:14,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:14,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:14,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:14,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015132671] [2024-11-17 07:53:14,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015132671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:14,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405291340] [2024-11-17 07:53:14,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:14,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:14,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:14,330 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) [2024-11-17 07:53:14,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 07:53:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:14,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:53:14,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:14,453 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 07:53:14,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405291340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:53:14,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 07:53:14,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-17 07:53:14,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910159297] [2024-11-17 07:53:14,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:53:14,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 07:53:14,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:14,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 07:53:14,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-17 07:53:14,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 102 [2024-11-17 07:53:14,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 167 transitions, 1098 flow. Second operand has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:14,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:14,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 102 [2024-11-17 07:53:14,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:14,644 INFO L124 PetriNetUnfolderBase]: 389/1416 cut-off events. [2024-11-17 07:53:14,644 INFO L125 PetriNetUnfolderBase]: For 2802/2822 co-relation queries the response was YES. [2024-11-17 07:53:14,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3671 conditions, 1416 events. 389/1416 cut-off events. For 2802/2822 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9687 event pairs, 242 based on Foata normal form. 2/1291 useless extension candidates. Maximal degree in co-relation 3422. Up to 667 conditions per place. [2024-11-17 07:53:14,651 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 93 selfloop transitions, 29 changer transitions 0/181 dead transitions. [2024-11-17 07:53:14,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 181 transitions, 1487 flow [2024-11-17 07:53:14,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:53:14,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:53:14,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 385 transitions. [2024-11-17 07:53:14,652 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6290849673202614 [2024-11-17 07:53:14,652 INFO L175 Difference]: Start difference. First operand has 153 places, 167 transitions, 1098 flow. Second operand 6 states and 385 transitions. [2024-11-17 07:53:14,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 181 transitions, 1487 flow [2024-11-17 07:53:14,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 181 transitions, 1319 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-11-17 07:53:14,660 INFO L231 Difference]: Finished difference. Result has 148 places, 166 transitions, 1013 flow [2024-11-17 07:53:14,660 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1013, PETRI_PLACES=148, PETRI_TRANSITIONS=166} [2024-11-17 07:53:14,660 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 57 predicate places. [2024-11-17 07:53:14,660 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 166 transitions, 1013 flow [2024-11-17 07:53:14,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:14,661 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:14,661 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:14,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-17 07:53:14,861 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,SelfDestructingSolverStorable14 [2024-11-17 07:53:14,862 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:53:14,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:14,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1054674917, now seen corresponding path program 1 times [2024-11-17 07:53:14,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:14,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087831265] [2024-11-17 07:53:14,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:14,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:14,951 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:14,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:14,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087831265] [2024-11-17 07:53:14,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087831265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:14,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971267871] [2024-11-17 07:53:14,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:14,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:14,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:14,953 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) [2024-11-17 07:53:14,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 07:53:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:15,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:53:15,031 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:15,051 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:15,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:15,082 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:15,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971267871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:15,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:15,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:53:15,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363952241] [2024-11-17 07:53:15,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:15,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:53:15,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:15,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:53:15,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:53:15,102 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 102 [2024-11-17 07:53:15,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 166 transitions, 1013 flow. Second operand has 12 states, 12 states have (on average 58.916666666666664) internal successors, (707), 12 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:15,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:15,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 102 [2024-11-17 07:53:15,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:15,385 INFO L124 PetriNetUnfolderBase]: 431/1674 cut-off events. [2024-11-17 07:53:15,385 INFO L125 PetriNetUnfolderBase]: For 3197/3217 co-relation queries the response was YES. [2024-11-17 07:53:15,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4430 conditions, 1674 events. 431/1674 cut-off events. For 3197/3217 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 11506 event pairs, 242 based on Foata normal form. 6/1555 useless extension candidates. Maximal degree in co-relation 4106. Up to 717 conditions per place. [2024-11-17 07:53:15,393 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 147 selfloop transitions, 47 changer transitions 0/253 dead transitions. [2024-11-17 07:53:15,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 253 transitions, 2148 flow [2024-11-17 07:53:15,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:53:15,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:53:15,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 633 transitions. [2024-11-17 07:53:15,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6205882352941177 [2024-11-17 07:53:15,395 INFO L175 Difference]: Start difference. First operand has 148 places, 166 transitions, 1013 flow. Second operand 10 states and 633 transitions. [2024-11-17 07:53:15,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 253 transitions, 2148 flow [2024-11-17 07:53:15,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 253 transitions, 2022 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-11-17 07:53:15,405 INFO L231 Difference]: Finished difference. Result has 156 places, 193 transitions, 1296 flow [2024-11-17 07:53:15,405 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1296, PETRI_PLACES=156, PETRI_TRANSITIONS=193} [2024-11-17 07:53:15,405 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 65 predicate places. [2024-11-17 07:53:15,406 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 193 transitions, 1296 flow [2024-11-17 07:53:15,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 58.916666666666664) internal successors, (707), 12 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:15,406 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:15,406 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:15,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-17 07:53:15,607 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,SelfDestructingSolverStorable15 [2024-11-17 07:53:15,607 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:53:15,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:15,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1964670438, now seen corresponding path program 1 times [2024-11-17 07:53:15,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:15,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384288165] [2024-11-17 07:53:15,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:15,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:53:15,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:15,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384288165] [2024-11-17 07:53:15,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384288165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:15,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092978358] [2024-11-17 07:53:15,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:15,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:15,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:15,668 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) [2024-11-17 07:53:15,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 07:53:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:15,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 07:53:15,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:15,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:53:15,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:15,997 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:53:15,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092978358] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:15,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:15,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-17 07:53:15,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893418670] [2024-11-17 07:53:15,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:15,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-17 07:53:15,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:15,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-17 07:53:15,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-17 07:53:16,131 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 102 [2024-11-17 07:53:16,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 193 transitions, 1296 flow. Second operand has 19 states, 19 states have (on average 49.21052631578947) internal successors, (935), 19 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:16,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:16,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 102 [2024-11-17 07:53:16,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:17,051 INFO L124 PetriNetUnfolderBase]: 827/2563 cut-off events. [2024-11-17 07:53:17,052 INFO L125 PetriNetUnfolderBase]: For 4368/4368 co-relation queries the response was YES. [2024-11-17 07:53:17,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7102 conditions, 2563 events. 827/2563 cut-off events. For 4368/4368 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 17802 event pairs, 138 based on Foata normal form. 48/2501 useless extension candidates. Maximal degree in co-relation 6648. Up to 619 conditions per place. [2024-11-17 07:53:17,062 INFO L140 encePairwiseOnDemand]: 84/102 looper letters, 296 selfloop transitions, 67 changer transitions 18/421 dead transitions. [2024-11-17 07:53:17,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 421 transitions, 3287 flow [2024-11-17 07:53:17,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-17 07:53:17,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-17 07:53:17,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1096 transitions. [2024-11-17 07:53:17,064 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5655314757481941 [2024-11-17 07:53:17,064 INFO L175 Difference]: Start difference. First operand has 156 places, 193 transitions, 1296 flow. Second operand 19 states and 1096 transitions. [2024-11-17 07:53:17,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 421 transitions, 3287 flow [2024-11-17 07:53:17,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 421 transitions, 3226 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-17 07:53:17,079 INFO L231 Difference]: Finished difference. Result has 175 places, 224 transitions, 1728 flow [2024-11-17 07:53:17,079 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1728, PETRI_PLACES=175, PETRI_TRANSITIONS=224} [2024-11-17 07:53:17,079 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 84 predicate places. [2024-11-17 07:53:17,079 INFO L471 AbstractCegarLoop]: Abstraction has has 175 places, 224 transitions, 1728 flow [2024-11-17 07:53:17,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 49.21052631578947) internal successors, (935), 19 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:17,080 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:17,080 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:17,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-17 07:53:17,280 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,SelfDestructingSolverStorable16 [2024-11-17 07:53:17,281 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:53:17,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:17,282 INFO L85 PathProgramCache]: Analyzing trace with hash 84689003, now seen corresponding path program 1 times [2024-11-17 07:53:17,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:17,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799957415] [2024-11-17 07:53:17,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:17,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:17,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:17,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:17,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799957415] [2024-11-17 07:53:17,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799957415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:53:17,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:53:17,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 07:53:17,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252687716] [2024-11-17 07:53:17,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:53:17,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:53:17,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:17,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:53:17,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:53:17,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 102 [2024-11-17 07:53:17,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 224 transitions, 1728 flow. Second operand has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 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) [2024-11-17 07:53:17,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:17,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 102 [2024-11-17 07:53:17,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:17,919 INFO L124 PetriNetUnfolderBase]: 990/3553 cut-off events. [2024-11-17 07:53:17,919 INFO L125 PetriNetUnfolderBase]: For 9922/9934 co-relation queries the response was YES. [2024-11-17 07:53:17,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10976 conditions, 3553 events. 990/3553 cut-off events. For 9922/9934 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 27779 event pairs, 528 based on Foata normal form. 34/3423 useless extension candidates. Maximal degree in co-relation 10312. Up to 1410 conditions per place. [2024-11-17 07:53:17,936 INFO L140 encePairwiseOnDemand]: 94/102 looper letters, 254 selfloop transitions, 23 changer transitions 1/325 dead transitions. [2024-11-17 07:53:17,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 325 transitions, 3117 flow [2024-11-17 07:53:17,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:53:17,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:53:17,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 411 transitions. [2024-11-17 07:53:17,938 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6715686274509803 [2024-11-17 07:53:17,938 INFO L175 Difference]: Start difference. First operand has 175 places, 224 transitions, 1728 flow. Second operand 6 states and 411 transitions. [2024-11-17 07:53:17,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 325 transitions, 3117 flow [2024-11-17 07:53:17,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 325 transitions, 3033 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-11-17 07:53:17,963 INFO L231 Difference]: Finished difference. Result has 180 places, 232 transitions, 1839 flow [2024-11-17 07:53:17,963 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1698, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1839, PETRI_PLACES=180, PETRI_TRANSITIONS=232} [2024-11-17 07:53:17,964 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 89 predicate places. [2024-11-17 07:53:17,964 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 232 transitions, 1839 flow [2024-11-17 07:53:17,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 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) [2024-11-17 07:53:17,964 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:17,964 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:17,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-17 07:53:17,964 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:53:17,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:17,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1826983649, now seen corresponding path program 1 times [2024-11-17 07:53:17,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:17,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342149712] [2024-11-17 07:53:17,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:17,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-17 07:53:18,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:18,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342149712] [2024-11-17 07:53:18,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342149712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:53:18,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:53:18,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-17 07:53:18,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782726116] [2024-11-17 07:53:18,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:53:18,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:53:18,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:18,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:53:18,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:53:18,181 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 102 [2024-11-17 07:53:18,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 232 transitions, 1839 flow. Second operand has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:18,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:18,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 102 [2024-11-17 07:53:18,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:18,582 INFO L124 PetriNetUnfolderBase]: 960/3454 cut-off events. [2024-11-17 07:53:18,582 INFO L125 PetriNetUnfolderBase]: For 9209/9252 co-relation queries the response was YES. [2024-11-17 07:53:18,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10388 conditions, 3454 events. 960/3454 cut-off events. For 9209/9252 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 27164 event pairs, 545 based on Foata normal form. 2/3223 useless extension candidates. Maximal degree in co-relation 9751. Up to 1655 conditions per place. [2024-11-17 07:53:18,596 INFO L140 encePairwiseOnDemand]: 89/102 looper letters, 228 selfloop transitions, 25 changer transitions 0/300 dead transitions. [2024-11-17 07:53:18,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 300 transitions, 2866 flow [2024-11-17 07:53:18,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 07:53:18,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 07:53:18,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 412 transitions. [2024-11-17 07:53:18,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.673202614379085 [2024-11-17 07:53:18,597 INFO L175 Difference]: Start difference. First operand has 180 places, 232 transitions, 1839 flow. Second operand 6 states and 412 transitions. [2024-11-17 07:53:18,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 300 transitions, 2866 flow [2024-11-17 07:53:18,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 300 transitions, 2857 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:53:18,620 INFO L231 Difference]: Finished difference. Result has 186 places, 233 transitions, 1904 flow [2024-11-17 07:53:18,620 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1818, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1904, PETRI_PLACES=186, PETRI_TRANSITIONS=233} [2024-11-17 07:53:18,620 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 95 predicate places. [2024-11-17 07:53:18,620 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 233 transitions, 1904 flow [2024-11-17 07:53:18,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:18,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:18,621 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:18,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-17 07:53:18,621 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:53:18,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:18,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1669608504, now seen corresponding path program 1 times [2024-11-17 07:53:18,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:18,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063541075] [2024-11-17 07:53:18,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:18,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:18,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:53:18,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:18,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063541075] [2024-11-17 07:53:18,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063541075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:53:18,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:53:18,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:53:18,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10084515] [2024-11-17 07:53:18,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:53:18,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:53:18,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:18,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:53:18,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:53:18,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 102 [2024-11-17 07:53:18,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 233 transitions, 1904 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:18,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:18,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 102 [2024-11-17 07:53:18,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:19,286 INFO L124 PetriNetUnfolderBase]: 1659/4955 cut-off events. [2024-11-17 07:53:19,286 INFO L125 PetriNetUnfolderBase]: For 11458/11484 co-relation queries the response was YES. [2024-11-17 07:53:19,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14009 conditions, 4955 events. 1659/4955 cut-off events. For 11458/11484 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 40206 event pairs, 748 based on Foata normal form. 124/4818 useless extension candidates. Maximal degree in co-relation 13401. Up to 2358 conditions per place. [2024-11-17 07:53:19,306 INFO L140 encePairwiseOnDemand]: 94/102 looper letters, 201 selfloop transitions, 7 changer transitions 0/272 dead transitions. [2024-11-17 07:53:19,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 272 transitions, 2520 flow [2024-11-17 07:53:19,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:53:19,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:53:19,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 282 transitions. [2024-11-17 07:53:19,307 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6911764705882353 [2024-11-17 07:53:19,307 INFO L175 Difference]: Start difference. First operand has 186 places, 233 transitions, 1904 flow. Second operand 4 states and 282 transitions. [2024-11-17 07:53:19,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 272 transitions, 2520 flow [2024-11-17 07:53:19,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 272 transitions, 2474 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 07:53:19,332 INFO L231 Difference]: Finished difference. Result has 187 places, 237 transitions, 1913 flow [2024-11-17 07:53:19,332 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1858, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1913, PETRI_PLACES=187, PETRI_TRANSITIONS=237} [2024-11-17 07:53:19,333 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 96 predicate places. [2024-11-17 07:53:19,333 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 237 transitions, 1913 flow [2024-11-17 07:53:19,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:19,333 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:19,333 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:19,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-17 07:53:19,333 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:53:19,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:19,334 INFO L85 PathProgramCache]: Analyzing trace with hash 748499772, now seen corresponding path program 1 times [2024-11-17 07:53:19,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:19,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780748433] [2024-11-17 07:53:19,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:19,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:19,531 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:53:19,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:19,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780748433] [2024-11-17 07:53:19,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780748433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:19,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129695111] [2024-11-17 07:53:19,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:19,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:19,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:19,533 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) [2024-11-17 07:53:19,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 07:53:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:19,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 07:53:19,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:19,705 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:53:19,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:19,795 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-17 07:53:19,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129695111] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:19,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:19,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-17 07:53:19,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054949819] [2024-11-17 07:53:19,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:19,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-17 07:53:19,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:19,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-17 07:53:19,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-17 07:53:19,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 102 [2024-11-17 07:53:19,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 237 transitions, 1913 flow. Second operand has 20 states, 20 states have (on average 51.4) internal successors, (1028), 20 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:19,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:19,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 102 [2024-11-17 07:53:19,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:20,789 INFO L124 PetriNetUnfolderBase]: 1410/4516 cut-off events. [2024-11-17 07:53:20,789 INFO L125 PetriNetUnfolderBase]: For 11768/11837 co-relation queries the response was YES. [2024-11-17 07:53:20,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13765 conditions, 4516 events. 1410/4516 cut-off events. For 11768/11837 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 37377 event pairs, 906 based on Foata normal form. 2/4282 useless extension candidates. Maximal degree in co-relation 13154. Up to 1233 conditions per place. [2024-11-17 07:53:20,810 INFO L140 encePairwiseOnDemand]: 87/102 looper letters, 91 selfloop transitions, 164 changer transitions 0/300 dead transitions. [2024-11-17 07:53:20,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 300 transitions, 2935 flow [2024-11-17 07:53:20,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-17 07:53:20,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-17 07:53:20,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 893 transitions. [2024-11-17 07:53:20,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5471813725490197 [2024-11-17 07:53:20,814 INFO L175 Difference]: Start difference. First operand has 187 places, 237 transitions, 1913 flow. Second operand 16 states and 893 transitions. [2024-11-17 07:53:20,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 300 transitions, 2935 flow [2024-11-17 07:53:20,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 300 transitions, 2927 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:53:20,838 INFO L231 Difference]: Finished difference. Result has 203 places, 268 transitions, 2631 flow [2024-11-17 07:53:20,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2631, PETRI_PLACES=203, PETRI_TRANSITIONS=268} [2024-11-17 07:53:20,839 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 112 predicate places. [2024-11-17 07:53:20,839 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 268 transitions, 2631 flow [2024-11-17 07:53:20,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.4) internal successors, (1028), 20 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:20,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:20,839 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:20,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-17 07:53:21,040 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,SelfDestructingSolverStorable20 [2024-11-17 07:53:21,040 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:53:21,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:21,041 INFO L85 PathProgramCache]: Analyzing trace with hash -791493679, now seen corresponding path program 1 times [2024-11-17 07:53:21,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:21,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021310103] [2024-11-17 07:53:21,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:21,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:21,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:53:21,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:21,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021310103] [2024-11-17 07:53:21,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021310103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:53:21,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:53:21,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:53:21,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69433676] [2024-11-17 07:53:21,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:53:21,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:53:21,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:21,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:53:21,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:53:21,193 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 102 [2024-11-17 07:53:21,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 268 transitions, 2631 flow. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:21,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:21,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 102 [2024-11-17 07:53:21,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:22,066 INFO L124 PetriNetUnfolderBase]: 2606/6906 cut-off events. [2024-11-17 07:53:22,066 INFO L125 PetriNetUnfolderBase]: For 17316/17486 co-relation queries the response was YES. [2024-11-17 07:53:22,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20418 conditions, 6906 events. 2606/6906 cut-off events. For 17316/17486 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 56887 event pairs, 1250 based on Foata normal form. 0/6468 useless extension candidates. Maximal degree in co-relation 19715. Up to 3376 conditions per place. [2024-11-17 07:53:22,109 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 231 selfloop transitions, 8 changer transitions 0/308 dead transitions. [2024-11-17 07:53:22,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 308 transitions, 3307 flow [2024-11-17 07:53:22,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:53:22,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:53:22,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 275 transitions. [2024-11-17 07:53:22,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6740196078431373 [2024-11-17 07:53:22,111 INFO L175 Difference]: Start difference. First operand has 203 places, 268 transitions, 2631 flow. Second operand 4 states and 275 transitions. [2024-11-17 07:53:22,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 308 transitions, 3307 flow [2024-11-17 07:53:22,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 308 transitions, 3139 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-11-17 07:53:22,154 INFO L231 Difference]: Finished difference. Result has 197 places, 272 transitions, 2516 flow [2024-11-17 07:53:22,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=2463, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2516, PETRI_PLACES=197, PETRI_TRANSITIONS=272} [2024-11-17 07:53:22,155 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 106 predicate places. [2024-11-17 07:53:22,155 INFO L471 AbstractCegarLoop]: Abstraction has has 197 places, 272 transitions, 2516 flow [2024-11-17 07:53:22,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:22,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:22,155 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:22,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-17 07:53:22,155 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:53:22,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:22,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1233500425, now seen corresponding path program 1 times [2024-11-17 07:53:22,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:22,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922527199] [2024-11-17 07:53:22,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:22,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:22,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:53:22,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:22,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922527199] [2024-11-17 07:53:22,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922527199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:53:22,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:53:22,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:53:22,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432226908] [2024-11-17 07:53:22,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:53:22,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:53:22,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:22,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:53:22,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:53:22,455 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 102 [2024-11-17 07:53:22,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 272 transitions, 2516 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:22,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:22,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 102 [2024-11-17 07:53:22,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:23,428 INFO L124 PetriNetUnfolderBase]: 2324/6484 cut-off events. [2024-11-17 07:53:23,429 INFO L125 PetriNetUnfolderBase]: For 16690/16808 co-relation queries the response was YES. [2024-11-17 07:53:23,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19739 conditions, 6484 events. 2324/6484 cut-off events. For 16690/16808 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 54177 event pairs, 1164 based on Foata normal form. 0/6195 useless extension candidates. Maximal degree in co-relation 19062. Up to 3214 conditions per place. [2024-11-17 07:53:23,467 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 227 selfloop transitions, 9 changer transitions 0/307 dead transitions. [2024-11-17 07:53:23,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 307 transitions, 3166 flow [2024-11-17 07:53:23,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:53:23,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:53:23,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 276 transitions. [2024-11-17 07:53:23,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2024-11-17 07:53:23,469 INFO L175 Difference]: Start difference. First operand has 197 places, 272 transitions, 2516 flow. Second operand 4 states and 276 transitions. [2024-11-17 07:53:23,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 307 transitions, 3166 flow [2024-11-17 07:53:23,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 307 transitions, 3159 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:53:23,509 INFO L231 Difference]: Finished difference. Result has 201 places, 274 transitions, 2550 flow [2024-11-17 07:53:23,509 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=2509, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2550, PETRI_PLACES=201, PETRI_TRANSITIONS=274} [2024-11-17 07:53:23,510 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 110 predicate places. [2024-11-17 07:53:23,510 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 274 transitions, 2550 flow [2024-11-17 07:53:23,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:23,510 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:23,510 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:23,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-17 07:53:23,510 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:53:23,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:23,511 INFO L85 PathProgramCache]: Analyzing trace with hash -375395688, now seen corresponding path program 1 times [2024-11-17 07:53:23,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:23,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563322395] [2024-11-17 07:53:23,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:23,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:23,672 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:23,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:23,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563322395] [2024-11-17 07:53:23,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563322395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:23,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473318534] [2024-11-17 07:53:23,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:23,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:23,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:23,677 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) [2024-11-17 07:53:23,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-17 07:53:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:23,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-17 07:53:23,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:23,843 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:23,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:23,975 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:23,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473318534] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:23,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:23,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2024-11-17 07:53:23,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985767183] [2024-11-17 07:53:23,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:23,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-17 07:53:23,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:23,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-17 07:53:23,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2024-11-17 07:53:24,089 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 102 [2024-11-17 07:53:24,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 274 transitions, 2550 flow. Second operand has 28 states, 28 states have (on average 54.25) internal successors, (1519), 28 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:24,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:24,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 102 [2024-11-17 07:53:24,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:25,425 INFO L124 PetriNetUnfolderBase]: 1977/6574 cut-off events. [2024-11-17 07:53:25,425 INFO L125 PetriNetUnfolderBase]: For 31467/31545 co-relation queries the response was YES. [2024-11-17 07:53:25,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22925 conditions, 6574 events. 1977/6574 cut-off events. For 31467/31545 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 56231 event pairs, 1164 based on Foata normal form. 203/6587 useless extension candidates. Maximal degree in co-relation 21671. Up to 3122 conditions per place. [2024-11-17 07:53:25,454 INFO L140 encePairwiseOnDemand]: 89/102 looper letters, 76 selfloop transitions, 269 changer transitions 0/421 dead transitions. [2024-11-17 07:53:25,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 421 transitions, 5151 flow [2024-11-17 07:53:25,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-17 07:53:25,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-17 07:53:25,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1537 transitions. [2024-11-17 07:53:25,457 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5795625942684767 [2024-11-17 07:53:25,457 INFO L175 Difference]: Start difference. First operand has 201 places, 274 transitions, 2550 flow. Second operand 26 states and 1537 transitions. [2024-11-17 07:53:25,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 421 transitions, 5151 flow [2024-11-17 07:53:25,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 421 transitions, 5144 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 07:53:25,514 INFO L231 Difference]: Finished difference. Result has 232 places, 421 transitions, 5116 flow [2024-11-17 07:53:25,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5116, PETRI_PLACES=232, PETRI_TRANSITIONS=421} [2024-11-17 07:53:25,515 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 141 predicate places. [2024-11-17 07:53:25,515 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 421 transitions, 5116 flow [2024-11-17 07:53:25,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 54.25) internal successors, (1519), 28 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:25,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:25,516 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:25,528 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-17 07:53:25,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-17 07:53:25,717 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:53:25,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:25,717 INFO L85 PathProgramCache]: Analyzing trace with hash -416191726, now seen corresponding path program 1 times [2024-11-17 07:53:25,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:25,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533160562] [2024-11-17 07:53:25,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:25,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:25,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:53:25,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:25,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533160562] [2024-11-17 07:53:25,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533160562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:53:25,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:53:25,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 07:53:25,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585665066] [2024-11-17 07:53:25,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:53:25,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 07:53:25,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:25,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 07:53:25,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 07:53:25,811 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 102 [2024-11-17 07:53:25,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 421 transitions, 5116 flow. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:25,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:25,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 102 [2024-11-17 07:53:25,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:27,150 INFO L124 PetriNetUnfolderBase]: 2165/7106 cut-off events. [2024-11-17 07:53:27,150 INFO L125 PetriNetUnfolderBase]: For 38408/38510 co-relation queries the response was YES. [2024-11-17 07:53:27,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25646 conditions, 7106 events. 2165/7106 cut-off events. For 38408/38510 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 60907 event pairs, 992 based on Foata normal form. 136/7114 useless extension candidates. Maximal degree in co-relation 24287. Up to 3541 conditions per place. [2024-11-17 07:53:27,184 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 369 selfloop transitions, 8 changer transitions 0/453 dead transitions. [2024-11-17 07:53:27,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 453 transitions, 6038 flow [2024-11-17 07:53:27,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 07:53:27,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 07:53:27,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 283 transitions. [2024-11-17 07:53:27,185 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6936274509803921 [2024-11-17 07:53:27,185 INFO L175 Difference]: Start difference. First operand has 232 places, 421 transitions, 5116 flow. Second operand 4 states and 283 transitions. [2024-11-17 07:53:27,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 453 transitions, 6038 flow [2024-11-17 07:53:27,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 453 transitions, 5152 flow, removed 306 selfloop flow, removed 13 redundant places. [2024-11-17 07:53:27,284 INFO L231 Difference]: Finished difference. Result has 224 places, 422 transitions, 4263 flow [2024-11-17 07:53:27,285 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=4230, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4263, PETRI_PLACES=224, PETRI_TRANSITIONS=422} [2024-11-17 07:53:27,285 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 133 predicate places. [2024-11-17 07:53:27,285 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 422 transitions, 4263 flow [2024-11-17 07:53:27,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:27,286 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:27,286 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:27,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-17 07:53:27,286 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:53:27,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:27,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1458800040, now seen corresponding path program 1 times [2024-11-17 07:53:27,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:27,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214981031] [2024-11-17 07:53:27,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:27,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:27,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:27,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 07:53:27,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:27,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214981031] [2024-11-17 07:53:27,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214981031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:27,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604442665] [2024-11-17 07:53:27,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:27,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:27,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:27,358 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) [2024-11-17 07:53:27,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-17 07:53:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:27,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 07:53:27,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:27,561 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:27,561 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:27,635 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:27,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604442665] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:27,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:27,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 16 [2024-11-17 07:53:27,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139304508] [2024-11-17 07:53:27,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:27,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-17 07:53:27,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:27,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-17 07:53:27,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-17 07:53:27,960 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 102 [2024-11-17 07:53:27,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 422 transitions, 4263 flow. Second operand has 16 states, 16 states have (on average 51.625) internal successors, (826), 16 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:27,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:27,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 102 [2024-11-17 07:53:27,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:29,823 INFO L124 PetriNetUnfolderBase]: 3487/10508 cut-off events. [2024-11-17 07:53:29,823 INFO L125 PetriNetUnfolderBase]: For 37605/37781 co-relation queries the response was YES. [2024-11-17 07:53:29,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33862 conditions, 10508 events. 3487/10508 cut-off events. For 37605/37781 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 96020 event pairs, 355 based on Foata normal form. 136/10546 useless extension candidates. Maximal degree in co-relation 32512. Up to 1308 conditions per place. [2024-11-17 07:53:29,894 INFO L140 encePairwiseOnDemand]: 90/102 looper letters, 569 selfloop transitions, 80 changer transitions 0/719 dead transitions. [2024-11-17 07:53:29,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 719 transitions, 7891 flow [2024-11-17 07:53:29,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-17 07:53:29,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-17 07:53:29,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 973 transitions. [2024-11-17 07:53:29,898 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5611303344867359 [2024-11-17 07:53:29,899 INFO L175 Difference]: Start difference. First operand has 224 places, 422 transitions, 4263 flow. Second operand 17 states and 973 transitions. [2024-11-17 07:53:29,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 719 transitions, 7891 flow [2024-11-17 07:53:30,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 719 transitions, 7867 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 07:53:30,148 INFO L231 Difference]: Finished difference. Result has 237 places, 432 transitions, 4487 flow [2024-11-17 07:53:30,149 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=4247, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4487, PETRI_PLACES=237, PETRI_TRANSITIONS=432} [2024-11-17 07:53:30,149 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 146 predicate places. [2024-11-17 07:53:30,149 INFO L471 AbstractCegarLoop]: Abstraction has has 237 places, 432 transitions, 4487 flow [2024-11-17 07:53:30,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 51.625) internal successors, (826), 16 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:30,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:30,150 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 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] [2024-11-17 07:53:30,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-17 07:53:30,350 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,SelfDestructingSolverStorable25 [2024-11-17 07:53:30,350 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:53:30,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:30,350 INFO L85 PathProgramCache]: Analyzing trace with hash 886350026, now seen corresponding path program 1 times [2024-11-17 07:53:30,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:30,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137179875] [2024-11-17 07:53:30,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:30,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:30,457 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-17 07:53:30,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:30,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137179875] [2024-11-17 07:53:30,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137179875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:30,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215052963] [2024-11-17 07:53:30,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:30,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:30,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:30,460 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) [2024-11-17 07:53:30,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-17 07:53:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:30,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:53:30,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:30,577 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-17 07:53:30,577 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:30,604 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-17 07:53:30,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215052963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:30,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:30,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:53:30,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859913] [2024-11-17 07:53:30,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:30,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:53:30,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:30,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:53:30,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:53:30,624 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 102 [2024-11-17 07:53:30,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 432 transitions, 4487 flow. Second operand has 12 states, 12 states have (on average 59.0) internal successors, (708), 12 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:30,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:30,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 102 [2024-11-17 07:53:30,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:32,845 INFO L124 PetriNetUnfolderBase]: 4292/12515 cut-off events. [2024-11-17 07:53:32,846 INFO L125 PetriNetUnfolderBase]: For 46574/46676 co-relation queries the response was YES. [2024-11-17 07:53:32,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41169 conditions, 12515 events. 4292/12515 cut-off events. For 46574/46676 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 116523 event pairs, 1227 based on Foata normal form. 306/12766 useless extension candidates. Maximal degree in co-relation 39549. Up to 4482 conditions per place. [2024-11-17 07:53:32,907 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 573 selfloop transitions, 19 changer transitions 0/673 dead transitions. [2024-11-17 07:53:32,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 673 transitions, 7900 flow [2024-11-17 07:53:32,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:53:32,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:53:32,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 709 transitions. [2024-11-17 07:53:32,909 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6950980392156862 [2024-11-17 07:53:32,909 INFO L175 Difference]: Start difference. First operand has 237 places, 432 transitions, 4487 flow. Second operand 10 states and 709 transitions. [2024-11-17 07:53:32,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 673 transitions, 7900 flow [2024-11-17 07:53:32,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 673 transitions, 7558 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-11-17 07:53:32,998 INFO L231 Difference]: Finished difference. Result has 244 places, 441 transitions, 4462 flow [2024-11-17 07:53:32,998 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=4361, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4462, PETRI_PLACES=244, PETRI_TRANSITIONS=441} [2024-11-17 07:53:32,998 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 153 predicate places. [2024-11-17 07:53:32,998 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 441 transitions, 4462 flow [2024-11-17 07:53:32,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 59.0) internal successors, (708), 12 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:32,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:32,999 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:33,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-17 07:53:33,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:33,200 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:53:33,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:33,200 INFO L85 PathProgramCache]: Analyzing trace with hash 477229148, now seen corresponding path program 1 times [2024-11-17 07:53:33,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:33,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572917404] [2024-11-17 07:53:33,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:33,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:33,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:53:33,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:33,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572917404] [2024-11-17 07:53:33,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572917404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 07:53:33,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 07:53:33,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 07:53:33,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667814208] [2024-11-17 07:53:33,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:53:33,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:53:33,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:33,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:53:33,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-17 07:53:33,297 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 102 [2024-11-17 07:53:33,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 441 transitions, 4462 flow. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:33,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:33,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 102 [2024-11-17 07:53:33,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:35,166 INFO L124 PetriNetUnfolderBase]: 4609/13208 cut-off events. [2024-11-17 07:53:35,166 INFO L125 PetriNetUnfolderBase]: For 52208/52419 co-relation queries the response was YES. [2024-11-17 07:53:35,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44925 conditions, 13208 events. 4609/13208 cut-off events. For 52208/52419 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 124205 event pairs, 1894 based on Foata normal form. 208/13310 useless extension candidates. Maximal degree in co-relation 43307. Up to 4988 conditions per place. [2024-11-17 07:53:35,246 INFO L140 encePairwiseOnDemand]: 96/102 looper letters, 469 selfloop transitions, 7 changer transitions 11/560 dead transitions. [2024-11-17 07:53:35,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 560 transitions, 6541 flow [2024-11-17 07:53:35,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:53:35,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:53:35,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 335 transitions. [2024-11-17 07:53:35,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2024-11-17 07:53:35,248 INFO L175 Difference]: Start difference. First operand has 244 places, 441 transitions, 4462 flow. Second operand 5 states and 335 transitions. [2024-11-17 07:53:35,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 560 transitions, 6541 flow [2024-11-17 07:53:35,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 560 transitions, 6490 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-11-17 07:53:35,411 INFO L231 Difference]: Finished difference. Result has 246 places, 439 transitions, 4450 flow [2024-11-17 07:53:35,411 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=4430, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4450, PETRI_PLACES=246, PETRI_TRANSITIONS=439} [2024-11-17 07:53:35,412 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 155 predicate places. [2024-11-17 07:53:35,412 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 439 transitions, 4450 flow [2024-11-17 07:53:35,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:35,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:35,412 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:35,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-17 07:53:35,413 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:53:35,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:35,413 INFO L85 PathProgramCache]: Analyzing trace with hash -912092284, now seen corresponding path program 1 times [2024-11-17 07:53:35,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:35,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251547609] [2024-11-17 07:53:35,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:35,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:35,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 07:53:35,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:35,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251547609] [2024-11-17 07:53:35,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251547609] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:35,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818956083] [2024-11-17 07:53:35,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:35,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:35,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:35,556 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) [2024-11-17 07:53:35,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-17 07:53:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:35,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 07:53:35,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:35,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:35,891 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:35,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818956083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:35,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:35,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-17 07:53:35,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726681959] [2024-11-17 07:53:35,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:35,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-17 07:53:35,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:35,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-17 07:53:35,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-17 07:53:36,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 102 [2024-11-17 07:53:36,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 439 transitions, 4450 flow. Second operand has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:36,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:36,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 102 [2024-11-17 07:53:36,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:41,625 INFO L124 PetriNetUnfolderBase]: 11509/25447 cut-off events. [2024-11-17 07:53:41,625 INFO L125 PetriNetUnfolderBase]: For 81254/81824 co-relation queries the response was YES. [2024-11-17 07:53:41,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87219 conditions, 25447 events. 11509/25447 cut-off events. For 81254/81824 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 226100 event pairs, 3671 based on Foata normal form. 276/25582 useless extension candidates. Maximal degree in co-relation 85305. Up to 5723 conditions per place. [2024-11-17 07:53:41,836 INFO L140 encePairwiseOnDemand]: 83/102 looper letters, 759 selfloop transitions, 186 changer transitions 0/985 dead transitions. [2024-11-17 07:53:41,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 985 transitions, 10711 flow [2024-11-17 07:53:41,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-17 07:53:41,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-17 07:53:41,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1140 transitions. [2024-11-17 07:53:41,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4859335038363171 [2024-11-17 07:53:41,839 INFO L175 Difference]: Start difference. First operand has 246 places, 439 transitions, 4450 flow. Second operand 23 states and 1140 transitions. [2024-11-17 07:53:41,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 985 transitions, 10711 flow [2024-11-17 07:53:42,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 985 transitions, 10687 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-17 07:53:42,102 INFO L231 Difference]: Finished difference. Result has 272 places, 516 transitions, 5914 flow [2024-11-17 07:53:42,102 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=4434, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=5914, PETRI_PLACES=272, PETRI_TRANSITIONS=516} [2024-11-17 07:53:42,103 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 181 predicate places. [2024-11-17 07:53:42,103 INFO L471 AbstractCegarLoop]: Abstraction has has 272 places, 516 transitions, 5914 flow [2024-11-17 07:53:42,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 44.10526315789474) internal successors, (838), 19 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:42,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:42,104 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:42,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-17 07:53:42,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-17 07:53:42,308 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:53:42,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:42,308 INFO L85 PathProgramCache]: Analyzing trace with hash 467833114, now seen corresponding path program 2 times [2024-11-17 07:53:42,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:42,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382535913] [2024-11-17 07:53:42,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:42,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:42,605 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:42,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:42,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382535913] [2024-11-17 07:53:42,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382535913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:42,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582543105] [2024-11-17 07:53:42,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 07:53:42,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:42,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:42,607 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) [2024-11-17 07:53:42,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-17 07:53:42,711 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-17 07:53:42,711 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 07:53:42,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 07:53:42,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:42,776 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-17 07:53:42,777 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:42,832 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-17 07:53:42,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582543105] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:42,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:42,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2024-11-17 07:53:42,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656337694] [2024-11-17 07:53:42,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:42,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-17 07:53:42,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:42,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-17 07:53:42,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-11-17 07:53:42,899 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 102 [2024-11-17 07:53:42,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 516 transitions, 5914 flow. Second operand has 15 states, 15 states have (on average 56.2) internal successors, (843), 15 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:42,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:42,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 102 [2024-11-17 07:53:42,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:46,824 INFO L124 PetriNetUnfolderBase]: 6957/21055 cut-off events. [2024-11-17 07:53:46,825 INFO L125 PetriNetUnfolderBase]: For 95733/96019 co-relation queries the response was YES. [2024-11-17 07:53:46,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75724 conditions, 21055 events. 6957/21055 cut-off events. For 95733/96019 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 212545 event pairs, 4647 based on Foata normal form. 18/20797 useless extension candidates. Maximal degree in co-relation 73697. Up to 10108 conditions per place. [2024-11-17 07:53:47,007 INFO L140 encePairwiseOnDemand]: 95/102 looper letters, 779 selfloop transitions, 209 changer transitions 0/1078 dead transitions. [2024-11-17 07:53:47,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 1078 transitions, 15795 flow [2024-11-17 07:53:47,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-17 07:53:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-17 07:53:47,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 886 transitions. [2024-11-17 07:53:47,016 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5790849673202615 [2024-11-17 07:53:47,016 INFO L175 Difference]: Start difference. First operand has 272 places, 516 transitions, 5914 flow. Second operand 15 states and 886 transitions. [2024-11-17 07:53:47,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 1078 transitions, 15795 flow [2024-11-17 07:53:47,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 1078 transitions, 15611 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-11-17 07:53:47,409 INFO L231 Difference]: Finished difference. Result has 279 places, 554 transitions, 6731 flow [2024-11-17 07:53:47,410 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=5722, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6731, PETRI_PLACES=279, PETRI_TRANSITIONS=554} [2024-11-17 07:53:47,414 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 188 predicate places. [2024-11-17 07:53:47,414 INFO L471 AbstractCegarLoop]: Abstraction has has 279 places, 554 transitions, 6731 flow [2024-11-17 07:53:47,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 56.2) internal successors, (843), 15 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:47,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:47,415 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:47,427 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-17 07:53:47,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:47,616 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:53:47,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:47,616 INFO L85 PathProgramCache]: Analyzing trace with hash 471106877, now seen corresponding path program 1 times [2024-11-17 07:53:47,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:47,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745251867] [2024-11-17 07:53:47,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:47,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:47,709 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-17 07:53:47,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:47,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745251867] [2024-11-17 07:53:47,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745251867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:47,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854545229] [2024-11-17 07:53:47,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:47,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:47,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:47,712 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) [2024-11-17 07:53:47,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-17 07:53:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:47,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-17 07:53:47,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:47,847 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-17 07:53:47,848 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:47,881 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-17 07:53:47,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854545229] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:53:47,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 07:53:47,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-17 07:53:47,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704629000] [2024-11-17 07:53:47,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 07:53:47,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-17 07:53:47,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:47,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-17 07:53:47,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-17 07:53:47,972 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 102 [2024-11-17 07:53:47,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 554 transitions, 6731 flow. Second operand has 12 states, 12 states have (on average 57.583333333333336) internal successors, (691), 12 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:47,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:47,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 102 [2024-11-17 07:53:47,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:53:55,439 INFO L124 PetriNetUnfolderBase]: 14878/39290 cut-off events. [2024-11-17 07:53:55,440 INFO L125 PetriNetUnfolderBase]: For 135678/136300 co-relation queries the response was YES. [2024-11-17 07:53:55,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133390 conditions, 39290 events. 14878/39290 cut-off events. For 135678/136300 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 394930 event pairs, 2656 based on Foata normal form. 414/39643 useless extension candidates. Maximal degree in co-relation 131342. Up to 8373 conditions per place. [2024-11-17 07:53:55,954 INFO L140 encePairwiseOnDemand]: 97/102 looper letters, 701 selfloop transitions, 38 changer transitions 0/826 dead transitions. [2024-11-17 07:53:55,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 826 transitions, 10159 flow [2024-11-17 07:53:55,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 07:53:55,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 07:53:55,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 673 transitions. [2024-11-17 07:53:55,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6598039215686274 [2024-11-17 07:53:55,955 INFO L175 Difference]: Start difference. First operand has 279 places, 554 transitions, 6731 flow. Second operand 10 states and 673 transitions. [2024-11-17 07:53:55,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 826 transitions, 10159 flow [2024-11-17 07:53:56,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 826 transitions, 9598 flow, removed 69 selfloop flow, removed 11 redundant places. [2024-11-17 07:53:56,462 INFO L231 Difference]: Finished difference. Result has 280 places, 575 transitions, 6485 flow [2024-11-17 07:53:56,462 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=6170, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6485, PETRI_PLACES=280, PETRI_TRANSITIONS=575} [2024-11-17 07:53:56,463 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 189 predicate places. [2024-11-17 07:53:56,463 INFO L471 AbstractCegarLoop]: Abstraction has has 280 places, 575 transitions, 6485 flow [2024-11-17 07:53:56,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 57.583333333333336) internal successors, (691), 12 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:56,463 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:53:56,463 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:53:56,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-17 07:53:56,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:56,664 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:53:56,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:53:56,665 INFO L85 PathProgramCache]: Analyzing trace with hash 347342098, now seen corresponding path program 1 times [2024-11-17 07:53:56,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:53:56,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936704688] [2024-11-17 07:53:56,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:56,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:53:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:56,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:56,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:53:56,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936704688] [2024-11-17 07:53:56,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936704688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:56,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994003203] [2024-11-17 07:53:56,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:53:56,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:53:56,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:53:56,752 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) [2024-11-17 07:53:56,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-17 07:53:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:53:56,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:53:56,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:53:56,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:56,898 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:53:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 07:53:56,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994003203] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-17 07:53:56,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-17 07:53:56,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 9 [2024-11-17 07:53:56,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696569624] [2024-11-17 07:53:56,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 07:53:56,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 07:53:56,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:53:56,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 07:53:56,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-17 07:53:56,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 102 [2024-11-17 07:53:56,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 575 transitions, 6485 flow. Second operand has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:53:56,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 07:53:56,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 102 [2024-11-17 07:53:56,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 07:54:04,451 INFO L124 PetriNetUnfolderBase]: 13785/38635 cut-off events. [2024-11-17 07:54:04,451 INFO L125 PetriNetUnfolderBase]: For 138960/139499 co-relation queries the response was YES. [2024-11-17 07:54:04,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132729 conditions, 38635 events. 13785/38635 cut-off events. For 138960/139499 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 396488 event pairs, 6226 based on Foata normal form. 598/39051 useless extension candidates. Maximal degree in co-relation 130606. Up to 12208 conditions per place. [2024-11-17 07:54:04,841 INFO L140 encePairwiseOnDemand]: 91/102 looper letters, 536 selfloop transitions, 89 changer transitions 1/681 dead transitions. [2024-11-17 07:54:04,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 681 transitions, 8724 flow [2024-11-17 07:54:04,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 07:54:04,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 07:54:04,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 344 transitions. [2024-11-17 07:54:04,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6745098039215687 [2024-11-17 07:54:04,843 INFO L175 Difference]: Start difference. First operand has 280 places, 575 transitions, 6485 flow. Second operand 5 states and 344 transitions. [2024-11-17 07:54:04,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 681 transitions, 8724 flow [2024-11-17 07:54:05,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 681 transitions, 8678 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-17 07:54:05,273 INFO L231 Difference]: Finished difference. Result has 285 places, 598 transitions, 7271 flow [2024-11-17 07:54:05,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=102, PETRI_DIFFERENCE_MINUEND_FLOW=6347, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7271, PETRI_PLACES=285, PETRI_TRANSITIONS=598} [2024-11-17 07:54:05,273 INFO L277 CegarLoopForPetriNet]: 91 programPoint places, 194 predicate places. [2024-11-17 07:54:05,274 INFO L471 AbstractCegarLoop]: Abstraction has has 285 places, 598 transitions, 7271 flow [2024-11-17 07:54:05,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 07:54:05,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 07:54:05,274 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 07:54:05,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-17 07:54:05,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:54:05,478 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2024-11-17 07:54:05,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 07:54:05,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1592817804, now seen corresponding path program 1 times [2024-11-17 07:54:05,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 07:54:05,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679725921] [2024-11-17 07:54:05,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:05,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 07:54:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-17 07:54:05,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420023102] [2024-11-17 07:54:05,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 07:54:05,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 07:54:05,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 07:54:05,500 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) [2024-11-17 07:54:05,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-17 07:54:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 07:54:05,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 07:54:05,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 07:54:05,664 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-17 07:54:05,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 07:54:16,810 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-17 07:54:16,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 07:54:16,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679725921] [2024-11-17 07:54:16,811 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-17 07:54:16,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420023102] [2024-11-17 07:54:16,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420023102] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 07:54:16,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-17 07:54:16,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-17 07:54:16,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074264276] [2024-11-17 07:54:16,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-17 07:54:16,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-17 07:54:16,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 07:54:16,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-17 07:54:16,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=44, Unknown=3, NotChecked=0, Total=72 [2024-11-17 07:54:20,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1]