./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/safestack_relacy.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/safestack_relacy.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 23:54:42,035 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 23:54:42,076 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 23:54:42,081 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 23:54:42,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 23:54:42,104 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 23:54:42,107 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 23:54:42,107 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 23:54:42,107 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 23:54:42,108 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 23:54:42,108 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 23:54:42,108 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 23:54:42,108 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 23:54:42,109 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 23:54:42,109 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 23:54:42,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 23:54:42,109 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 23:54:42,109 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 23:54:42,110 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 23:54:42,110 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 23:54:42,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 23:54:42,113 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 23:54:42,113 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 23:54:42,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 23:54:42,113 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 23:54:42,114 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 23:54:42,116 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 23:54:42,116 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 23:54:42,116 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 23:54:42,116 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 23:54:42,117 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 23:54:42,117 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 23:54:42,117 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 23:54:42,117 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 23:54:42,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:54:42,117 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 23:54:42,117 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 23:54:42,118 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 23:54:42,118 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 23:54:42,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 23:54:42,118 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 23:54:42,118 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 23:54:42,118 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 23:54:42,119 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 23:54:42,119 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d61eb304445c3cb39dfadfa4748d680ea5f0f4958f8bc176e8bc3c77c47e674 [2024-10-11 23:54:42,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 23:54:42,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 23:54:42,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 23:54:42,349 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 23:54:42,349 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 23:54:42,350 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/safestack_relacy.i [2024-10-11 23:54:43,556 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 23:54:43,779 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 23:54:43,779 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-complex/safestack_relacy.i [2024-10-11 23:54:43,803 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a75cb4fc6/d4d279808d66419b848d061bddf50450/FLAG5254ced27 [2024-10-11 23:54:43,814 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/a75cb4fc6/d4d279808d66419b848d061bddf50450 [2024-10-11 23:54:43,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 23:54:43,818 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 23:54:43,820 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 23:54:43,820 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 23:54:43,824 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 23:54:43,825 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:54:43" (1/1) ... [2024-10-11 23:54:43,827 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@705a55e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:54:43, skipping insertion in model container [2024-10-11 23:54:43,827 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 11:54:43" (1/1) ... [2024-10-11 23:54:43,869 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 23:54:44,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:54:44,384 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 23:54:44,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 23:54:44,510 INFO L204 MainTranslator]: Completed translation [2024-10-11 23:54:44,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:54:44 WrapperNode [2024-10-11 23:54:44,511 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 23:54:44,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 23:54:44,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 23:54:44,512 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 23:54:44,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:54:44" (1/1) ... [2024-10-11 23:54:44,550 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:54:44" (1/1) ... [2024-10-11 23:54:44,588 INFO L138 Inliner]: procedures = 481, calls = 75, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 304 [2024-10-11 23:54:44,589 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 23:54:44,590 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 23:54:44,590 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 23:54:44,590 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 23:54:44,598 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:54:44" (1/1) ... [2024-10-11 23:54:44,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:54:44" (1/1) ... [2024-10-11 23:54:44,603 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:54:44" (1/1) ... [2024-10-11 23:54:44,617 INFO L175 MemorySlicer]: Split 48 memory accesses to 4 slices as follows [2, 5, 7, 34]. 71 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [2, 3, 2, 8]. The 15 writes are split as follows [0, 1, 2, 12]. [2024-10-11 23:54:44,617 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:54:44" (1/1) ... [2024-10-11 23:54:44,618 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:54:44" (1/1) ... [2024-10-11 23:54:44,632 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:54:44" (1/1) ... [2024-10-11 23:54:44,637 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:54:44" (1/1) ... [2024-10-11 23:54:44,640 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:54:44" (1/1) ... [2024-10-11 23:54:44,642 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:54:44" (1/1) ... [2024-10-11 23:54:44,648 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 23:54:44,649 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 23:54:44,649 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 23:54:44,649 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 23:54:44,650 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:54:44" (1/1) ... [2024-10-11 23:54:44,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 23:54:44,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:54:44,680 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 23:54:44,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 23:54:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-11 23:54:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 23:54:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-11 23:54:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 23:54:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 23:54:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 23:54:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-11 23:54:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 23:54:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2024-10-11 23:54:44,714 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2024-10-11 23:54:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 23:54:44,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 23:54:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 23:54:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 23:54:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 23:54:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 23:54:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-11 23:54:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 23:54:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 23:54:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 23:54:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 23:54:44,716 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 23:54:44,998 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 23:54:44,999 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 23:54:45,327 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 23:54:45,327 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 23:54:45,522 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 23:54:45,522 INFO L314 CfgBuilder]: Removed 7 assume(true) statements. [2024-10-11 23:54:45,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:54:45 BoogieIcfgContainer [2024-10-11 23:54:45,523 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 23:54:45,525 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 23:54:45,525 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 23:54:45,527 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 23:54:45,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 11:54:43" (1/3) ... [2024-10-11 23:54:45,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33cb45f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:54:45, skipping insertion in model container [2024-10-11 23:54:45,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 11:54:44" (2/3) ... [2024-10-11 23:54:45,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33cb45f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 11:54:45, skipping insertion in model container [2024-10-11 23:54:45,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 11:54:45" (3/3) ... [2024-10-11 23:54:45,530 INFO L112 eAbstractionObserver]: Analyzing ICFG safestack_relacy.i [2024-10-11 23:54:45,544 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 23:54:45,544 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-10-11 23:54:45,544 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 23:54:45,620 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-11 23:54:45,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 87 transitions, 181 flow [2024-10-11 23:54:45,680 INFO L124 PetriNetUnfolderBase]: 12/91 cut-off events. [2024-10-11 23:54:45,680 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 23:54:45,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 91 events. 12/91 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 229 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 51. Up to 3 conditions per place. [2024-10-11 23:54:45,684 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 87 transitions, 181 flow [2024-10-11 23:54:45,687 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 86 transitions, 179 flow [2024-10-11 23:54:45,697 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:54:45,702 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;@49e85322, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:54:45,702 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-11 23:54:45,706 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:54:45,706 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-10-11 23:54:45,706 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:54:45,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:54:45,707 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 23:54:45,707 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-11 23:54:45,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:54:45,712 INFO L85 PathProgramCache]: Analyzing trace with hash -913335993, now seen corresponding path program 1 times [2024-10-11 23:54:45,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:54:45,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509503856] [2024-10-11 23:54:45,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:54:45,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:54:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:54:46,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:54:46,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:54:46,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509503856] [2024-10-11 23:54:46,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509503856] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:54:46,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:54:46,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 23:54:46,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622770442] [2024-10-11 23:54:46,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:54:46,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:54:46,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:54:46,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:54:46,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:54:46,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 87 [2024-10-11 23:54:46,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:46,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:54:46,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 87 [2024-10-11 23:54:46,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:54:46,292 INFO L124 PetriNetUnfolderBase]: 223/496 cut-off events. [2024-10-11 23:54:46,292 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 23:54:46,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 496 events. 223/496 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1950 event pairs, 180 based on Foata normal form. 3/366 useless extension candidates. Maximal degree in co-relation 886. Up to 432 conditions per place. [2024-10-11 23:54:46,298 INFO L140 encePairwiseOnDemand]: 77/87 looper letters, 52 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2024-10-11 23:54:46,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 78 transitions, 271 flow [2024-10-11 23:54:46,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:54:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:54:46,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 134 transitions. [2024-10-11 23:54:46,309 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5134099616858238 [2024-10-11 23:54:46,311 INFO L175 Difference]: Start difference. First operand has 78 places, 86 transitions, 179 flow. Second operand 3 states and 134 transitions. [2024-10-11 23:54:46,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 78 transitions, 271 flow [2024-10-11 23:54:46,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 78 transitions, 271 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:54:46,318 INFO L231 Difference]: Finished difference. Result has 76 places, 78 transitions, 167 flow [2024-10-11 23:54:46,321 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=76, PETRI_TRANSITIONS=78} [2024-10-11 23:54:46,323 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2024-10-11 23:54:46,325 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 78 transitions, 167 flow [2024-10-11 23:54:46,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:46,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:54:46,326 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:54:46,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 23:54:46,327 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-11 23:54:46,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:54:46,327 INFO L85 PathProgramCache]: Analyzing trace with hash -573887276, now seen corresponding path program 1 times [2024-10-11 23:54:46,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:54:46,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300024745] [2024-10-11 23:54:46,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:54:46,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:54:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:54:46,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:54:46,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:54:46,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300024745] [2024-10-11 23:54:46,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300024745] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:54:46,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:54:46,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:54:46,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864340670] [2024-10-11 23:54:46,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:54:46,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:54:46,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:54:46,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:54:46,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:54:46,434 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 87 [2024-10-11 23:54:46,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 78 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:46,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:54:46,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 87 [2024-10-11 23:54:46,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:54:46,582 INFO L124 PetriNetUnfolderBase]: 224/512 cut-off events. [2024-10-11 23:54:46,582 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 23:54:46,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 973 conditions, 512 events. 224/512 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2081 event pairs, 180 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 906. Up to 446 conditions per place. [2024-10-11 23:54:46,585 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 60 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2024-10-11 23:54:46,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 85 transitions, 309 flow [2024-10-11 23:54:46,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:54:46,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:54:46,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2024-10-11 23:54:46,589 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5478927203065134 [2024-10-11 23:54:46,590 INFO L175 Difference]: Start difference. First operand has 76 places, 78 transitions, 167 flow. Second operand 3 states and 143 transitions. [2024-10-11 23:54:46,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 85 transitions, 309 flow [2024-10-11 23:54:46,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 85 transitions, 303 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:54:46,593 INFO L231 Difference]: Finished difference. Result has 77 places, 80 transitions, 184 flow [2024-10-11 23:54:46,593 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=77, PETRI_TRANSITIONS=80} [2024-10-11 23:54:46,594 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -1 predicate places. [2024-10-11 23:54:46,594 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 80 transitions, 184 flow [2024-10-11 23:54:46,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:46,594 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:54:46,594 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:54:46,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 23:54:46,595 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-11 23:54:46,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:54:46,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2039049889, now seen corresponding path program 1 times [2024-10-11 23:54:46,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:54:46,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216428383] [2024-10-11 23:54:46,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:54:46,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:54:46,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:54:46,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:54:46,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:54:46,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216428383] [2024-10-11 23:54:46,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216428383] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:54:46,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:54:46,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:54:46,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429466157] [2024-10-11 23:54:46,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:54:46,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:54:46,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:54:46,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:54:46,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:54:46,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 87 [2024-10-11 23:54:46,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 80 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:46,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:54:46,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 87 [2024-10-11 23:54:46,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:54:46,845 INFO L124 PetriNetUnfolderBase]: 224/510 cut-off events. [2024-10-11 23:54:46,845 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 23:54:46,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 510 events. 224/510 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2066 event pairs, 180 based on Foata normal form. 2/380 useless extension candidates. Maximal degree in co-relation 906. Up to 448 conditions per place. [2024-10-11 23:54:46,848 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 61 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2024-10-11 23:54:46,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 85 transitions, 324 flow [2024-10-11 23:54:46,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:54:46,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:54:46,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-10-11 23:54:46,849 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46839080459770116 [2024-10-11 23:54:46,850 INFO L175 Difference]: Start difference. First operand has 77 places, 80 transitions, 184 flow. Second operand 4 states and 163 transitions. [2024-10-11 23:54:46,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 85 transitions, 324 flow [2024-10-11 23:54:46,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 85 transitions, 321 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:54:46,851 INFO L231 Difference]: Finished difference. Result has 81 places, 81 transitions, 202 flow [2024-10-11 23:54:46,851 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=81, PETRI_TRANSITIONS=81} [2024-10-11 23:54:46,852 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2024-10-11 23:54:46,852 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 81 transitions, 202 flow [2024-10-11 23:54:46,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:46,853 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:54:46,853 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:54:46,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 23:54:46,853 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-11 23:54:46,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:54:46,854 INFO L85 PathProgramCache]: Analyzing trace with hash -883999795, now seen corresponding path program 1 times [2024-10-11 23:54:46,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:54:46,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457695057] [2024-10-11 23:54:46,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:54:46,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:54:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:54:46,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:54:46,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:54:46,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457695057] [2024-10-11 23:54:46,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457695057] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:54:46,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:54:46,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:54:46,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266602021] [2024-10-11 23:54:46,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:54:46,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:54:46,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:54:46,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:54:46,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:54:46,965 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 87 [2024-10-11 23:54:46,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 81 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:46,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:54:46,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 87 [2024-10-11 23:54:46,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:54:47,092 INFO L124 PetriNetUnfolderBase]: 223/505 cut-off events. [2024-10-11 23:54:47,092 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-11 23:54:47,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 505 events. 223/505 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1956 event pairs, 180 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 941. Up to 432 conditions per place. [2024-10-11 23:54:47,095 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 57 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2024-10-11 23:54:47,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 321 flow [2024-10-11 23:54:47,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:54:47,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:54:47,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-10-11 23:54:47,097 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41954022988505746 [2024-10-11 23:54:47,097 INFO L175 Difference]: Start difference. First operand has 81 places, 81 transitions, 202 flow. Second operand 4 states and 146 transitions. [2024-10-11 23:54:47,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 321 flow [2024-10-11 23:54:47,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 82 transitions, 315 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-11 23:54:47,101 INFO L231 Difference]: Finished difference. Result has 83 places, 80 transitions, 201 flow [2024-10-11 23:54:47,102 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=201, PETRI_PLACES=83, PETRI_TRANSITIONS=80} [2024-10-11 23:54:47,102 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2024-10-11 23:54:47,103 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 80 transitions, 201 flow [2024-10-11 23:54:47,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:47,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:54:47,104 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:54:47,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 23:54:47,104 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-11 23:54:47,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:54:47,105 INFO L85 PathProgramCache]: Analyzing trace with hash 172316855, now seen corresponding path program 1 times [2024-10-11 23:54:47,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:54:47,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715329583] [2024-10-11 23:54:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:54:47,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:54:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:54:47,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:54:47,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:54:47,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715329583] [2024-10-11 23:54:47,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715329583] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:54:47,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191934858] [2024-10-11 23:54:47,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:54:47,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:54:47,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:54:47,228 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:54:47,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 23:54:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:54:47,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 23:54:47,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:54:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:54:47,366 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:54:47,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191934858] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:54:47,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:54:47,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-11 23:54:47,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700176562] [2024-10-11 23:54:47,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:54:47,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:54:47,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:54:47,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:54:47,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-11 23:54:47,379 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 87 [2024-10-11 23:54:47,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 80 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:47,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:54:47,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 87 [2024-10-11 23:54:47,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:54:47,508 INFO L124 PetriNetUnfolderBase]: 223/503 cut-off events. [2024-10-11 23:54:47,509 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-10-11 23:54:47,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 979 conditions, 503 events. 223/503 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1946 event pairs, 180 based on Foata normal form. 2/375 useless extension candidates. Maximal degree in co-relation 935. Up to 436 conditions per place. [2024-10-11 23:54:47,512 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 53 selfloop transitions, 6 changer transitions 0/78 dead transitions. [2024-10-11 23:54:47,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 78 transitions, 311 flow [2024-10-11 23:54:47,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:54:47,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:54:47,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-10-11 23:54:47,514 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4339080459770115 [2024-10-11 23:54:47,514 INFO L175 Difference]: Start difference. First operand has 83 places, 80 transitions, 201 flow. Second operand 4 states and 151 transitions. [2024-10-11 23:54:47,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 78 transitions, 311 flow [2024-10-11 23:54:47,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 78 transitions, 303 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:54:47,516 INFO L231 Difference]: Finished difference. Result has 81 places, 78 transitions, 197 flow [2024-10-11 23:54:47,516 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=81, PETRI_TRANSITIONS=78} [2024-10-11 23:54:47,516 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2024-10-11 23:54:47,517 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 78 transitions, 197 flow [2024-10-11 23:54:47,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:47,517 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:54:47,517 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:54:47,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 23:54:47,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:54:47,718 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-11 23:54:47,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:54:47,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1046856044, now seen corresponding path program 1 times [2024-10-11 23:54:47,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:54:47,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320335313] [2024-10-11 23:54:47,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:54:47,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:54:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:54:47,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:54:47,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:54:47,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320335313] [2024-10-11 23:54:47,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320335313] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:54:47,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593704011] [2024-10-11 23:54:47,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:54:47,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:54:47,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:54:47,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:54:47,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 23:54:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:54:47,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:54:47,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:54:47,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:54:47,932 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:54:47,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:54:47,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593704011] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:54:47,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:54:47,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-11 23:54:47,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449055334] [2024-10-11 23:54:47,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:54:47,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 23:54:47,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:54:47,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 23:54:47,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 23:54:48,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 87 [2024-10-11 23:54:48,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 78 transitions, 197 flow. Second operand has 10 states, 10 states have (on average 26.1) internal successors, (261), 10 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:48,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:54:48,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 87 [2024-10-11 23:54:48,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:54:48,257 INFO L124 PetriNetUnfolderBase]: 225/527 cut-off events. [2024-10-11 23:54:48,257 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-10-11 23:54:48,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1022 conditions, 527 events. 225/527 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2149 event pairs, 180 based on Foata normal form. 3/400 useless extension candidates. Maximal degree in co-relation 979. Up to 442 conditions per place. [2024-10-11 23:54:48,260 INFO L140 encePairwiseOnDemand]: 80/87 looper letters, 62 selfloop transitions, 9 changer transitions 0/91 dead transitions. [2024-10-11 23:54:48,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 91 transitions, 377 flow [2024-10-11 23:54:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:54:48,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:54:48,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 242 transitions. [2024-10-11 23:54:48,261 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3973727422003284 [2024-10-11 23:54:48,261 INFO L175 Difference]: Start difference. First operand has 81 places, 78 transitions, 197 flow. Second operand 7 states and 242 transitions. [2024-10-11 23:54:48,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 91 transitions, 377 flow [2024-10-11 23:54:48,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 91 transitions, 357 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:54:48,264 INFO L231 Difference]: Finished difference. Result has 88 places, 83 transitions, 243 flow [2024-10-11 23:54:48,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=243, PETRI_PLACES=88, PETRI_TRANSITIONS=83} [2024-10-11 23:54:48,265 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 10 predicate places. [2024-10-11 23:54:48,266 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 83 transitions, 243 flow [2024-10-11 23:54:48,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 26.1) internal successors, (261), 10 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:48,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:54:48,266 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] [2024-10-11 23:54:48,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 23:54:48,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:54:48,468 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-11 23:54:48,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:54:48,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1892252298, now seen corresponding path program 1 times [2024-10-11 23:54:48,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:54:48,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009780102] [2024-10-11 23:54:48,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:54:48,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:54:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:54:48,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 23:54:48,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:54:48,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009780102] [2024-10-11 23:54:48,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009780102] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:54:48,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:54:48,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:54:48,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862102147] [2024-10-11 23:54:48,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:54:48,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:54:48,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:54:48,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:54:48,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:54:48,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 87 [2024-10-11 23:54:48,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:48,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:54:48,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 87 [2024-10-11 23:54:48,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:54:48,664 INFO L124 PetriNetUnfolderBase]: 189/478 cut-off events. [2024-10-11 23:54:48,664 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-10-11 23:54:48,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 478 events. 189/478 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2014 event pairs, 92 based on Foata normal form. 33/425 useless extension candidates. Maximal degree in co-relation 878. Up to 237 conditions per place. [2024-10-11 23:54:48,668 INFO L140 encePairwiseOnDemand]: 79/87 looper letters, 89 selfloop transitions, 5 changer transitions 3/113 dead transitions. [2024-10-11 23:54:48,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 113 transitions, 493 flow [2024-10-11 23:54:48,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:54:48,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:54:48,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 166 transitions. [2024-10-11 23:54:48,669 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6360153256704981 [2024-10-11 23:54:48,669 INFO L175 Difference]: Start difference. First operand has 88 places, 83 transitions, 243 flow. Second operand 3 states and 166 transitions. [2024-10-11 23:54:48,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 113 transitions, 493 flow [2024-10-11 23:54:48,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 113 transitions, 483 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-11 23:54:48,674 INFO L231 Difference]: Finished difference. Result has 83 places, 75 transitions, 224 flow [2024-10-11 23:54:48,675 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=83, PETRI_TRANSITIONS=75} [2024-10-11 23:54:48,675 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2024-10-11 23:54:48,675 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 75 transitions, 224 flow [2024-10-11 23:54:48,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:48,675 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:54:48,675 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] [2024-10-11 23:54:48,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 23:54:48,676 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-11 23:54:48,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:54:48,676 INFO L85 PathProgramCache]: Analyzing trace with hash 643317505, now seen corresponding path program 1 times [2024-10-11 23:54:48,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:54:48,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370692057] [2024-10-11 23:54:48,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:54:48,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:54:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:54:48,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:54:48,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:54:48,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370692057] [2024-10-11 23:54:48,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370692057] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:54:48,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455349090] [2024-10-11 23:54:48,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:54:48,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:54:48,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:54:48,822 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:54:48,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 23:54:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:54:48,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 23:54:48,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:54:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:54:48,971 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:54:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 23:54:49,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455349090] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:54:49,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:54:49,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-10-11 23:54:49,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633414888] [2024-10-11 23:54:49,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:54:49,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 23:54:49,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:54:49,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 23:54:49,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-10-11 23:54:49,069 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 87 [2024-10-11 23:54:49,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 75 transitions, 224 flow. Second operand has 13 states, 13 states have (on average 20.76923076923077) internal successors, (270), 13 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:49,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:54:49,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 87 [2024-10-11 23:54:49,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:54:49,240 INFO L124 PetriNetUnfolderBase]: 188/441 cut-off events. [2024-10-11 23:54:49,241 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2024-10-11 23:54:49,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 939 conditions, 441 events. 188/441 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1581 event pairs, 150 based on Foata normal form. 2/388 useless extension candidates. Maximal degree in co-relation 894. Up to 364 conditions per place. [2024-10-11 23:54:49,243 INFO L140 encePairwiseOnDemand]: 79/87 looper letters, 56 selfloop transitions, 9 changer transitions 0/77 dead transitions. [2024-10-11 23:54:49,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 77 transitions, 348 flow [2024-10-11 23:54:49,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 23:54:49,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 23:54:49,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-10-11 23:54:49,245 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3275862068965517 [2024-10-11 23:54:49,245 INFO L175 Difference]: Start difference. First operand has 83 places, 75 transitions, 224 flow. Second operand 6 states and 171 transitions. [2024-10-11 23:54:49,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 77 transitions, 348 flow [2024-10-11 23:54:49,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 77 transitions, 338 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:54:49,248 INFO L231 Difference]: Finished difference. Result has 83 places, 74 transitions, 233 flow [2024-10-11 23:54:49,248 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=233, PETRI_PLACES=83, PETRI_TRANSITIONS=74} [2024-10-11 23:54:49,249 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2024-10-11 23:54:49,249 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 74 transitions, 233 flow [2024-10-11 23:54:49,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 20.76923076923077) internal successors, (270), 13 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:49,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:54:49,249 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 23:54:49,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-11 23:54:49,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:54:49,450 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-11 23:54:49,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:54:49,450 INFO L85 PathProgramCache]: Analyzing trace with hash -2104797876, now seen corresponding path program 1 times [2024-10-11 23:54:49,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:54:49,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857361809] [2024-10-11 23:54:49,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:54:49,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:54:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:54:49,511 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-11 23:54:49,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:54:49,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857361809] [2024-10-11 23:54:49,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857361809] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:54:49,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:54:49,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:54:49,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771183221] [2024-10-11 23:54:49,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:54:49,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:54:49,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:54:49,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:54:49,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:54:49,536 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 87 [2024-10-11 23:54:49,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 233 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:49,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:54:49,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 87 [2024-10-11 23:54:49,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:54:49,656 INFO L124 PetriNetUnfolderBase]: 188/440 cut-off events. [2024-10-11 23:54:49,656 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-10-11 23:54:49,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915 conditions, 440 events. 188/440 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1574 event pairs, 150 based on Foata normal form. 1/386 useless extension candidates. Maximal degree in co-relation 865. Up to 375 conditions per place. [2024-10-11 23:54:49,658 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 50 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-10-11 23:54:49,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 74 transitions, 349 flow [2024-10-11 23:54:49,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:54:49,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:54:49,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 150 transitions. [2024-10-11 23:54:49,659 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43103448275862066 [2024-10-11 23:54:49,659 INFO L175 Difference]: Start difference. First operand has 83 places, 74 transitions, 233 flow. Second operand 4 states and 150 transitions. [2024-10-11 23:54:49,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 74 transitions, 349 flow [2024-10-11 23:54:49,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 74 transitions, 338 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-11 23:54:49,660 INFO L231 Difference]: Finished difference. Result has 81 places, 74 transitions, 246 flow [2024-10-11 23:54:49,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2024-10-11 23:54:49,661 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2024-10-11 23:54:49,661 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 246 flow [2024-10-11 23:54:49,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:49,661 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:54:49,662 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:54:49,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 23:54:49,662 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2024-10-11 23:54:49,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:54:49,662 INFO L85 PathProgramCache]: Analyzing trace with hash 924928574, now seen corresponding path program 2 times [2024-10-11 23:54:49,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:54:49,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267594628] [2024-10-11 23:54:49,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:54:49,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:54:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:54:49,693 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 23:54:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:54:49,735 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 23:54:49,736 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 23:54:49,737 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-10-11 23:54:49,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2024-10-11 23:54:49,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2024-10-11 23:54:49,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2024-10-11 23:54:49,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2024-10-11 23:54:49,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2024-10-11 23:54:49,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2024-10-11 23:54:49,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2024-10-11 23:54:49,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2024-10-11 23:54:49,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2024-10-11 23:54:49,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2024-10-11 23:54:49,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2024-10-11 23:54:49,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2024-10-11 23:54:49,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2024-10-11 23:54:49,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2024-10-11 23:54:49,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2024-10-11 23:54:49,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2024-10-11 23:54:49,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2024-10-11 23:54:49,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2024-10-11 23:54:49,741 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2024-10-11 23:54:49,741 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2024-10-11 23:54:49,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 23:54:49,741 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:54:49,745 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 23:54:49,745 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 23:54:49,802 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 23:54:49,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 131 transitions, 278 flow [2024-10-11 23:54:49,819 INFO L124 PetriNetUnfolderBase]: 23/158 cut-off events. [2024-10-11 23:54:49,820 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 23:54:49,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 158 events. 23/158 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 563 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 102. Up to 6 conditions per place. [2024-10-11 23:54:49,820 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 131 transitions, 278 flow [2024-10-11 23:54:49,821 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 131 transitions, 278 flow [2024-10-11 23:54:49,822 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:54:49,823 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;@49e85322, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:54:49,825 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-10-11 23:54:49,826 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:54:49,826 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-10-11 23:54:49,826 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:54:49,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:54:49,826 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 23:54:49,826 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-11 23:54:49,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:54:49,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1332870553, now seen corresponding path program 1 times [2024-10-11 23:54:49,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:54:49,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822837084] [2024-10-11 23:54:49,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:54:49,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:54:49,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:54:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:54:49,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:54:49,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822837084] [2024-10-11 23:54:49,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822837084] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:54:49,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:54:49,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 23:54:49,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663189171] [2024-10-11 23:54:49,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:54:49,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:54:49,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:54:49,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:54:49,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:54:49,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 131 [2024-10-11 23:54:49,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 131 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:49,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:54:49,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 131 [2024-10-11 23:54:49,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:54:51,645 INFO L124 PetriNetUnfolderBase]: 15608/23920 cut-off events. [2024-10-11 23:54:51,646 INFO L125 PetriNetUnfolderBase]: For 262/262 co-relation queries the response was YES. [2024-10-11 23:54:51,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46989 conditions, 23920 events. 15608/23920 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 150293 event pairs, 13528 based on Foata normal form. 3/17783 useless extension candidates. Maximal degree in co-relation 38630. Up to 22895 conditions per place. [2024-10-11 23:54:51,767 INFO L140 encePairwiseOnDemand]: 118/131 looper letters, 89 selfloop transitions, 2 changer transitions 0/120 dead transitions. [2024-10-11 23:54:51,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 120 transitions, 438 flow [2024-10-11 23:54:51,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:54:51,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:54:51,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 189 transitions. [2024-10-11 23:54:51,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48091603053435117 [2024-10-11 23:54:51,769 INFO L175 Difference]: Start difference. First operand has 114 places, 131 transitions, 278 flow. Second operand 3 states and 189 transitions. [2024-10-11 23:54:51,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 120 transitions, 438 flow [2024-10-11 23:54:51,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 120 transitions, 438 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 23:54:51,771 INFO L231 Difference]: Finished difference. Result has 112 places, 120 transitions, 260 flow [2024-10-11 23:54:51,772 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=112, PETRI_TRANSITIONS=120} [2024-10-11 23:54:51,772 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -2 predicate places. [2024-10-11 23:54:51,772 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 120 transitions, 260 flow [2024-10-11 23:54:51,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:51,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:54:51,773 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:54:51,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 23:54:51,773 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-11 23:54:51,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:54:51,773 INFO L85 PathProgramCache]: Analyzing trace with hash -573002793, now seen corresponding path program 1 times [2024-10-11 23:54:51,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:54:51,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901084951] [2024-10-11 23:54:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:54:51,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:54:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:54:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:54:51,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:54:51,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901084951] [2024-10-11 23:54:51,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901084951] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:54:51,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:54:51,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:54:51,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675784641] [2024-10-11 23:54:51,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:54:51,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:54:51,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:54:51,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:54:51,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:54:51,822 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 131 [2024-10-11 23:54:51,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 120 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:51,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:54:51,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 131 [2024-10-11 23:54:51,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:54:53,427 INFO L124 PetriNetUnfolderBase]: 15609/23936 cut-off events. [2024-10-11 23:54:53,427 INFO L125 PetriNetUnfolderBase]: For 262/262 co-relation queries the response was YES. [2024-10-11 23:54:53,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47018 conditions, 23936 events. 15609/23936 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 150373 event pairs, 13528 based on Foata normal form. 1/17795 useless extension candidates. Maximal degree in co-relation 46950. Up to 22909 conditions per place. [2024-10-11 23:54:53,630 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 97 selfloop transitions, 3 changer transitions 0/127 dead transitions. [2024-10-11 23:54:53,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 127 transitions, 476 flow [2024-10-11 23:54:53,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:54:53,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:54:53,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2024-10-11 23:54:53,631 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4961832061068702 [2024-10-11 23:54:53,631 INFO L175 Difference]: Start difference. First operand has 112 places, 120 transitions, 260 flow. Second operand 3 states and 195 transitions. [2024-10-11 23:54:53,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 127 transitions, 476 flow [2024-10-11 23:54:53,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 127 transitions, 470 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 23:54:53,633 INFO L231 Difference]: Finished difference. Result has 113 places, 122 transitions, 277 flow [2024-10-11 23:54:53,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=113, PETRI_TRANSITIONS=122} [2024-10-11 23:54:53,634 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, -1 predicate places. [2024-10-11 23:54:53,634 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 122 transitions, 277 flow [2024-10-11 23:54:53,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:53,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:54:53,635 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:54:53,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 23:54:53,635 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-11 23:54:53,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:54:53,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1457046300, now seen corresponding path program 1 times [2024-10-11 23:54:53,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:54:53,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432786634] [2024-10-11 23:54:53,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:54:53,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:54:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:54:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:54:53,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:54:53,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432786634] [2024-10-11 23:54:53,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432786634] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:54:53,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:54:53,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:54:53,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986624494] [2024-10-11 23:54:53,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:54:53,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:54:53,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:54:53,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:54:53,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:54:53,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 131 [2024-10-11 23:54:53,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 122 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:53,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:54:53,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 131 [2024-10-11 23:54:53,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:54:55,333 INFO L124 PetriNetUnfolderBase]: 15609/23934 cut-off events. [2024-10-11 23:54:55,333 INFO L125 PetriNetUnfolderBase]: For 267/267 co-relation queries the response was YES. [2024-10-11 23:54:55,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47025 conditions, 23934 events. 15609/23934 cut-off events. For 267/267 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 150335 event pairs, 13528 based on Foata normal form. 2/17797 useless extension candidates. Maximal degree in co-relation 46950. Up to 22911 conditions per place. [2024-10-11 23:54:55,425 INFO L140 encePairwiseOnDemand]: 125/131 looper letters, 98 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2024-10-11 23:54:55,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 127 transitions, 491 flow [2024-10-11 23:54:55,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:54:55,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:54:55,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 220 transitions. [2024-10-11 23:54:55,427 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4198473282442748 [2024-10-11 23:54:55,427 INFO L175 Difference]: Start difference. First operand has 113 places, 122 transitions, 277 flow. Second operand 4 states and 220 transitions. [2024-10-11 23:54:55,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 127 transitions, 491 flow [2024-10-11 23:54:55,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 127 transitions, 488 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:54:55,430 INFO L231 Difference]: Finished difference. Result has 117 places, 123 transitions, 295 flow [2024-10-11 23:54:55,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=117, PETRI_TRANSITIONS=123} [2024-10-11 23:54:55,430 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 3 predicate places. [2024-10-11 23:54:55,430 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 123 transitions, 295 flow [2024-10-11 23:54:55,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:55,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:54:55,431 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:54:55,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 23:54:55,431 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-11 23:54:55,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:54:55,432 INFO L85 PathProgramCache]: Analyzing trace with hash -128467849, now seen corresponding path program 1 times [2024-10-11 23:54:55,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:54:55,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202508605] [2024-10-11 23:54:55,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:54:55,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:54:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:54:55,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:54:55,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:54:55,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202508605] [2024-10-11 23:54:55,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202508605] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:54:55,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:54:55,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:54:55,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640008599] [2024-10-11 23:54:55,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:54:55,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:54:55,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:54:55,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:54:55,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:54:55,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 131 [2024-10-11 23:54:55,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 123 transitions, 295 flow. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:55,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:54:55,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 131 [2024-10-11 23:54:55,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:54:57,554 INFO L124 PetriNetUnfolderBase]: 15608/23929 cut-off events. [2024-10-11 23:54:57,555 INFO L125 PetriNetUnfolderBase]: For 272/272 co-relation queries the response was YES. [2024-10-11 23:54:57,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47023 conditions, 23929 events. 15608/23929 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 150173 event pairs, 13528 based on Foata normal form. 1/17793 useless extension candidates. Maximal degree in co-relation 46985. Up to 22895 conditions per place. [2024-10-11 23:54:57,649 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 94 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2024-10-11 23:54:57,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 124 transitions, 488 flow [2024-10-11 23:54:57,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:54:57,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:54:57,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 203 transitions. [2024-10-11 23:54:57,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38740458015267176 [2024-10-11 23:54:57,651 INFO L175 Difference]: Start difference. First operand has 117 places, 123 transitions, 295 flow. Second operand 4 states and 203 transitions. [2024-10-11 23:54:57,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 124 transitions, 488 flow [2024-10-11 23:54:57,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 124 transitions, 482 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-11 23:54:57,653 INFO L231 Difference]: Finished difference. Result has 119 places, 122 transitions, 294 flow [2024-10-11 23:54:57,653 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=119, PETRI_TRANSITIONS=122} [2024-10-11 23:54:57,654 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 5 predicate places. [2024-10-11 23:54:57,654 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 122 transitions, 294 flow [2024-10-11 23:54:57,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:57,654 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:54:57,654 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:54:57,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 23:54:57,655 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-11 23:54:57,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:54:57,655 INFO L85 PathProgramCache]: Analyzing trace with hash 350260247, now seen corresponding path program 1 times [2024-10-11 23:54:57,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:54:57,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914714072] [2024-10-11 23:54:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:54:57,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:54:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:54:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:54:57,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:54:57,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914714072] [2024-10-11 23:54:57,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914714072] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:54:57,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755365624] [2024-10-11 23:54:57,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:54:57,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:54:57,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:54:57,729 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:54:57,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 23:54:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:54:57,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 23:54:57,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:54:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:54:57,835 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 23:54:57,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755365624] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:54:57,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 23:54:57,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-10-11 23:54:57,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222891760] [2024-10-11 23:54:57,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:54:57,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:54:57,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:54:57,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:54:57,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-11 23:54:57,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 131 [2024-10-11 23:54:57,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 122 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:57,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:54:57,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 131 [2024-10-11 23:54:57,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:54:59,702 INFO L124 PetriNetUnfolderBase]: 15608/23927 cut-off events. [2024-10-11 23:54:59,702 INFO L125 PetriNetUnfolderBase]: For 272/272 co-relation queries the response was YES. [2024-10-11 23:54:59,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47024 conditions, 23927 events. 15608/23927 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 150295 event pairs, 13528 based on Foata normal form. 2/17792 useless extension candidates. Maximal degree in co-relation 46979. Up to 22899 conditions per place. [2024-10-11 23:54:59,818 INFO L140 encePairwiseOnDemand]: 125/131 looper letters, 90 selfloop transitions, 6 changer transitions 0/120 dead transitions. [2024-10-11 23:54:59,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 120 transitions, 478 flow [2024-10-11 23:54:59,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:54:59,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:54:59,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 208 transitions. [2024-10-11 23:54:59,820 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3969465648854962 [2024-10-11 23:54:59,820 INFO L175 Difference]: Start difference. First operand has 119 places, 122 transitions, 294 flow. Second operand 4 states and 208 transitions. [2024-10-11 23:54:59,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 120 transitions, 478 flow [2024-10-11 23:54:59,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 120 transitions, 470 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:54:59,823 INFO L231 Difference]: Finished difference. Result has 117 places, 120 transitions, 290 flow [2024-10-11 23:54:59,823 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=117, PETRI_TRANSITIONS=120} [2024-10-11 23:54:59,823 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 3 predicate places. [2024-10-11 23:54:59,823 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 120 transitions, 290 flow [2024-10-11 23:54:59,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:54:59,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:54:59,824 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:54:59,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 23:55:00,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-11 23:55:00,025 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-11 23:55:00,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:00,025 INFO L85 PathProgramCache]: Analyzing trace with hash -2026833265, now seen corresponding path program 1 times [2024-10-11 23:55:00,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:00,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859352863] [2024-10-11 23:55:00,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:00,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:00,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:00,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:00,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859352863] [2024-10-11 23:55:00,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859352863] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:55:00,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721884333] [2024-10-11 23:55:00,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:00,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:55:00,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:55:00,240 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:55:00,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 23:55:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:00,340 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:55:00,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:55:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:00,370 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:55:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:00,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721884333] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:55:00,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:55:00,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-11 23:55:00,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228420497] [2024-10-11 23:55:00,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:55:00,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 23:55:00,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:00,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 23:55:00,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 23:55:00,432 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 131 [2024-10-11 23:55:00,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 120 transitions, 290 flow. Second operand has 10 states, 10 states have (on average 31.1) internal successors, (311), 10 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:55:00,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:00,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 131 [2024-10-11 23:55:00,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:02,156 INFO L124 PetriNetUnfolderBase]: 15610/23951 cut-off events. [2024-10-11 23:55:02,156 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2024-10-11 23:55:02,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47067 conditions, 23951 events. 15610/23951 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 150510 event pairs, 13528 based on Foata normal form. 3/17817 useless extension candidates. Maximal degree in co-relation 47023. Up to 22905 conditions per place. [2024-10-11 23:55:02,257 INFO L140 encePairwiseOnDemand]: 124/131 looper letters, 99 selfloop transitions, 9 changer transitions 0/133 dead transitions. [2024-10-11 23:55:02,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 133 transitions, 544 flow [2024-10-11 23:55:02,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 23:55:02,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-11 23:55:02,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 314 transitions. [2024-10-11 23:55:02,260 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34242093784078514 [2024-10-11 23:55:02,260 INFO L175 Difference]: Start difference. First operand has 117 places, 120 transitions, 290 flow. Second operand 7 states and 314 transitions. [2024-10-11 23:55:02,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 133 transitions, 544 flow [2024-10-11 23:55:02,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 133 transitions, 524 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 23:55:02,263 INFO L231 Difference]: Finished difference. Result has 124 places, 125 transitions, 336 flow [2024-10-11 23:55:02,264 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=336, PETRI_PLACES=124, PETRI_TRANSITIONS=125} [2024-10-11 23:55:02,264 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 10 predicate places. [2024-10-11 23:55:02,264 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 125 transitions, 336 flow [2024-10-11 23:55:02,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 31.1) internal successors, (311), 10 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:55:02,265 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:02,265 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] [2024-10-11 23:55:02,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 23:55:02,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-11 23:55:02,466 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-11 23:55:02,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:02,466 INFO L85 PathProgramCache]: Analyzing trace with hash 452924471, now seen corresponding path program 1 times [2024-10-11 23:55:02,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:02,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773330646] [2024-10-11 23:55:02,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:02,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 23:55:02,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:02,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773330646] [2024-10-11 23:55:02,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773330646] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:55:02,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:55:02,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:55:02,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105168329] [2024-10-11 23:55:02,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:55:02,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:55:02,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:02,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:55:02,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:55:02,536 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 131 [2024-10-11 23:55:02,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 125 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:55:02,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:02,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 131 [2024-10-11 23:55:02,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:04,484 INFO L124 PetriNetUnfolderBase]: 17842/27478 cut-off events. [2024-10-11 23:55:04,485 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2024-10-11 23:55:04,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53615 conditions, 27478 events. 17842/27478 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 185668 event pairs, 7605 based on Foata normal form. 98/20914 useless extension candidates. Maximal degree in co-relation 53566. Up to 19004 conditions per place. [2024-10-11 23:55:04,590 INFO L140 encePairwiseOnDemand]: 122/131 looper letters, 170 selfloop transitions, 6 changer transitions 1/200 dead transitions. [2024-10-11 23:55:04,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 200 transitions, 846 flow [2024-10-11 23:55:04,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:55:04,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:55:04,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2024-10-11 23:55:04,592 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6692111959287532 [2024-10-11 23:55:04,592 INFO L175 Difference]: Start difference. First operand has 124 places, 125 transitions, 336 flow. Second operand 3 states and 263 transitions. [2024-10-11 23:55:04,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 200 transitions, 846 flow [2024-10-11 23:55:04,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 200 transitions, 836 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-11 23:55:04,597 INFO L231 Difference]: Finished difference. Result has 125 places, 126 transitions, 358 flow [2024-10-11 23:55:04,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=125, PETRI_TRANSITIONS=126} [2024-10-11 23:55:04,598 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 11 predicate places. [2024-10-11 23:55:04,598 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 126 transitions, 358 flow [2024-10-11 23:55:04,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:55:04,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:04,598 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] [2024-10-11 23:55:04,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 23:55:04,599 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-11 23:55:04,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:04,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1538161035, now seen corresponding path program 1 times [2024-10-11 23:55:04,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:04,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442661936] [2024-10-11 23:55:04,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:04,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:04,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-11 23:55:04,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:04,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442661936] [2024-10-11 23:55:04,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442661936] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:55:04,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956070236] [2024-10-11 23:55:04,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:04,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:55:04,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:55:04,677 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:55:04,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 23:55:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:04,786 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 23:55:04,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:55:04,854 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 23:55:04,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:55:05,033 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 23:55:05,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956070236] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:55:05,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:55:05,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2024-10-11 23:55:05,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247673813] [2024-10-11 23:55:05,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:55:05,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 23:55:05,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:05,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 23:55:05,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-10-11 23:55:05,125 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 131 [2024-10-11 23:55:05,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 126 transitions, 358 flow. Second operand has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:55:05,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:05,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 131 [2024-10-11 23:55:05,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:07,540 INFO L124 PetriNetUnfolderBase]: 15548/24059 cut-off events. [2024-10-11 23:55:07,540 INFO L125 PetriNetUnfolderBase]: For 5376/5376 co-relation queries the response was YES. [2024-10-11 23:55:07,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50333 conditions, 24059 events. 15548/24059 cut-off events. For 5376/5376 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 161819 event pairs, 6519 based on Foata normal form. 1029/20096 useless extension candidates. Maximal degree in co-relation 50282. Up to 15604 conditions per place. [2024-10-11 23:55:07,615 INFO L140 encePairwiseOnDemand]: 118/131 looper letters, 236 selfloop transitions, 13 changer transitions 2/270 dead transitions. [2024-10-11 23:55:07,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 270 transitions, 1147 flow [2024-10-11 23:55:07,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 23:55:07,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 23:55:07,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 423 transitions. [2024-10-11 23:55:07,617 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35877862595419846 [2024-10-11 23:55:07,617 INFO L175 Difference]: Start difference. First operand has 125 places, 126 transitions, 358 flow. Second operand 9 states and 423 transitions. [2024-10-11 23:55:07,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 270 transitions, 1147 flow [2024-10-11 23:55:07,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 270 transitions, 1142 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 23:55:07,622 INFO L231 Difference]: Finished difference. Result has 132 places, 124 transitions, 377 flow [2024-10-11 23:55:07,622 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=377, PETRI_PLACES=132, PETRI_TRANSITIONS=124} [2024-10-11 23:55:07,623 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 18 predicate places. [2024-10-11 23:55:07,623 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 124 transitions, 377 flow [2024-10-11 23:55:07,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.454545454545453) internal successors, (258), 11 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:55:07,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:07,623 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 23:55:07,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 23:55:07,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-11 23:55:07,824 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-11 23:55:07,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:07,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1904927924, now seen corresponding path program 1 times [2024-10-11 23:55:07,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:07,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145161918] [2024-10-11 23:55:07,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:07,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:07,885 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-11 23:55:07,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:07,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145161918] [2024-10-11 23:55:07,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145161918] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:55:07,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:55:07,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 23:55:07,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648680299] [2024-10-11 23:55:07,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:55:07,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 23:55:07,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:07,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 23:55:07,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 23:55:07,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 131 [2024-10-11 23:55:07,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 124 transitions, 377 flow. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:55:07,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:07,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 131 [2024-10-11 23:55:07,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:09,294 INFO L124 PetriNetUnfolderBase]: 13331/20559 cut-off events. [2024-10-11 23:55:09,294 INFO L125 PetriNetUnfolderBase]: For 5000/6037 co-relation queries the response was YES. [2024-10-11 23:55:09,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44056 conditions, 20559 events. 13331/20559 cut-off events. For 5000/6037 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 127952 event pairs, 11565 based on Foata normal form. 1/17184 useless extension candidates. Maximal degree in co-relation 44002. Up to 19715 conditions per place. [2024-10-11 23:55:09,388 INFO L140 encePairwiseOnDemand]: 126/131 looper letters, 91 selfloop transitions, 9 changer transitions 0/124 dead transitions. [2024-10-11 23:55:09,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 124 transitions, 575 flow [2024-10-11 23:55:09,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:55:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:55:09,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 210 transitions. [2024-10-11 23:55:09,389 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40076335877862596 [2024-10-11 23:55:09,389 INFO L175 Difference]: Start difference. First operand has 132 places, 124 transitions, 377 flow. Second operand 4 states and 210 transitions. [2024-10-11 23:55:09,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 124 transitions, 575 flow [2024-10-11 23:55:09,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 124 transitions, 558 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-11 23:55:09,392 INFO L231 Difference]: Finished difference. Result has 128 places, 124 transitions, 384 flow [2024-10-11 23:55:09,393 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=384, PETRI_PLACES=128, PETRI_TRANSITIONS=124} [2024-10-11 23:55:09,393 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 14 predicate places. [2024-10-11 23:55:09,393 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 384 flow [2024-10-11 23:55:09,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:55:09,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:09,394 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-10-11 23:55:09,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 23:55:09,394 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-11 23:55:09,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:09,394 INFO L85 PathProgramCache]: Analyzing trace with hash 11485839, now seen corresponding path program 2 times [2024-10-11 23:55:09,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:09,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751954087] [2024-10-11 23:55:09,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:09,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:09,486 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 23:55:09,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:09,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751954087] [2024-10-11 23:55:09,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751954087] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 23:55:09,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632885466] [2024-10-11 23:55:09,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 23:55:09,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:55:09,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 23:55:09,490 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 23:55:09,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 23:55:09,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 23:55:09,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 23:55:09,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 23:55:09,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 23:55:09,615 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 23:55:09,616 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 23:55:09,655 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-11 23:55:09,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632885466] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 23:55:09,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 23:55:09,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-10-11 23:55:09,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970859473] [2024-10-11 23:55:09,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 23:55:09,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 23:55:09,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:09,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 23:55:09,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-10-11 23:55:09,679 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 131 [2024-10-11 23:55:09,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 384 flow. Second operand has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:55:09,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:09,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 131 [2024-10-11 23:55:09,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:11,213 INFO L124 PetriNetUnfolderBase]: 13331/20558 cut-off events. [2024-10-11 23:55:11,213 INFO L125 PetriNetUnfolderBase]: For 4840/5877 co-relation queries the response was YES. [2024-10-11 23:55:11,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42920 conditions, 20558 events. 13331/20558 cut-off events. For 4840/5877 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 127909 event pairs, 11565 based on Foata normal form. 1/17183 useless extension candidates. Maximal degree in co-relation 42865. Up to 19703 conditions per place. [2024-10-11 23:55:11,286 INFO L140 encePairwiseOnDemand]: 125/131 looper letters, 96 selfloop transitions, 9 changer transitions 0/125 dead transitions. [2024-10-11 23:55:11,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 125 transitions, 592 flow [2024-10-11 23:55:11,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 23:55:11,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 23:55:11,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 193 transitions. [2024-10-11 23:55:11,288 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3683206106870229 [2024-10-11 23:55:11,288 INFO L175 Difference]: Start difference. First operand has 128 places, 124 transitions, 384 flow. Second operand 4 states and 193 transitions. [2024-10-11 23:55:11,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 125 transitions, 592 flow [2024-10-11 23:55:11,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 125 transitions, 572 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-11 23:55:11,291 INFO L231 Difference]: Finished difference. Result has 127 places, 124 transitions, 389 flow [2024-10-11 23:55:11,291 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=389, PETRI_PLACES=127, PETRI_TRANSITIONS=124} [2024-10-11 23:55:11,291 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 13 predicate places. [2024-10-11 23:55:11,291 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 124 transitions, 389 flow [2024-10-11 23:55:11,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.428571428571427) internal successors, (206), 7 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:55:11,292 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:11,292 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:55:11,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 23:55:11,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 23:55:11,493 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-11 23:55:11,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:11,493 INFO L85 PathProgramCache]: Analyzing trace with hash 2456664, now seen corresponding path program 1 times [2024-10-11 23:55:11,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:11,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254681184] [2024-10-11 23:55:11,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:11,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-10-11 23:55:11,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:11,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254681184] [2024-10-11 23:55:11,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254681184] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:55:11,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:55:11,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 23:55:11,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672322244] [2024-10-11 23:55:11,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:55:11,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:55:11,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:11,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:55:11,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:55:11,565 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 131 [2024-10-11 23:55:11,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 124 transitions, 389 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:55:11,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:11,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 131 [2024-10-11 23:55:11,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 23:55:13,283 INFO L124 PetriNetUnfolderBase]: 13376/20597 cut-off events. [2024-10-11 23:55:13,283 INFO L125 PetriNetUnfolderBase]: For 1662/1662 co-relation queries the response was YES. [2024-10-11 23:55:13,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43093 conditions, 20597 events. 13376/20597 cut-off events. For 1662/1662 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 125771 event pairs, 9346 based on Foata normal form. 1/17238 useless extension candidates. Maximal degree in co-relation 43007. Up to 16113 conditions per place. [2024-10-11 23:55:13,383 INFO L140 encePairwiseOnDemand]: 123/131 looper letters, 161 selfloop transitions, 8 changer transitions 0/192 dead transitions. [2024-10-11 23:55:13,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 192 transitions, 859 flow [2024-10-11 23:55:13,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 23:55:13,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 23:55:13,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 250 transitions. [2024-10-11 23:55:13,384 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6361323155216285 [2024-10-11 23:55:13,384 INFO L175 Difference]: Start difference. First operand has 127 places, 124 transitions, 389 flow. Second operand 3 states and 250 transitions. [2024-10-11 23:55:13,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 192 transitions, 859 flow [2024-10-11 23:55:13,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 192 transitions, 848 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-11 23:55:13,400 INFO L231 Difference]: Finished difference. Result has 126 places, 124 transitions, 402 flow [2024-10-11 23:55:13,400 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=126, PETRI_TRANSITIONS=124} [2024-10-11 23:55:13,401 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 12 predicate places. [2024-10-11 23:55:13,401 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 124 transitions, 402 flow [2024-10-11 23:55:13,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:55:13,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:13,401 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:55:13,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-11 23:55:13,401 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2024-10-11 23:55:13,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:13,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1934081085, now seen corresponding path program 1 times [2024-10-11 23:55:13,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:13,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925821635] [2024-10-11 23:55:13,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:13,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:55:13,425 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 23:55:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 23:55:13,446 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 23:55:13,448 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 23:55:13,448 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2024-10-11 23:55:13,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2024-10-11 23:55:13,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2024-10-11 23:55:13,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2024-10-11 23:55:13,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2024-10-11 23:55:13,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2024-10-11 23:55:13,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2024-10-11 23:55:13,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2024-10-11 23:55:13,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2024-10-11 23:55:13,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2024-10-11 23:55:13,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2024-10-11 23:55:13,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2024-10-11 23:55:13,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2024-10-11 23:55:13,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2024-10-11 23:55:13,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2024-10-11 23:55:13,450 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2024-10-11 23:55:13,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2024-10-11 23:55:13,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2024-10-11 23:55:13,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2024-10-11 23:55:13,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2024-10-11 23:55:13,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2024-10-11 23:55:13,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2024-10-11 23:55:13,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2024-10-11 23:55:13,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2024-10-11 23:55:13,451 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2024-10-11 23:55:13,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 23:55:13,452 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 23:55:13,452 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 23:55:13,452 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 23:55:13,504 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 23:55:13,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 175 transitions, 377 flow [2024-10-11 23:55:13,522 INFO L124 PetriNetUnfolderBase]: 37/244 cut-off events. [2024-10-11 23:55:13,522 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-11 23:55:13,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 244 events. 37/244 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 970 event pairs, 1 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 166. Up to 12 conditions per place. [2024-10-11 23:55:13,523 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 175 transitions, 377 flow [2024-10-11 23:55:13,524 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 175 transitions, 377 flow [2024-10-11 23:55:13,527 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 23:55:13,527 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;@49e85322, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 23:55:13,527 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-10-11 23:55:13,528 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 23:55:13,528 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-10-11 23:55:13,528 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 23:55:13,528 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 23:55:13,528 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 23:55:13,528 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2024-10-11 23:55:13,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 23:55:13,529 INFO L85 PathProgramCache]: Analyzing trace with hash -450733049, now seen corresponding path program 1 times [2024-10-11 23:55:13,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 23:55:13,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116729197] [2024-10-11 23:55:13,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 23:55:13,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 23:55:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 23:55:13,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 23:55:13,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 23:55:13,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116729197] [2024-10-11 23:55:13,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116729197] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 23:55:13,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 23:55:13,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 23:55:13,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066832272] [2024-10-11 23:55:13,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 23:55:13,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 23:55:13,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 23:55:13,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 23:55:13,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 23:55:13,569 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 175 [2024-10-11 23:55:13,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 175 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 23:55:13,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 23:55:13,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 175 [2024-10-11 23:55:13,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand