./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c --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/weaver/popl20-bad-dot-product.wvr.c -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 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:05:13,767 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:05:13,824 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:05:13,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:05:13,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:05:13,860 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:05:13,861 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:05:13,861 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:05:13,862 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:05:13,863 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:05:13,864 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:05:13,865 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:05:13,866 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:05:13,868 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:05:13,868 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:05:13,869 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:05:13,869 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:05:13,869 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:05:13,870 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:05:13,870 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:05:13,874 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:05:13,877 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:05:13,877 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:05:13,877 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:05:13,877 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:05:13,878 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:05:13,878 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:05:13,878 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:05:13,878 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:05:13,879 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:05:13,879 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:05:13,879 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:05:13,880 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:05:13,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:05:13,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:05:13,880 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:05:13,880 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:05:13,881 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:05:13,881 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:05:13,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:05:13,881 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:05:13,882 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:05:13,883 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:05:13,883 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:05:13,883 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e90898aa78f5642c5c7d6f9df6b2e15e069a046a9465d5d61576c4b07f46b8 [2024-10-12 00:05:14,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:05:14,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:05:14,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:05:14,250 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:05:14,251 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:05:14,253 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-10-12 00:05:15,946 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:05:16,169 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:05:16,170 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-dot-product.wvr.c [2024-10-12 00:05:16,179 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/4b1e49153/c1c75f5d016a4740862cfe3fd1413ec8/FLAGfba9dcedf [2024-10-12 00:05:16,544 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/4b1e49153/c1c75f5d016a4740862cfe3fd1413ec8 [2024-10-12 00:05:16,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:05:16,548 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:05:16,550 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:05:16,550 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:05:16,556 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:05:16,557 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:05:16" (1/1) ... [2024-10-12 00:05:16,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61359d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:16, skipping insertion in model container [2024-10-12 00:05:16,558 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:05:16" (1/1) ... [2024-10-12 00:05:16,587 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:05:16,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:05:16,829 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:05:16,905 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:05:16,953 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:05:16,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:16 WrapperNode [2024-10-12 00:05:16,954 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:05:16,955 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:05:16,955 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:05:16,955 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:05:16,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:16" (1/1) ... [2024-10-12 00:05:16,972 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:16" (1/1) ... [2024-10-12 00:05:17,008 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 23, statements flattened = 332 [2024-10-12 00:05:17,009 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:05:17,009 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:05:17,010 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:05:17,010 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:05:17,021 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:16" (1/1) ... [2024-10-12 00:05:17,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:16" (1/1) ... [2024-10-12 00:05:17,025 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:16" (1/1) ... [2024-10-12 00:05:17,074 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-10-12 00:05:17,074 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:16" (1/1) ... [2024-10-12 00:05:17,074 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:16" (1/1) ... [2024-10-12 00:05:17,083 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:16" (1/1) ... [2024-10-12 00:05:17,089 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:16" (1/1) ... [2024-10-12 00:05:17,091 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:16" (1/1) ... [2024-10-12 00:05:17,093 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:16" (1/1) ... [2024-10-12 00:05:17,097 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:05:17,098 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:05:17,099 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:05:17,099 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:05:17,100 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:16" (1/1) ... [2024-10-12 00:05:17,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:05:17,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:17,147 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) [2024-10-12 00:05:17,150 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 [2024-10-12 00:05:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:05:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:05:17,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:05:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:05:17,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:05:17,208 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-12 00:05:17,208 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-12 00:05:17,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:05:17,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 00:05:17,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 00:05:17,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 00:05:17,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:05:17,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:05:17,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-12 00:05:17,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:05:17,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:05:17,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 00:05:17,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 00:05:17,214 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:05:17,422 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:05:17,426 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:05:18,015 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:05:18,015 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:05:18,633 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:05:18,633 INFO L314 CfgBuilder]: Removed 8 assume(true) statements. [2024-10-12 00:05:18,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:05:18 BoogieIcfgContainer [2024-10-12 00:05:18,634 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:05:18,639 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:05:18,639 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:05:18,644 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:05:18,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:05:16" (1/3) ... [2024-10-12 00:05:18,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688ab79a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:05:18, skipping insertion in model container [2024-10-12 00:05:18,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:05:16" (2/3) ... [2024-10-12 00:05:18,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@688ab79a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:05:18, skipping insertion in model container [2024-10-12 00:05:18,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:05:18" (3/3) ... [2024-10-12 00:05:18,648 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2024-10-12 00:05:18,669 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:05:18,669 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-10-12 00:05:18,669 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:05:18,808 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-12 00:05:18,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 98 transitions, 217 flow [2024-10-12 00:05:18,911 INFO L124 PetriNetUnfolderBase]: 11/95 cut-off events. [2024-10-12 00:05:18,911 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-12 00:05:18,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 11/95 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 376 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 81. Up to 2 conditions per place. [2024-10-12 00:05:18,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 98 transitions, 217 flow [2024-10-12 00:05:18,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 93 transitions, 201 flow [2024-10-12 00:05:18,936 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:05:18,944 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;@67bebff1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:05:18,944 INFO L334 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2024-10-12 00:05:18,948 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:05:18,948 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-12 00:05:18,948 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:05:18,948 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:18,949 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-12 00:05:18,950 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-12 00:05:18,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:18,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1091473, now seen corresponding path program 1 times [2024-10-12 00:05:18,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:18,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573901163] [2024-10-12 00:05:18,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:18,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:19,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:19,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573901163] [2024-10-12 00:05:19,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573901163] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:19,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:19,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:05:19,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294738445] [2024-10-12 00:05:19,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:19,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:19,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:19,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:19,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:19,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-10-12 00:05:19,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:19,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:19,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-10-12 00:05:19,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:22,214 INFO L124 PetriNetUnfolderBase]: 10484/18132 cut-off events. [2024-10-12 00:05:22,215 INFO L125 PetriNetUnfolderBase]: For 593/593 co-relation queries the response was YES. [2024-10-12 00:05:22,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33028 conditions, 18132 events. 10484/18132 cut-off events. For 593/593 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 148660 event pairs, 8602 based on Foata normal form. 941/12136 useless extension candidates. Maximal degree in co-relation 31779. Up to 14417 conditions per place. [2024-10-12 00:05:22,409 INFO L140 encePairwiseOnDemand]: 78/98 looper letters, 57 selfloop transitions, 7 changer transitions 0/90 dead transitions. [2024-10-12 00:05:22,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 323 flow [2024-10-12 00:05:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:05:22,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:05:22,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 193 transitions. [2024-10-12 00:05:22,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4923469387755102 [2024-10-12 00:05:22,429 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 201 flow. Second operand 4 states and 193 transitions. [2024-10-12 00:05:22,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 323 flow [2024-10-12 00:05:22,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 90 transitions, 314 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-12 00:05:22,448 INFO L231 Difference]: Finished difference. Result has 87 places, 90 transitions, 234 flow [2024-10-12 00:05:22,451 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=87, PETRI_TRANSITIONS=90} [2024-10-12 00:05:22,458 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -5 predicate places. [2024-10-12 00:05:22,458 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 90 transitions, 234 flow [2024-10-12 00:05:22,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:22,459 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:22,460 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-12 00:05:22,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:05:22,460 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-12 00:05:22,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:22,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1842604543, now seen corresponding path program 1 times [2024-10-12 00:05:22,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:22,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699055644] [2024-10-12 00:05:22,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:22,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:22,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:22,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699055644] [2024-10-12 00:05:22,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699055644] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:22,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356511226] [2024-10-12 00:05:22,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:22,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:22,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:22,692 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) [2024-10-12 00:05:22,694 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 [2024-10-12 00:05:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:22,784 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:05:22,788 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:22,845 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:05:22,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356511226] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:22,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:05:22,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-12 00:05:22,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113331664] [2024-10-12 00:05:22,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:22,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:05:22,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:22,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:05:22,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:05:22,864 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-10-12 00:05:22,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 90 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:22,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:22,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-10-12 00:05:22,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:26,105 INFO L124 PetriNetUnfolderBase]: 10484/18130 cut-off events. [2024-10-12 00:05:26,106 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-10-12 00:05:26,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32877 conditions, 18130 events. 10484/18130 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 1166. Compared 148872 event pairs, 8602 based on Foata normal form. 2/11198 useless extension candidates. Maximal degree in co-relation 32827. Up to 14407 conditions per place. [2024-10-12 00:05:26,500 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 50 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2024-10-12 00:05:26,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 88 transitions, 350 flow [2024-10-12 00:05:26,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:05:26,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:05:26,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2024-10-12 00:05:26,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-10-12 00:05:26,505 INFO L175 Difference]: Start difference. First operand has 87 places, 90 transitions, 234 flow. Second operand 6 states and 238 transitions. [2024-10-12 00:05:26,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 88 transitions, 350 flow [2024-10-12 00:05:26,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 88 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:05:26,512 INFO L231 Difference]: Finished difference. Result has 90 places, 88 transitions, 250 flow [2024-10-12 00:05:26,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=90, PETRI_TRANSITIONS=88} [2024-10-12 00:05:26,514 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, -2 predicate places. [2024-10-12 00:05:26,514 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 88 transitions, 250 flow [2024-10-12 00:05:26,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:26,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:26,515 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-12 00:05:26,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-12 00:05:26,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:26,717 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-12 00:05:26,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:26,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1286164917, now seen corresponding path program 1 times [2024-10-12 00:05:26,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:26,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923381237] [2024-10-12 00:05:26,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:26,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:26,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:26,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923381237] [2024-10-12 00:05:26,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923381237] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:26,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481685800] [2024-10-12 00:05:26,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:26,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:26,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:26,869 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) [2024-10-12 00:05:26,871 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 [2024-10-12 00:05:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:26,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:05:26,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:27,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:05:27,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:27,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481685800] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:05:27,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:05:27,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-12 00:05:27,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532812874] [2024-10-12 00:05:27,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:05:27,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:05:27,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:27,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:05:27,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:05:27,093 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-10-12 00:05:27,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 88 transitions, 250 flow. Second operand has 12 states, 12 states have (on average 30.083333333333332) internal successors, (361), 12 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:27,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:27,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-10-12 00:05:27,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:30,125 INFO L124 PetriNetUnfolderBase]: 10490/18154 cut-off events. [2024-10-12 00:05:30,126 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-10-12 00:05:30,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32971 conditions, 18154 events. 10490/18154 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 149062 event pairs, 8602 based on Foata normal form. 6/11225 useless extension candidates. Maximal degree in co-relation 32829. Up to 14418 conditions per place. [2024-10-12 00:05:30,480 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 55 selfloop transitions, 25 changer transitions 0/106 dead transitions. [2024-10-12 00:05:30,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 106 transitions, 524 flow [2024-10-12 00:05:30,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:05:30,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:05:30,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 376 transitions. [2024-10-12 00:05:30,484 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3836734693877551 [2024-10-12 00:05:30,485 INFO L175 Difference]: Start difference. First operand has 90 places, 88 transitions, 250 flow. Second operand 10 states and 376 transitions. [2024-10-12 00:05:30,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 106 transitions, 524 flow [2024-10-12 00:05:30,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 106 transitions, 466 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-10-12 00:05:30,498 INFO L231 Difference]: Finished difference. Result has 97 places, 106 transitions, 390 flow [2024-10-12 00:05:30,499 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=390, PETRI_PLACES=97, PETRI_TRANSITIONS=106} [2024-10-12 00:05:30,499 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 5 predicate places. [2024-10-12 00:05:30,500 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 106 transitions, 390 flow [2024-10-12 00:05:30,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 30.083333333333332) internal successors, (361), 12 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:30,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:30,506 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:30,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-12 00:05:30,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:30,707 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-12 00:05:30,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:30,707 INFO L85 PathProgramCache]: Analyzing trace with hash -2007898327, now seen corresponding path program 1 times [2024-10-12 00:05:30,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:30,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23744248] [2024-10-12 00:05:30,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:30,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:30,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:30,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:30,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23744248] [2024-10-12 00:05:30,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23744248] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:30,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:30,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:05:30,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928025345] [2024-10-12 00:05:30,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:30,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:30,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:30,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:30,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:30,894 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 98 [2024-10-12 00:05:30,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 106 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:30,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:30,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 98 [2024-10-12 00:05:30,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:33,116 INFO L124 PetriNetUnfolderBase]: 10490/18170 cut-off events. [2024-10-12 00:05:33,117 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2024-10-12 00:05:33,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33040 conditions, 18170 events. 10490/18170 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 149066 event pairs, 8602 based on Foata normal form. 4/11241 useless extension candidates. Maximal degree in co-relation 32947. Up to 14433 conditions per place. [2024-10-12 00:05:33,262 INFO L140 encePairwiseOnDemand]: 93/98 looper letters, 84 selfloop transitions, 4 changer transitions 0/116 dead transitions. [2024-10-12 00:05:33,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 116 transitions, 643 flow [2024-10-12 00:05:33,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:05:33,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:05:33,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 228 transitions. [2024-10-12 00:05:33,264 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46530612244897956 [2024-10-12 00:05:33,264 INFO L175 Difference]: Start difference. First operand has 97 places, 106 transitions, 390 flow. Second operand 5 states and 228 transitions. [2024-10-12 00:05:33,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 116 transitions, 643 flow [2024-10-12 00:05:33,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 116 transitions, 610 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-10-12 00:05:33,269 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 396 flow [2024-10-12 00:05:33,270 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=396, PETRI_PLACES=101, PETRI_TRANSITIONS=107} [2024-10-12 00:05:33,271 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 9 predicate places. [2024-10-12 00:05:33,271 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 396 flow [2024-10-12 00:05:33,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:33,272 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:33,272 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:33,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 00:05:33,272 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-12 00:05:33,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:33,273 INFO L85 PathProgramCache]: Analyzing trace with hash -329465447, now seen corresponding path program 1 times [2024-10-12 00:05:33,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:33,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544588496] [2024-10-12 00:05:33,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:33,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:33,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:05:33,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:33,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544588496] [2024-10-12 00:05:33,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544588496] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:33,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:33,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 00:05:33,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120269272] [2024-10-12 00:05:33,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:33,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:05:33,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:33,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:05:33,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:05:33,496 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 98 [2024-10-12 00:05:33,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 107 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:33,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:33,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 98 [2024-10-12 00:05:33,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:37,174 INFO L124 PetriNetUnfolderBase]: 17375/29213 cut-off events. [2024-10-12 00:05:37,175 INFO L125 PetriNetUnfolderBase]: For 362/362 co-relation queries the response was YES. [2024-10-12 00:05:37,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53835 conditions, 29213 events. 17375/29213 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 1467. Compared 241275 event pairs, 12164 based on Foata normal form. 0/18959 useless extension candidates. Maximal degree in co-relation 53750. Up to 15572 conditions per place. [2024-10-12 00:05:37,446 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 171 selfloop transitions, 12 changer transitions 0/210 dead transitions. [2024-10-12 00:05:37,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 210 transitions, 980 flow [2024-10-12 00:05:37,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:05:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:05:37,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 354 transitions. [2024-10-12 00:05:37,449 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6020408163265306 [2024-10-12 00:05:37,450 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 396 flow. Second operand 6 states and 354 transitions. [2024-10-12 00:05:37,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 210 transitions, 980 flow [2024-10-12 00:05:37,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 210 transitions, 976 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:37,457 INFO L231 Difference]: Finished difference. Result has 108 places, 111 transitions, 443 flow [2024-10-12 00:05:37,458 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=443, PETRI_PLACES=108, PETRI_TRANSITIONS=111} [2024-10-12 00:05:37,459 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 16 predicate places. [2024-10-12 00:05:37,459 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 111 transitions, 443 flow [2024-10-12 00:05:37,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.833333333333336) internal successors, (203), 6 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:37,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:37,460 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:37,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 00:05:37,460 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-12 00:05:37,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:37,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1623494332, now seen corresponding path program 1 times [2024-10-12 00:05:37,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:37,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353881172] [2024-10-12 00:05:37,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:37,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:37,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:05:37,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:37,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353881172] [2024-10-12 00:05:37,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353881172] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:37,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:37,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:05:37,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628483527] [2024-10-12 00:05:37,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:37,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:05:37,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:37,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:05:37,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:05:37,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 98 [2024-10-12 00:05:37,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 111 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:37,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:37,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 98 [2024-10-12 00:05:37,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:44,087 INFO L124 PetriNetUnfolderBase]: 31437/51477 cut-off events. [2024-10-12 00:05:44,088 INFO L125 PetriNetUnfolderBase]: For 6035/6451 co-relation queries the response was YES. [2024-10-12 00:05:44,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102654 conditions, 51477 events. 31437/51477 cut-off events. For 6035/6451 co-relation queries the response was YES. Maximal size of possible extension queue 1938. Compared 430220 event pairs, 17008 based on Foata normal form. 1044/35531 useless extension candidates. Maximal degree in co-relation 102557. Up to 26896 conditions per place. [2024-10-12 00:05:44,637 INFO L140 encePairwiseOnDemand]: 92/98 looper letters, 156 selfloop transitions, 5 changer transitions 0/188 dead transitions. [2024-10-12 00:05:44,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 188 transitions, 945 flow [2024-10-12 00:05:44,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:05:44,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:05:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 256 transitions. [2024-10-12 00:05:44,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-10-12 00:05:44,639 INFO L175 Difference]: Start difference. First operand has 108 places, 111 transitions, 443 flow. Second operand 4 states and 256 transitions. [2024-10-12 00:05:44,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 188 transitions, 945 flow [2024-10-12 00:05:44,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 188 transitions, 929 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:05:44,689 INFO L231 Difference]: Finished difference. Result has 111 places, 115 transitions, 470 flow [2024-10-12 00:05:44,689 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=470, PETRI_PLACES=111, PETRI_TRANSITIONS=115} [2024-10-12 00:05:44,689 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 19 predicate places. [2024-10-12 00:05:44,690 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 115 transitions, 470 flow [2024-10-12 00:05:44,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:44,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:44,691 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:44,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 00:05:44,691 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-12 00:05:44,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:44,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1060977136, now seen corresponding path program 1 times [2024-10-12 00:05:44,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:44,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358318189] [2024-10-12 00:05:44,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:44,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:44,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:05:44,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:44,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358318189] [2024-10-12 00:05:44,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358318189] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:05:44,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:05:44,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-12 00:05:44,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633751526] [2024-10-12 00:05:44,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:05:44,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:05:44,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:44,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:05:44,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:05:44,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 98 [2024-10-12 00:05:44,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 115 transitions, 470 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:44,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:44,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 98 [2024-10-12 00:05:44,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:05:53,451 INFO L124 PetriNetUnfolderBase]: 44277/74188 cut-off events. [2024-10-12 00:05:53,451 INFO L125 PetriNetUnfolderBase]: For 26446/28463 co-relation queries the response was YES. [2024-10-12 00:05:53,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156664 conditions, 74188 events. 44277/74188 cut-off events. For 26446/28463 co-relation queries the response was YES. Maximal size of possible extension queue 2602. Compared 668413 event pairs, 13958 based on Foata normal form. 937/51487 useless extension candidates. Maximal degree in co-relation 156566. Up to 39187 conditions per place. [2024-10-12 00:05:54,740 INFO L140 encePairwiseOnDemand]: 91/98 looper letters, 128 selfloop transitions, 3 changer transitions 0/160 dead transitions. [2024-10-12 00:05:54,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 160 transitions, 877 flow [2024-10-12 00:05:54,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:05:54,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:05:54,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 195 transitions. [2024-10-12 00:05:54,743 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6632653061224489 [2024-10-12 00:05:54,743 INFO L175 Difference]: Start difference. First operand has 111 places, 115 transitions, 470 flow. Second operand 3 states and 195 transitions. [2024-10-12 00:05:54,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 160 transitions, 877 flow [2024-10-12 00:05:54,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 160 transitions, 871 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:05:54,778 INFO L231 Difference]: Finished difference. Result has 113 places, 117 transitions, 492 flow [2024-10-12 00:05:54,779 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=113, PETRI_TRANSITIONS=117} [2024-10-12 00:05:54,779 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 21 predicate places. [2024-10-12 00:05:54,780 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 117 transitions, 492 flow [2024-10-12 00:05:54,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:54,780 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:05:54,780 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:05:54,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 00:05:54,781 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-12 00:05:54,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:05:54,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1060977132, now seen corresponding path program 1 times [2024-10-12 00:05:54,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:05:54,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864395198] [2024-10-12 00:05:54,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:54,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:05:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:54,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:54,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:05:54,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864395198] [2024-10-12 00:05:54,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864395198] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:05:54,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107422546] [2024-10-12 00:05:54,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:05:54,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:05:54,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:05:54,945 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) [2024-10-12 00:05:54,957 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 [2024-10-12 00:05:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:05:55,067 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-12 00:05:55,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:05:55,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:55,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:05:55,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:05:55,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107422546] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:05:55,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:05:55,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-10-12 00:05:55,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498038687] [2024-10-12 00:05:55,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:05:55,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-12 00:05:55,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:05:55,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-12 00:05:55,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-10-12 00:05:55,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 98 [2024-10-12 00:05:55,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 117 transitions, 492 flow. Second operand has 17 states, 17 states have (on average 30.647058823529413) internal successors, (521), 17 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:05:55,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:05:55,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 98 [2024-10-12 00:05:55,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:06:08,041 INFO L124 PetriNetUnfolderBase]: 54138/91002 cut-off events. [2024-10-12 00:06:08,043 INFO L125 PetriNetUnfolderBase]: For 32550/34026 co-relation queries the response was YES. [2024-10-12 00:06:08,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200359 conditions, 91002 events. 54138/91002 cut-off events. For 32550/34026 co-relation queries the response was YES. Maximal size of possible extension queue 3045. Compared 839518 event pairs, 39554 based on Foata normal form. 1188/68022 useless extension candidates. Maximal degree in co-relation 200227. Up to 60456 conditions per place. [2024-10-12 00:06:09,126 INFO L140 encePairwiseOnDemand]: 88/98 looper letters, 150 selfloop transitions, 41 changer transitions 0/218 dead transitions. [2024-10-12 00:06:09,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 218 transitions, 1297 flow [2024-10-12 00:06:09,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-12 00:06:09,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-12 00:06:09,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 516 transitions. [2024-10-12 00:06:09,132 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4050235478806907 [2024-10-12 00:06:09,132 INFO L175 Difference]: Start difference. First operand has 113 places, 117 transitions, 492 flow. Second operand 13 states and 516 transitions. [2024-10-12 00:06:09,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 218 transitions, 1297 flow [2024-10-12 00:06:09,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 218 transitions, 1292 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:06:09,300 INFO L231 Difference]: Finished difference. Result has 128 places, 137 transitions, 755 flow [2024-10-12 00:06:09,304 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=755, PETRI_PLACES=128, PETRI_TRANSITIONS=137} [2024-10-12 00:06:09,305 INFO L277 CegarLoopForPetriNet]: 92 programPoint places, 36 predicate places. [2024-10-12 00:06:09,305 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 137 transitions, 755 flow [2024-10-12 00:06:09,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 30.647058823529413) internal successors, (521), 17 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:09,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:06:09,306 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:06:09,343 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 [2024-10-12 00:06:09,511 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 [2024-10-12 00:06:09,512 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2024-10-12 00:06:09,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:06:09,517 INFO L85 PathProgramCache]: Analyzing trace with hash -377384081, now seen corresponding path program 1 times [2024-10-12 00:06:09,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:06:09,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81358099] [2024-10-12 00:06:09,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:09,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:06:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:09,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:06:09,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81358099] [2024-10-12 00:06:09,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81358099] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:06:09,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433270857] [2024-10-12 00:06:09,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:06:09,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:06:09,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:06:09,691 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) [2024-10-12 00:06:09,702 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 [2024-10-12 00:06:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:06:09,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-12 00:06:09,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:06:09,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2024-10-12 00:06:09,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:09,924 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:06:09,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2024-10-12 00:06:10,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:06:10,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433270857] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:06:10,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:06:10,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2024-10-12 00:06:10,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357852907] [2024-10-12 00:06:10,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:06:10,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-12 00:06:10,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:06:10,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-12 00:06:10,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-10-12 00:06:10,153 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 98 [2024-10-12 00:06:10,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 137 transitions, 755 flow. Second operand has 18 states, 18 states have (on average 29.5) internal successors, (531), 18 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:06:10,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:06:10,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 98 [2024-10-12 00:06:10,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand