./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-three-array-max.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-three-array-max.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 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:09:01,668 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:09:01,756 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:09:01,763 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:09:01,766 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:09:01,788 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:09:01,789 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:09:01,790 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:09:01,790 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:09:01,791 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:09:01,791 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:09:01,791 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:09:01,792 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:09:01,792 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:09:01,793 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:09:01,793 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:09:01,794 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:09:01,794 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:09:01,794 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:09:01,795 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:09:01,795 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:09:01,796 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:09:01,796 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:09:01,796 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:09:01,796 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:09:01,797 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:09:01,797 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:09:01,797 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:09:01,798 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:09:01,798 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:09:01,798 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:09:01,799 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:09:01,799 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:09:01,803 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:09:01,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:09:01,804 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:09:01,804 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:09:01,805 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:09:01,805 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:09:01,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:09:01,805 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:09:01,807 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:09:01,807 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:09:01,808 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:09:01,808 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 670814d0a16da58b0f26835e20c05a244e2f373856f13b9d4ff2a931783edf81 [2024-10-12 00:09:02,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:09:02,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:09:02,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:09:02,086 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:09:02,087 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:09:02,088 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2024-10-12 00:09:03,623 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:09:03,800 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:09:03,800 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-three-array-max.wvr.c [2024-10-12 00:09:03,808 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d2b7e7cd5/2911d3e75c4f417694067646a770c859/FLAG06e157d30 [2024-10-12 00:09:03,822 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/d2b7e7cd5/2911d3e75c4f417694067646a770c859 [2024-10-12 00:09:03,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:09:03,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:09:03,830 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:09:03,830 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:09:03,835 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:09:03,837 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:09:03" (1/1) ... [2024-10-12 00:09:03,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c202ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:03, skipping insertion in model container [2024-10-12 00:09:03,841 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:09:03" (1/1) ... [2024-10-12 00:09:03,869 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:09:04,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:09:04,074 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:09:04,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:09:04,139 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:09:04,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:04 WrapperNode [2024-10-12 00:09:04,140 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:09:04,141 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:09:04,141 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:09:04,141 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:09:04,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:04" (1/1) ... [2024-10-12 00:09:04,161 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:04" (1/1) ... [2024-10-12 00:09:04,193 INFO L138 Inliner]: procedures = 25, calls = 43, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 276 [2024-10-12 00:09:04,194 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:09:04,194 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:09:04,195 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:09:04,195 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:09:04,205 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:04" (1/1) ... [2024-10-12 00:09:04,205 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:04" (1/1) ... [2024-10-12 00:09:04,210 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:04" (1/1) ... [2024-10-12 00:09:04,234 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-10-12 00:09:04,238 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:04" (1/1) ... [2024-10-12 00:09:04,238 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:04" (1/1) ... [2024-10-12 00:09:04,251 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:04" (1/1) ... [2024-10-12 00:09:04,257 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:04" (1/1) ... [2024-10-12 00:09:04,259 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:04" (1/1) ... [2024-10-12 00:09:04,261 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:04" (1/1) ... [2024-10-12 00:09:04,268 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:09:04,270 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:09:04,273 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:09:04,273 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:09:04,274 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:04" (1/1) ... [2024-10-12 00:09:04,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:09:04,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:04,319 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 00:09:04,325 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 00:09:04,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:09:04,377 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:09:04,377 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:09:04,377 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:09:04,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:09:04,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-12 00:09:04,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-12 00:09:04,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:09:04,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-12 00:09:04,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-12 00:09:04,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-12 00:09:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-12 00:09:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-12 00:09:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-12 00:09:04,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:09:04,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:09:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-12 00:09:04,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-12 00:09:04,384 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 00:09:04,486 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:09:04,488 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:09:05,041 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:09:05,043 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:09:05,446 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:09:05,447 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-12 00:09:05,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:09:05 BoogieIcfgContainer [2024-10-12 00:09:05,448 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:09:05,451 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:09:05,451 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:09:05,455 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:09:05,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:09:03" (1/3) ... [2024-10-12 00:09:05,456 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7045d892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:09:05, skipping insertion in model container [2024-10-12 00:09:05,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:09:04" (2/3) ... [2024-10-12 00:09:05,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7045d892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:09:05, skipping insertion in model container [2024-10-12 00:09:05,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:09:05" (3/3) ... [2024-10-12 00:09:05,458 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2024-10-12 00:09:05,477 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:09:05,477 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2024-10-12 00:09:05,478 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:09:05,603 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-12 00:09:05,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 105 transitions, 231 flow [2024-10-12 00:09:05,702 INFO L124 PetriNetUnfolderBase]: 11/102 cut-off events. [2024-10-12 00:09:05,703 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-12 00:09:05,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 102 events. 11/102 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 250 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-10-12 00:09:05,708 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 105 transitions, 231 flow [2024-10-12 00:09:05,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 101 transitions, 220 flow [2024-10-12 00:09:05,728 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:09:05,737 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;@57b03bd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:09:05,737 INFO L334 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2024-10-12 00:09:05,741 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:09:05,742 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-12 00:09:05,742 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-12 00:09:05,742 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:05,743 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-12 00:09:05,744 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:05,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:05,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1041504, now seen corresponding path program 1 times [2024-10-12 00:09:05,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:05,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160615167] [2024-10-12 00:09:05,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:05,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:05,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:06,070 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 00:09:06,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:06,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160615167] [2024-10-12 00:09:06,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160615167] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:06,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:06,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:09:06,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568395161] [2024-10-12 00:09:06,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:06,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:09:06,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:06,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:09:06,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:09:06,146 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-10-12 00:09:06,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 101 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:06,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:06,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-10-12 00:09:06,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:06,698 INFO L124 PetriNetUnfolderBase]: 1153/2343 cut-off events. [2024-10-12 00:09:06,698 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-10-12 00:09:06,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4036 conditions, 2343 events. 1153/2343 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16172 event pairs, 826 based on Foata normal form. 3/1752 useless extension candidates. Maximal degree in co-relation 3589. Up to 1545 conditions per place. [2024-10-12 00:09:06,728 INFO L140 encePairwiseOnDemand]: 87/105 looper letters, 52 selfloop transitions, 10 changer transitions 0/108 dead transitions. [2024-10-12 00:09:06,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 108 transitions, 358 flow [2024-10-12 00:09:06,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:09:06,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:09:06,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2024-10-12 00:09:06,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-10-12 00:09:06,745 INFO L175 Difference]: Start difference. First operand has 100 places, 101 transitions, 220 flow. Second operand 4 states and 266 transitions. [2024-10-12 00:09:06,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 108 transitions, 358 flow [2024-10-12 00:09:06,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 108 transitions, 346 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-12 00:09:06,760 INFO L231 Difference]: Finished difference. Result has 98 places, 108 transitions, 292 flow [2024-10-12 00:09:06,762 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=98, PETRI_TRANSITIONS=108} [2024-10-12 00:09:06,768 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -2 predicate places. [2024-10-12 00:09:06,769 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 108 transitions, 292 flow [2024-10-12 00:09:06,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:06,769 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:06,770 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-12 00:09:06,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:09:06,770 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:06,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:06,771 INFO L85 PathProgramCache]: Analyzing trace with hash 963766068, now seen corresponding path program 1 times [2024-10-12 00:09:06,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:06,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47130066] [2024-10-12 00:09:06,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:06,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:06,953 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 00:09:06,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:06,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47130066] [2024-10-12 00:09:06,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47130066] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:06,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792917919] [2024-10-12 00:09:06,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:06,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:06,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:06,958 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 00:09:06,960 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 00:09:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:07,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:09:07,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:07,134 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 00:09:07,134 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:09:07,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792917919] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:07,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:09:07,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-12 00:09:07,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620872847] [2024-10-12 00:09:07,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:07,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:09:07,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:07,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:09:07,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-12 00:09:07,172 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-10-12 00:09:07,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 108 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:07,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:07,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-10-12 00:09:07,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:07,627 INFO L124 PetriNetUnfolderBase]: 1153/2340 cut-off events. [2024-10-12 00:09:07,628 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-10-12 00:09:07,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3971 conditions, 2340 events. 1153/2340 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16144 event pairs, 826 based on Foata normal form. 3/1754 useless extension candidates. Maximal degree in co-relation 3898. Up to 1530 conditions per place. [2024-10-12 00:09:07,649 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 42 selfloop transitions, 17 changer transitions 0/105 dead transitions. [2024-10-12 00:09:07,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 105 transitions, 398 flow [2024-10-12 00:09:07,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:09:07,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:09:07,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 356 transitions. [2024-10-12 00:09:07,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5650793650793651 [2024-10-12 00:09:07,653 INFO L175 Difference]: Start difference. First operand has 98 places, 108 transitions, 292 flow. Second operand 6 states and 356 transitions. [2024-10-12 00:09:07,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 105 transitions, 398 flow [2024-10-12 00:09:07,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 105 transitions, 398 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:09:07,657 INFO L231 Difference]: Finished difference. Result has 100 places, 105 transitions, 314 flow [2024-10-12 00:09:07,658 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=314, PETRI_PLACES=100, PETRI_TRANSITIONS=105} [2024-10-12 00:09:07,658 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 0 predicate places. [2024-10-12 00:09:07,659 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 105 transitions, 314 flow [2024-10-12 00:09:07,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:07,659 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:07,659 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-12 00:09:07,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-12 00:09:07,860 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 00:09:07,861 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:07,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:07,862 INFO L85 PathProgramCache]: Analyzing trace with hash 964607810, now seen corresponding path program 1 times [2024-10-12 00:09:07,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:07,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837349441] [2024-10-12 00:09:07,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:07,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:08,014 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 00:09:08,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:08,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837349441] [2024-10-12 00:09:08,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837349441] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:08,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:08,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:09:08,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530305973] [2024-10-12 00:09:08,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:08,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:09:08,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:08,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:09:08,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:09:08,063 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 105 [2024-10-12 00:09:08,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 105 transitions, 314 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:08,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:08,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 105 [2024-10-12 00:09:08,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:08,439 INFO L124 PetriNetUnfolderBase]: 1154/2357 cut-off events. [2024-10-12 00:09:08,440 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-10-12 00:09:08,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4020 conditions, 2357 events. 1154/2357 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16166 event pairs, 826 based on Foata normal form. 4/1771 useless extension candidates. Maximal degree in co-relation 3934. Up to 1545 conditions per place. [2024-10-12 00:09:08,458 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 63 selfloop transitions, 10 changer transitions 0/110 dead transitions. [2024-10-12 00:09:08,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 110 transitions, 470 flow [2024-10-12 00:09:08,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:09:08,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:09:08,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 242 transitions. [2024-10-12 00:09:08,461 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5761904761904761 [2024-10-12 00:09:08,461 INFO L175 Difference]: Start difference. First operand has 100 places, 105 transitions, 314 flow. Second operand 4 states and 242 transitions. [2024-10-12 00:09:08,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 110 transitions, 470 flow [2024-10-12 00:09:08,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 110 transitions, 432 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-10-12 00:09:08,468 INFO L231 Difference]: Finished difference. Result has 99 places, 108 transitions, 340 flow [2024-10-12 00:09:08,468 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=340, PETRI_PLACES=99, PETRI_TRANSITIONS=108} [2024-10-12 00:09:08,469 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, -1 predicate places. [2024-10-12 00:09:08,469 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 108 transitions, 340 flow [2024-10-12 00:09:08,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:08,470 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:08,470 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:08,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 00:09:08,470 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:08,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:08,471 INFO L85 PathProgramCache]: Analyzing trace with hash -161927917, now seen corresponding path program 1 times [2024-10-12 00:09:08,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:08,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594472777] [2024-10-12 00:09:08,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:08,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:08,585 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 00:09:08,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:08,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594472777] [2024-10-12 00:09:08,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594472777] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:08,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:08,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:09:08,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985677366] [2024-10-12 00:09:08,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:08,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-12 00:09:08,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:08,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:09:08,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:09:08,589 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 105 [2024-10-12 00:09:08,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 108 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:08,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:08,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 105 [2024-10-12 00:09:08,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:08,908 INFO L124 PetriNetUnfolderBase]: 1153/2356 cut-off events. [2024-10-12 00:09:08,908 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-10-12 00:09:08,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4014 conditions, 2356 events. 1153/2356 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16153 event pairs, 826 based on Foata normal form. 1/1772 useless extension candidates. Maximal degree in co-relation 3946. Up to 1549 conditions per place. [2024-10-12 00:09:08,956 INFO L140 encePairwiseOnDemand]: 102/105 looper letters, 56 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2024-10-12 00:09:08,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 107 transitions, 452 flow [2024-10-12 00:09:08,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:09:08,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-12 00:09:08,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2024-10-12 00:09:08,958 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6825396825396826 [2024-10-12 00:09:08,958 INFO L175 Difference]: Start difference. First operand has 99 places, 108 transitions, 340 flow. Second operand 3 states and 215 transitions. [2024-10-12 00:09:08,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 107 transitions, 452 flow [2024-10-12 00:09:08,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 107 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:09:08,966 INFO L231 Difference]: Finished difference. Result has 101 places, 107 transitions, 340 flow [2024-10-12 00:09:08,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=101, PETRI_TRANSITIONS=107} [2024-10-12 00:09:08,967 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 1 predicate places. [2024-10-12 00:09:08,967 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 107 transitions, 340 flow [2024-10-12 00:09:08,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:08,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:08,969 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-12 00:09:08,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 00:09:08,969 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:08,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:08,970 INFO L85 PathProgramCache]: Analyzing trace with hash -188021864, now seen corresponding path program 1 times [2024-10-12 00:09:08,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:08,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144444204] [2024-10-12 00:09:08,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:08,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:09,048 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 00:09:09,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:09,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144444204] [2024-10-12 00:09:09,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144444204] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:09,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658511752] [2024-10-12 00:09:09,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:09,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:09,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:09,052 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 00:09:09,053 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 00:09:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:09,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:09:09,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:09,158 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 00:09:09,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:09,208 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 00:09:09,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658511752] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:09,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:09,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-12 00:09:09,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465536616] [2024-10-12 00:09:09,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:09,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:09:09,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:09,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:09:09,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:09:09,254 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-10-12 00:09:09,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 107 transitions, 340 flow. Second operand has 12 states, 12 states have (on average 50.083333333333336) internal successors, (601), 12 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:09,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:09,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-10-12 00:09:09,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:09,730 INFO L124 PetriNetUnfolderBase]: 1162/2392 cut-off events. [2024-10-12 00:09:09,731 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-10-12 00:09:09,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4128 conditions, 2392 events. 1162/2392 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16368 event pairs, 826 based on Foata normal form. 9/1810 useless extension candidates. Maximal degree in co-relation 4107. Up to 1550 conditions per place. [2024-10-12 00:09:09,746 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 51 selfloop transitions, 37 changer transitions 0/134 dead transitions. [2024-10-12 00:09:09,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 134 transitions, 657 flow [2024-10-12 00:09:09,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:09:09,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:09:09,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 584 transitions. [2024-10-12 00:09:09,749 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5561904761904762 [2024-10-12 00:09:09,749 INFO L175 Difference]: Start difference. First operand has 101 places, 107 transitions, 340 flow. Second operand 10 states and 584 transitions. [2024-10-12 00:09:09,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 134 transitions, 657 flow [2024-10-12 00:09:09,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 134 transitions, 655 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:09:09,754 INFO L231 Difference]: Finished difference. Result has 112 places, 134 transitions, 603 flow [2024-10-12 00:09:09,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=603, PETRI_PLACES=112, PETRI_TRANSITIONS=134} [2024-10-12 00:09:09,755 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 12 predicate places. [2024-10-12 00:09:09,755 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 134 transitions, 603 flow [2024-10-12 00:09:09,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.083333333333336) internal successors, (601), 12 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:09,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:09,756 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:09,775 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 00:09:09,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:09,961 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:09,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:09,962 INFO L85 PathProgramCache]: Analyzing trace with hash -694835737, now seen corresponding path program 1 times [2024-10-12 00:09:09,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:09,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935299493] [2024-10-12 00:09:09,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:09,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:10,046 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 00:09:10,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:10,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935299493] [2024-10-12 00:09:10,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935299493] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:10,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:10,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:09:10,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920277258] [2024-10-12 00:09:10,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:10,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:09:10,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:10,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:09:10,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:09:10,054 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 105 [2024-10-12 00:09:10,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 134 transitions, 603 flow. Second operand has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:10,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:10,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 105 [2024-10-12 00:09:10,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:10,397 INFO L124 PetriNetUnfolderBase]: 1160/2390 cut-off events. [2024-10-12 00:09:10,397 INFO L125 PetriNetUnfolderBase]: For 163/163 co-relation queries the response was YES. [2024-10-12 00:09:10,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4181 conditions, 2390 events. 1160/2390 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16250 event pairs, 826 based on Foata normal form. 2/1807 useless extension candidates. Maximal degree in co-relation 4078. Up to 1563 conditions per place. [2024-10-12 00:09:10,449 INFO L140 encePairwiseOnDemand]: 98/105 looper letters, 71 selfloop transitions, 12 changer transitions 0/132 dead transitions. [2024-10-12 00:09:10,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 132 transitions, 755 flow [2024-10-12 00:09:10,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:09:10,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:09:10,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 275 transitions. [2024-10-12 00:09:10,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2024-10-12 00:09:10,452 INFO L175 Difference]: Start difference. First operand has 112 places, 134 transitions, 603 flow. Second operand 4 states and 275 transitions. [2024-10-12 00:09:10,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 132 transitions, 755 flow [2024-10-12 00:09:10,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 132 transitions, 707 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-10-12 00:09:10,457 INFO L231 Difference]: Finished difference. Result has 112 places, 132 transitions, 565 flow [2024-10-12 00:09:10,457 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=565, PETRI_PLACES=112, PETRI_TRANSITIONS=132} [2024-10-12 00:09:10,458 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 12 predicate places. [2024-10-12 00:09:10,458 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 132 transitions, 565 flow [2024-10-12 00:09:10,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.5) internal successors, (226), 4 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:10,458 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:10,459 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-12 00:09:10,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 00:09:10,459 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:10,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:10,460 INFO L85 PathProgramCache]: Analyzing trace with hash -270275348, now seen corresponding path program 2 times [2024-10-12 00:09:10,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:10,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172854405] [2024-10-12 00:09:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:10,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:10,627 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:10,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:10,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172854405] [2024-10-12 00:09:10,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172854405] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:10,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195889382] [2024-10-12 00:09:10,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:09:10,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:10,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:10,630 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 00:09:10,631 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 00:09:10,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:09:10,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:09:10,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:09:10,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:10,759 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:09:10,759 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:10,807 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:09:10,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195889382] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:10,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:10,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-12 00:09:10,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198085712] [2024-10-12 00:09:10,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:10,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 00:09:10,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:10,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 00:09:10,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-12 00:09:10,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-10-12 00:09:10,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 132 transitions, 565 flow. Second operand has 14 states, 14 states have (on average 50.142857142857146) internal successors, (702), 14 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:10,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:10,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-10-12 00:09:10,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:11,574 INFO L124 PetriNetUnfolderBase]: 1163/2401 cut-off events. [2024-10-12 00:09:11,575 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2024-10-12 00:09:11,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4204 conditions, 2401 events. 1163/2401 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16320 event pairs, 826 based on Foata normal form. 4/1822 useless extension candidates. Maximal degree in co-relation 4065. Up to 1546 conditions per place. [2024-10-12 00:09:11,592 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 47 selfloop transitions, 47 changer transitions 0/140 dead transitions. [2024-10-12 00:09:11,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 140 transitions, 808 flow [2024-10-12 00:09:11,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-12 00:09:11,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-12 00:09:11,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1271 transitions. [2024-10-12 00:09:11,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5043650793650793 [2024-10-12 00:09:11,597 INFO L175 Difference]: Start difference. First operand has 112 places, 132 transitions, 565 flow. Second operand 24 states and 1271 transitions. [2024-10-12 00:09:11,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 140 transitions, 808 flow [2024-10-12 00:09:11,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 140 transitions, 780 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:09:11,602 INFO L231 Difference]: Finished difference. Result has 133 places, 140 transitions, 710 flow [2024-10-12 00:09:11,603 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=710, PETRI_PLACES=133, PETRI_TRANSITIONS=140} [2024-10-12 00:09:11,603 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 33 predicate places. [2024-10-12 00:09:11,604 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 140 transitions, 710 flow [2024-10-12 00:09:11,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 50.142857142857146) internal successors, (702), 14 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:11,605 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:11,605 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:11,626 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 00:09:11,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:11,806 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:11,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:11,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1856241909, now seen corresponding path program 1 times [2024-10-12 00:09:11,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:11,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606959615] [2024-10-12 00:09:11,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:11,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:12,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:09:12,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:12,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606959615] [2024-10-12 00:09:12,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606959615] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:12,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779550621] [2024-10-12 00:09:12,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:12,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:12,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:12,195 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 00:09:12,196 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 00:09:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:12,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-12 00:09:12,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:12,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-12 00:09:12,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-12 00:09:12,407 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-12 00:09:12,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-12 00:09:12,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-12 00:09:12,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-12 00:09:12,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:09:12,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:12,501 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_100 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_100) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2024-10-12 00:09:12,583 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:09:12,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-10-12 00:09:12,593 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:09:12,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2024-10-12 00:09:12,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-10-12 00:09:12,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2024-10-12 00:09:12,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779550621] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:12,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:12,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-12 00:09:12,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129641968] [2024-10-12 00:09:12,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:12,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-12 00:09:12,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:12,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-12 00:09:12,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=104, Unknown=1, NotChecked=20, Total=156 [2024-10-12 00:09:12,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 105 [2024-10-12 00:09:12,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 140 transitions, 710 flow. Second operand has 13 states, 13 states have (on average 38.84615384615385) internal successors, (505), 13 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:12,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:12,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 105 [2024-10-12 00:09:12,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:13,387 INFO L124 PetriNetUnfolderBase]: 1161/2404 cut-off events. [2024-10-12 00:09:13,387 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2024-10-12 00:09:13,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4282 conditions, 2404 events. 1161/2404 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16311 event pairs, 826 based on Foata normal form. 0/1817 useless extension candidates. Maximal degree in co-relation 4195. Up to 1529 conditions per place. [2024-10-12 00:09:13,403 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 91 selfloop transitions, 27 changer transitions 0/148 dead transitions. [2024-10-12 00:09:13,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 148 transitions, 962 flow [2024-10-12 00:09:13,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 00:09:13,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-12 00:09:13,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 487 transitions. [2024-10-12 00:09:13,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42164502164502166 [2024-10-12 00:09:13,407 INFO L175 Difference]: Start difference. First operand has 133 places, 140 transitions, 710 flow. Second operand 11 states and 487 transitions. [2024-10-12 00:09:13,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 148 transitions, 962 flow [2024-10-12 00:09:13,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 148 transitions, 851 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-10-12 00:09:13,415 INFO L231 Difference]: Finished difference. Result has 132 places, 139 transitions, 651 flow [2024-10-12 00:09:13,416 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=651, PETRI_PLACES=132, PETRI_TRANSITIONS=139} [2024-10-12 00:09:13,416 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 32 predicate places. [2024-10-12 00:09:13,416 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 139 transitions, 651 flow [2024-10-12 00:09:13,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 38.84615384615385) internal successors, (505), 13 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:13,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:13,417 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:13,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-12 00:09:13,617 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,SelfDestructingSolverStorable7 [2024-10-12 00:09:13,618 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:13,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:13,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1708918148, now seen corresponding path program 1 times [2024-10-12 00:09:13,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:13,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665213324] [2024-10-12 00:09:13,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:13,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:13,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:09:13,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:13,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665213324] [2024-10-12 00:09:13,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665213324] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:13,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348466016] [2024-10-12 00:09:13,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:13,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:13,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:13,907 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) [2024-10-12 00:09:13,908 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 [2024-10-12 00:09:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:14,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-12 00:09:14,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:14,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-12 00:09:14,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-12 00:09:14,060 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-12 00:09:14,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-12 00:09:14,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-12 00:09:14,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-12 00:09:14,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:09:14,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:14,123 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_127 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_127) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2024-10-12 00:09:14,176 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:09:14,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-10-12 00:09:14,190 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:09:14,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-10-12 00:09:14,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-10-12 00:09:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2024-10-12 00:09:14,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348466016] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:14,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:14,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-10-12 00:09:14,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419007703] [2024-10-12 00:09:14,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:14,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-12 00:09:14,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:14,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-12 00:09:14,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=124, Unknown=1, NotChecked=22, Total=182 [2024-10-12 00:09:14,252 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 105 [2024-10-12 00:09:14,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 139 transitions, 651 flow. Second operand has 14 states, 14 states have (on average 38.857142857142854) internal successors, (544), 14 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:14,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:14,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 105 [2024-10-12 00:09:14,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:14,811 INFO L124 PetriNetUnfolderBase]: 1161/2403 cut-off events. [2024-10-12 00:09:14,811 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-10-12 00:09:14,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4254 conditions, 2403 events. 1161/2403 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16301 event pairs, 826 based on Foata normal form. 1/1820 useless extension candidates. Maximal degree in co-relation 4171. Up to 1533 conditions per place. [2024-10-12 00:09:14,829 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 84 selfloop transitions, 28 changer transitions 0/142 dead transitions. [2024-10-12 00:09:14,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 142 transitions, 879 flow [2024-10-12 00:09:14,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 00:09:14,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-12 00:09:14,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 479 transitions. [2024-10-12 00:09:14,832 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4147186147186147 [2024-10-12 00:09:14,832 INFO L175 Difference]: Start difference. First operand has 132 places, 139 transitions, 651 flow. Second operand 11 states and 479 transitions. [2024-10-12 00:09:14,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 142 transitions, 879 flow [2024-10-12 00:09:14,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 142 transitions, 869 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:09:14,837 INFO L231 Difference]: Finished difference. Result has 139 places, 138 transitions, 693 flow [2024-10-12 00:09:14,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=693, PETRI_PLACES=139, PETRI_TRANSITIONS=138} [2024-10-12 00:09:14,838 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 39 predicate places. [2024-10-12 00:09:14,838 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 138 transitions, 693 flow [2024-10-12 00:09:14,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 38.857142857142854) internal successors, (544), 14 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:14,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:14,839 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:14,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-12 00:09:15,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:15,044 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:15,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:15,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1436854551, now seen corresponding path program 1 times [2024-10-12 00:09:15,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:15,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291330591] [2024-10-12 00:09:15,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:15,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:15,435 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 00:09:15,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:15,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291330591] [2024-10-12 00:09:15,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291330591] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:15,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260410988] [2024-10-12 00:09:15,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:15,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:15,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:15,438 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) [2024-10-12 00:09:15,440 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 [2024-10-12 00:09:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:15,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-12 00:09:15,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:15,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-12 00:09:15,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-12 00:09:15,619 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-12 00:09:15,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-12 00:09:15,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-12 00:09:15,709 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-10-12 00:09:15,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 17 [2024-10-12 00:09:15,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-12 00:09:15,803 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 00:09:15,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:15,878 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_154 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_154) c_~A~0.base) c_~A~0.offset)))) is different from false [2024-10-12 00:09:15,925 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:09:15,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-10-12 00:09:15,934 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:09:15,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2024-10-12 00:09:15,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-10-12 00:09:15,976 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2024-10-12 00:09:15,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260410988] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:15,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:15,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 17 [2024-10-12 00:09:15,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747171234] [2024-10-12 00:09:15,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:15,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-12 00:09:15,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:15,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-12 00:09:15,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=255, Unknown=1, NotChecked=32, Total=342 [2024-10-12 00:09:16,004 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 105 [2024-10-12 00:09:16,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 138 transitions, 693 flow. Second operand has 19 states, 19 states have (on average 34.8421052631579) internal successors, (662), 19 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:16,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:16,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 105 [2024-10-12 00:09:16,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:16,881 INFO L124 PetriNetUnfolderBase]: 1160/2399 cut-off events. [2024-10-12 00:09:16,881 INFO L125 PetriNetUnfolderBase]: For 197/197 co-relation queries the response was YES. [2024-10-12 00:09:16,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4270 conditions, 2399 events. 1160/2399 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16280 event pairs, 826 based on Foata normal form. 1/1819 useless extension candidates. Maximal degree in co-relation 4186. Up to 1530 conditions per place. [2024-10-12 00:09:16,898 INFO L140 encePairwiseOnDemand]: 85/105 looper letters, 86 selfloop transitions, 31 changer transitions 0/143 dead transitions. [2024-10-12 00:09:16,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 143 transitions, 935 flow [2024-10-12 00:09:16,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-12 00:09:16,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-12 00:09:16,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 547 transitions. [2024-10-12 00:09:16,901 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37210884353741497 [2024-10-12 00:09:16,901 INFO L175 Difference]: Start difference. First operand has 139 places, 138 transitions, 693 flow. Second operand 14 states and 547 transitions. [2024-10-12 00:09:16,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 143 transitions, 935 flow [2024-10-12 00:09:16,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 143 transitions, 877 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-10-12 00:09:16,907 INFO L231 Difference]: Finished difference. Result has 143 places, 137 transitions, 705 flow [2024-10-12 00:09:16,907 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=705, PETRI_PLACES=143, PETRI_TRANSITIONS=137} [2024-10-12 00:09:16,908 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 43 predicate places. [2024-10-12 00:09:16,909 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 137 transitions, 705 flow [2024-10-12 00:09:16,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 34.8421052631579) internal successors, (662), 19 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:16,909 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:16,909 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:16,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-12 00:09:17,109 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,SelfDestructingSolverStorable9 [2024-10-12 00:09:17,110 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:17,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:17,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1592819132, now seen corresponding path program 1 times [2024-10-12 00:09:17,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:17,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716450266] [2024-10-12 00:09:17,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:17,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:17,510 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 00:09:17,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:17,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716450266] [2024-10-12 00:09:17,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716450266] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:17,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648818662] [2024-10-12 00:09:17,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:17,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:17,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:17,513 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) [2024-10-12 00:09:17,515 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 [2024-10-12 00:09:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:17,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-12 00:09:17,618 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:17,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-12 00:09:17,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-12 00:09:17,678 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-12 00:09:17,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-12 00:09:17,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-10-12 00:09:17,771 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-10-12 00:09:17,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2024-10-12 00:09:17,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-12 00:09:17,865 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 00:09:17,865 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:18,012 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:09:18,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-10-12 00:09:18,021 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:09:18,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2024-10-12 00:09:18,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-10-12 00:09:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:09:18,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648818662] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:18,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:18,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 18 [2024-10-12 00:09:18,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931117195] [2024-10-12 00:09:18,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:18,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-12 00:09:18,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:18,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-12 00:09:18,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=315, Unknown=4, NotChecked=0, Total=380 [2024-10-12 00:09:18,343 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 105 [2024-10-12 00:09:18,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 137 transitions, 705 flow. Second operand has 20 states, 20 states have (on average 34.85) internal successors, (697), 20 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:18,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:18,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 105 [2024-10-12 00:09:18,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:19,210 INFO L124 PetriNetUnfolderBase]: 1160/2399 cut-off events. [2024-10-12 00:09:19,210 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2024-10-12 00:09:19,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4289 conditions, 2399 events. 1160/2399 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16329 event pairs, 826 based on Foata normal form. 4/1824 useless extension candidates. Maximal degree in co-relation 4213. Up to 1534 conditions per place. [2024-10-12 00:09:19,227 INFO L140 encePairwiseOnDemand]: 84/105 looper letters, 80 selfloop transitions, 35 changer transitions 1/142 dead transitions. [2024-10-12 00:09:19,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 142 transitions, 959 flow [2024-10-12 00:09:19,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-12 00:09:19,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-12 00:09:19,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 639 transitions. [2024-10-12 00:09:19,230 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35798319327731093 [2024-10-12 00:09:19,230 INFO L175 Difference]: Start difference. First operand has 143 places, 137 transitions, 705 flow. Second operand 17 states and 639 transitions. [2024-10-12 00:09:19,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 142 transitions, 959 flow [2024-10-12 00:09:19,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 142 transitions, 911 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-10-12 00:09:19,236 INFO L231 Difference]: Finished difference. Result has 153 places, 140 transitions, 756 flow [2024-10-12 00:09:19,236 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=756, PETRI_PLACES=153, PETRI_TRANSITIONS=140} [2024-10-12 00:09:19,237 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 53 predicate places. [2024-10-12 00:09:19,237 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 140 transitions, 756 flow [2024-10-12 00:09:19,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 34.85) internal successors, (697), 20 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:19,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:19,238 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:19,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-12 00:09:19,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:19,442 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:19,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:19,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1944564241, now seen corresponding path program 1 times [2024-10-12 00:09:19,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:19,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067940217] [2024-10-12 00:09:19,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:19,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:19,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:09:19,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:19,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067940217] [2024-10-12 00:09:19,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067940217] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:19,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:19,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:09:19,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569507765] [2024-10-12 00:09:19,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:19,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:09:19,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:19,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:09:19,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:09:19,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 105 [2024-10-12 00:09:19,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 140 transitions, 756 flow. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:19,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:19,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 105 [2024-10-12 00:09:19,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:19,976 INFO L124 PetriNetUnfolderBase]: 1160/2393 cut-off events. [2024-10-12 00:09:19,976 INFO L125 PetriNetUnfolderBase]: For 268/268 co-relation queries the response was YES. [2024-10-12 00:09:19,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4285 conditions, 2393 events. 1160/2393 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16263 event pairs, 826 based on Foata normal form. 2/1820 useless extension candidates. Maximal degree in co-relation 4249. Up to 1579 conditions per place. [2024-10-12 00:09:19,994 INFO L140 encePairwiseOnDemand]: 91/105 looper letters, 90 selfloop transitions, 20 changer transitions 0/142 dead transitions. [2024-10-12 00:09:19,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 142 transitions, 980 flow [2024-10-12 00:09:19,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:09:19,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:09:19,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 303 transitions. [2024-10-12 00:09:19,997 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48095238095238096 [2024-10-12 00:09:19,997 INFO L175 Difference]: Start difference. First operand has 153 places, 140 transitions, 756 flow. Second operand 6 states and 303 transitions. [2024-10-12 00:09:19,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 142 transitions, 980 flow [2024-10-12 00:09:20,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 142 transitions, 889 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-10-12 00:09:20,003 INFO L231 Difference]: Finished difference. Result has 146 places, 142 transitions, 735 flow [2024-10-12 00:09:20,003 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=735, PETRI_PLACES=146, PETRI_TRANSITIONS=142} [2024-10-12 00:09:20,004 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 46 predicate places. [2024-10-12 00:09:20,006 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 142 transitions, 735 flow [2024-10-12 00:09:20,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:20,007 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:20,007 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:20,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 00:09:20,007 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:20,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:20,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1753780201, now seen corresponding path program 1 times [2024-10-12 00:09:20,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:20,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010003156] [2024-10-12 00:09:20,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:20,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-12 00:09:20,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:20,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010003156] [2024-10-12 00:09:20,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010003156] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:20,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229038114] [2024-10-12 00:09:20,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:20,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:20,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:20,181 INFO L229 MonitoredProcess]: Starting monitored process 9 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 00:09:20,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-12 00:09:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:20,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 00:09:20,295 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:20,382 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 00:09:20,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:20,457 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-10-12 00:09:20,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229038114] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:20,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:20,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2024-10-12 00:09:20,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831818818] [2024-10-12 00:09:20,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:20,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-12 00:09:20,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:20,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-12 00:09:20,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-10-12 00:09:20,604 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-10-12 00:09:20,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 142 transitions, 735 flow. Second operand has 21 states, 21 states have (on average 50.285714285714285) internal successors, (1056), 21 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:20,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:20,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-10-12 00:09:20,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:21,447 INFO L124 PetriNetUnfolderBase]: 2306/4722 cut-off events. [2024-10-12 00:09:21,447 INFO L125 PetriNetUnfolderBase]: For 382/382 co-relation queries the response was YES. [2024-10-12 00:09:21,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8268 conditions, 4722 events. 2306/4722 cut-off events. For 382/382 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 34279 event pairs, 1652 based on Foata normal form. 2/3583 useless extension candidates. Maximal degree in co-relation 8214. Up to 1555 conditions per place. [2024-10-12 00:09:21,480 INFO L140 encePairwiseOnDemand]: 95/105 looper letters, 96 selfloop transitions, 54 changer transitions 0/193 dead transitions. [2024-10-12 00:09:21,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 193 transitions, 1260 flow [2024-10-12 00:09:21,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 00:09:21,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-12 00:09:21,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 648 transitions. [2024-10-12 00:09:21,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.561038961038961 [2024-10-12 00:09:21,482 INFO L175 Difference]: Start difference. First operand has 146 places, 142 transitions, 735 flow. Second operand 11 states and 648 transitions. [2024-10-12 00:09:21,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 193 transitions, 1260 flow [2024-10-12 00:09:21,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 193 transitions, 1221 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-10-12 00:09:21,488 INFO L231 Difference]: Finished difference. Result has 152 places, 148 transitions, 868 flow [2024-10-12 00:09:21,489 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=868, PETRI_PLACES=152, PETRI_TRANSITIONS=148} [2024-10-12 00:09:21,489 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 52 predicate places. [2024-10-12 00:09:21,490 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 148 transitions, 868 flow [2024-10-12 00:09:21,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.285714285714285) internal successors, (1056), 21 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:21,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:21,490 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:21,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-12 00:09:21,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-12 00:09:21,691 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:21,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:21,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1423829912, now seen corresponding path program 1 times [2024-10-12 00:09:21,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:21,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083959384] [2024-10-12 00:09:21,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:21,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:21,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:09:21,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:21,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083959384] [2024-10-12 00:09:21,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083959384] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:21,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:21,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:09:21,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852002165] [2024-10-12 00:09:21,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:21,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:09:21,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:21,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:09:21,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:09:21,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 105 [2024-10-12 00:09:21,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 148 transitions, 868 flow. Second operand has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:21,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:21,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 105 [2024-10-12 00:09:21,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:22,788 INFO L124 PetriNetUnfolderBase]: 4920/8300 cut-off events. [2024-10-12 00:09:22,789 INFO L125 PetriNetUnfolderBase]: For 368/368 co-relation queries the response was YES. [2024-10-12 00:09:22,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15457 conditions, 8300 events. 4920/8300 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 57283 event pairs, 1728 based on Foata normal form. 244/6254 useless extension candidates. Maximal degree in co-relation 15406. Up to 5089 conditions per place. [2024-10-12 00:09:22,857 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 142 selfloop transitions, 4 changer transitions 0/189 dead transitions. [2024-10-12 00:09:22,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 189 transitions, 1246 flow [2024-10-12 00:09:22,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:09:22,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:09:22,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2024-10-12 00:09:22,859 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7238095238095238 [2024-10-12 00:09:22,859 INFO L175 Difference]: Start difference. First operand has 152 places, 148 transitions, 868 flow. Second operand 4 states and 304 transitions. [2024-10-12 00:09:22,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 189 transitions, 1246 flow [2024-10-12 00:09:22,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 189 transitions, 1210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:09:22,865 INFO L231 Difference]: Finished difference. Result has 155 places, 151 transitions, 861 flow [2024-10-12 00:09:22,866 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=861, PETRI_PLACES=155, PETRI_TRANSITIONS=151} [2024-10-12 00:09:22,866 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 55 predicate places. [2024-10-12 00:09:22,867 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 151 transitions, 861 flow [2024-10-12 00:09:22,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.25) internal successors, (229), 4 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:22,867 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:22,867 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:22,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 00:09:22,868 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:22,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:22,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1883356326, now seen corresponding path program 1 times [2024-10-12 00:09:22,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:22,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571649326] [2024-10-12 00:09:22,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:22,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:23,013 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:09:23,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:23,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571649326] [2024-10-12 00:09:23,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571649326] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:23,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917106123] [2024-10-12 00:09:23,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:23,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:23,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:23,016 INFO L229 MonitoredProcess]: Starting monitored process 10 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 00:09:23,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 00:09:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:23,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 00:09:23,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:09:23,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:23,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:09:23,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917106123] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:23,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:23,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-12 00:09:23,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030999331] [2024-10-12 00:09:23,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:23,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-12 00:09:23,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:23,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-12 00:09:23,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-12 00:09:23,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 105 [2024-10-12 00:09:23,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 151 transitions, 861 flow. Second operand has 15 states, 15 states have (on average 50.06666666666667) internal successors, (751), 15 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:23,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:23,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 105 [2024-10-12 00:09:23,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:24,302 INFO L124 PetriNetUnfolderBase]: 2465/4967 cut-off events. [2024-10-12 00:09:24,302 INFO L125 PetriNetUnfolderBase]: For 1763/1944 co-relation queries the response was YES. [2024-10-12 00:09:24,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10257 conditions, 4967 events. 2465/4967 cut-off events. For 1763/1944 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 34631 event pairs, 1594 based on Foata normal form. 0/3973 useless extension candidates. Maximal degree in co-relation 10203. Up to 2572 conditions per place. [2024-10-12 00:09:24,348 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 111 selfloop transitions, 53 changer transitions 0/206 dead transitions. [2024-10-12 00:09:24,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 206 transitions, 1410 flow [2024-10-12 00:09:24,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 00:09:24,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-12 00:09:24,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 641 transitions. [2024-10-12 00:09:24,351 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.554978354978355 [2024-10-12 00:09:24,351 INFO L175 Difference]: Start difference. First operand has 155 places, 151 transitions, 861 flow. Second operand 11 states and 641 transitions. [2024-10-12 00:09:24,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 206 transitions, 1410 flow [2024-10-12 00:09:24,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 206 transitions, 1401 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:09:24,362 INFO L231 Difference]: Finished difference. Result has 166 places, 153 transitions, 980 flow [2024-10-12 00:09:24,363 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=980, PETRI_PLACES=166, PETRI_TRANSITIONS=153} [2024-10-12 00:09:24,364 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 66 predicate places. [2024-10-12 00:09:24,364 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 153 transitions, 980 flow [2024-10-12 00:09:24,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 50.06666666666667) internal successors, (751), 15 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:24,365 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:24,365 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 2, 2, 2, 1, 1, 1] [2024-10-12 00:09:24,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-10-12 00:09:24,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:24,566 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:24,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:24,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1115627331, now seen corresponding path program 2 times [2024-10-12 00:09:24,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:24,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725977601] [2024-10-12 00:09:24,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:24,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:24,877 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:09:24,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:24,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725977601] [2024-10-12 00:09:24,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725977601] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:24,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886872715] [2024-10-12 00:09:24,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:09:24,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:24,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:24,879 INFO L229 MonitoredProcess]: Starting monitored process 11 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 00:09:24,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-12 00:09:24,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-12 00:09:24,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:09:24,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:09:24,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:25,039 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-12 00:09:25,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:25,091 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-10-12 00:09:25,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886872715] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:25,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:25,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 3, 3] total 20 [2024-10-12 00:09:25,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868056341] [2024-10-12 00:09:25,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:25,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-12 00:09:25,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:25,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-12 00:09:25,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2024-10-12 00:09:25,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-10-12 00:09:25,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 153 transitions, 980 flow. Second operand has 21 states, 21 states have (on average 50.23809523809524) internal successors, (1055), 21 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:25,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:25,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-10-12 00:09:25,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:26,149 INFO L124 PetriNetUnfolderBase]: 2362/4330 cut-off events. [2024-10-12 00:09:26,149 INFO L125 PetriNetUnfolderBase]: For 2096/2330 co-relation queries the response was YES. [2024-10-12 00:09:26,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10013 conditions, 4330 events. 2362/4330 cut-off events. For 2096/2330 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 27200 event pairs, 1849 based on Foata normal form. 4/3494 useless extension candidates. Maximal degree in co-relation 9957. Up to 3319 conditions per place. [2024-10-12 00:09:26,178 INFO L140 encePairwiseOnDemand]: 93/105 looper letters, 50 selfloop transitions, 70 changer transitions 0/163 dead transitions. [2024-10-12 00:09:26,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 163 transitions, 1327 flow [2024-10-12 00:09:26,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-12 00:09:26,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-12 00:09:26,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1024 transitions. [2024-10-12 00:09:26,181 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5132832080200501 [2024-10-12 00:09:26,181 INFO L175 Difference]: Start difference. First operand has 166 places, 153 transitions, 980 flow. Second operand 19 states and 1024 transitions. [2024-10-12 00:09:26,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 163 transitions, 1327 flow [2024-10-12 00:09:26,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 163 transitions, 1170 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-10-12 00:09:26,190 INFO L231 Difference]: Finished difference. Result has 170 places, 163 transitions, 1070 flow [2024-10-12 00:09:26,191 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1070, PETRI_PLACES=170, PETRI_TRANSITIONS=163} [2024-10-12 00:09:26,191 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 70 predicate places. [2024-10-12 00:09:26,192 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 163 transitions, 1070 flow [2024-10-12 00:09:26,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.23809523809524) internal successors, (1055), 21 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:26,192 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:26,192 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:26,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-12 00:09:26,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-12 00:09:26,397 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:26,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:26,398 INFO L85 PathProgramCache]: Analyzing trace with hash 221001158, now seen corresponding path program 1 times [2024-10-12 00:09:26,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:26,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396184493] [2024-10-12 00:09:26,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:26,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:26,524 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:09:26,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:26,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396184493] [2024-10-12 00:09:26,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396184493] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:26,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962046049] [2024-10-12 00:09:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:26,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:26,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:26,527 INFO L229 MonitoredProcess]: Starting monitored process 12 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 00:09:26,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-12 00:09:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:26,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 00:09:26,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:26,711 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:09:26,712 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:26,787 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:09:26,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962046049] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:26,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:26,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-12 00:09:26,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336312463] [2024-10-12 00:09:26,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:26,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-12 00:09:26,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:26,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-12 00:09:26,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-12 00:09:26,857 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-10-12 00:09:26,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 163 transitions, 1070 flow. Second operand has 15 states, 15 states have (on average 51.0) internal successors, (765), 15 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:26,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:26,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-10-12 00:09:26,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:27,480 INFO L124 PetriNetUnfolderBase]: 2034/4177 cut-off events. [2024-10-12 00:09:27,480 INFO L125 PetriNetUnfolderBase]: For 1620/1717 co-relation queries the response was YES. [2024-10-12 00:09:27,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8815 conditions, 4177 events. 2034/4177 cut-off events. For 1620/1717 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 30667 event pairs, 1376 based on Foata normal form. 38/3393 useless extension candidates. Maximal degree in co-relation 8763. Up to 2398 conditions per place. [2024-10-12 00:09:27,506 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 102 selfloop transitions, 62 changer transitions 0/207 dead transitions. [2024-10-12 00:09:27,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 207 transitions, 1571 flow [2024-10-12 00:09:27,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-12 00:09:27,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-12 00:09:27,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 646 transitions. [2024-10-12 00:09:27,509 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5593073593073593 [2024-10-12 00:09:27,509 INFO L175 Difference]: Start difference. First operand has 170 places, 163 transitions, 1070 flow. Second operand 11 states and 646 transitions. [2024-10-12 00:09:27,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 207 transitions, 1571 flow [2024-10-12 00:09:27,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 207 transitions, 1385 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-10-12 00:09:27,522 INFO L231 Difference]: Finished difference. Result has 171 places, 165 transitions, 1029 flow [2024-10-12 00:09:27,522 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1029, PETRI_PLACES=171, PETRI_TRANSITIONS=165} [2024-10-12 00:09:27,523 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 71 predicate places. [2024-10-12 00:09:27,523 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 165 transitions, 1029 flow [2024-10-12 00:09:27,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 51.0) internal successors, (765), 15 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:27,524 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:27,524 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:27,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-12 00:09:27,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-12 00:09:27,725 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:27,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:27,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1981412927, now seen corresponding path program 1 times [2024-10-12 00:09:27,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:27,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480711601] [2024-10-12 00:09:27,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:27,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:09:27,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:27,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480711601] [2024-10-12 00:09:27,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480711601] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:27,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:27,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:09:27,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101703306] [2024-10-12 00:09:27,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:27,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:09:27,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:27,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:09:27,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:09:27,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 105 [2024-10-12 00:09:27,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 165 transitions, 1029 flow. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:27,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:27,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 105 [2024-10-12 00:09:27,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:28,824 INFO L124 PetriNetUnfolderBase]: 4681/8320 cut-off events. [2024-10-12 00:09:28,824 INFO L125 PetriNetUnfolderBase]: For 5671/5961 co-relation queries the response was YES. [2024-10-12 00:09:28,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19322 conditions, 8320 events. 4681/8320 cut-off events. For 5671/5961 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 57964 event pairs, 2384 based on Foata normal form. 153/6831 useless extension candidates. Maximal degree in co-relation 19238. Up to 4300 conditions per place. [2024-10-12 00:09:28,881 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 183 selfloop transitions, 3 changer transitions 0/226 dead transitions. [2024-10-12 00:09:28,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 226 transitions, 1642 flow [2024-10-12 00:09:28,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:09:28,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:09:28,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2024-10-12 00:09:28,883 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7238095238095238 [2024-10-12 00:09:28,883 INFO L175 Difference]: Start difference. First operand has 171 places, 165 transitions, 1029 flow. Second operand 4 states and 304 transitions. [2024-10-12 00:09:28,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 226 transitions, 1642 flow [2024-10-12 00:09:28,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 226 transitions, 1525 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-12 00:09:28,898 INFO L231 Difference]: Finished difference. Result has 168 places, 167 transitions, 934 flow [2024-10-12 00:09:28,898 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=934, PETRI_PLACES=168, PETRI_TRANSITIONS=167} [2024-10-12 00:09:28,899 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 68 predicate places. [2024-10-12 00:09:28,899 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 167 transitions, 934 flow [2024-10-12 00:09:28,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 4 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:28,899 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:28,900 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:28,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 00:09:28,900 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:28,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:28,900 INFO L85 PathProgramCache]: Analyzing trace with hash -2061348615, now seen corresponding path program 1 times [2024-10-12 00:09:28,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:28,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399692796] [2024-10-12 00:09:28,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:28,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:28,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:29,694 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:09:29,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:29,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399692796] [2024-10-12 00:09:29,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399692796] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:29,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141474232] [2024-10-12 00:09:29,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:29,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:29,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:29,698 INFO L229 MonitoredProcess]: Starting monitored process 13 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 00:09:29,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-12 00:09:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:29,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-12 00:09:29,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:29,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-12 00:09:29,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-12 00:09:29,919 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-12 00:09:29,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-12 00:09:29,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-10-12 00:09:29,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-10-12 00:09:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 00:09:30,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:30,188 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:09:30,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-10-12 00:09:30,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:09:30,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 37 [2024-10-12 00:09:30,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-12 00:09:30,315 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 00:09:30,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141474232] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:30,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:30,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 27 [2024-10-12 00:09:30,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809438244] [2024-10-12 00:09:30,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:30,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-12 00:09:30,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:30,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-12 00:09:30,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=673, Unknown=7, NotChecked=0, Total=756 [2024-10-12 00:09:30,654 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 105 [2024-10-12 00:09:30,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 167 transitions, 934 flow. Second operand has 28 states, 28 states have (on average 45.964285714285715) internal successors, (1287), 28 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:30,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:30,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 105 [2024-10-12 00:09:30,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:32,798 INFO L124 PetriNetUnfolderBase]: 7312/11881 cut-off events. [2024-10-12 00:09:32,798 INFO L125 PetriNetUnfolderBase]: For 9753/11011 co-relation queries the response was YES. [2024-10-12 00:09:32,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30460 conditions, 11881 events. 7312/11881 cut-off events. For 9753/11011 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 77319 event pairs, 1863 based on Foata normal form. 243/9368 useless extension candidates. Maximal degree in co-relation 30379. Up to 3441 conditions per place. [2024-10-12 00:09:32,884 INFO L140 encePairwiseOnDemand]: 85/105 looper letters, 177 selfloop transitions, 61 changer transitions 0/276 dead transitions. [2024-10-12 00:09:32,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 276 transitions, 1867 flow [2024-10-12 00:09:32,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-12 00:09:32,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-10-12 00:09:32,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1020 transitions. [2024-10-12 00:09:32,887 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-10-12 00:09:32,888 INFO L175 Difference]: Start difference. First operand has 168 places, 167 transitions, 934 flow. Second operand 20 states and 1020 transitions. [2024-10-12 00:09:32,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 276 transitions, 1867 flow [2024-10-12 00:09:32,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 276 transitions, 1857 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:09:32,907 INFO L231 Difference]: Finished difference. Result has 188 places, 178 transitions, 1155 flow [2024-10-12 00:09:32,908 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1155, PETRI_PLACES=188, PETRI_TRANSITIONS=178} [2024-10-12 00:09:32,908 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 88 predicate places. [2024-10-12 00:09:32,908 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 178 transitions, 1155 flow [2024-10-12 00:09:32,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 45.964285714285715) internal successors, (1287), 28 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:32,909 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:32,910 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:32,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-12 00:09:33,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:33,110 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:33,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:33,111 INFO L85 PathProgramCache]: Analyzing trace with hash -2061348614, now seen corresponding path program 1 times [2024-10-12 00:09:33,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:33,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455329080] [2024-10-12 00:09:33,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:33,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:33,963 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:09:33,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:33,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455329080] [2024-10-12 00:09:33,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455329080] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:33,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818753107] [2024-10-12 00:09:33,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:33,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:33,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:33,966 INFO L229 MonitoredProcess]: Starting monitored process 14 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 00:09:33,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-12 00:09:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:34,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-12 00:09:34,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:34,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-12 00:09:34,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-12 00:09:34,208 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-12 00:09:34,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-12 00:09:34,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-12 00:09:34,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-12 00:09:34,315 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-12 00:09:34,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:34,370 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_426 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_426) c_~B~0.base) (+ 4 c_~B~0.offset)) 4294967296)) is different from false [2024-10-12 00:09:34,424 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:09:34,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-10-12 00:09:34,436 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:09:34,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 31 [2024-10-12 00:09:34,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-12 00:09:34,552 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 4 not checked. [2024-10-12 00:09:34,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818753107] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:34,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:34,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 27 [2024-10-12 00:09:34,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755979710] [2024-10-12 00:09:34,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:34,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-12 00:09:34,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:34,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-12 00:09:34,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=624, Unknown=1, NotChecked=50, Total=756 [2024-10-12 00:09:34,587 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 105 [2024-10-12 00:09:34,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 178 transitions, 1155 flow. Second operand has 28 states, 28 states have (on average 45.964285714285715) internal successors, (1287), 28 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:34,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:34,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 105 [2024-10-12 00:09:34,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:36,987 INFO L124 PetriNetUnfolderBase]: 7004/11602 cut-off events. [2024-10-12 00:09:36,988 INFO L125 PetriNetUnfolderBase]: For 11913/12956 co-relation queries the response was YES. [2024-10-12 00:09:37,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32782 conditions, 11602 events. 7004/11602 cut-off events. For 11913/12956 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 76661 event pairs, 1898 based on Foata normal form. 191/9533 useless extension candidates. Maximal degree in co-relation 32697. Up to 3227 conditions per place. [2024-10-12 00:09:37,076 INFO L140 encePairwiseOnDemand]: 85/105 looper letters, 159 selfloop transitions, 61 changer transitions 0/258 dead transitions. [2024-10-12 00:09:37,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 258 transitions, 1916 flow [2024-10-12 00:09:37,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-12 00:09:37,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-12 00:09:37,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 961 transitions. [2024-10-12 00:09:37,079 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4817042606516291 [2024-10-12 00:09:37,079 INFO L175 Difference]: Start difference. First operand has 188 places, 178 transitions, 1155 flow. Second operand 19 states and 961 transitions. [2024-10-12 00:09:37,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 258 transitions, 1916 flow [2024-10-12 00:09:37,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 258 transitions, 1860 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-12 00:09:37,105 INFO L231 Difference]: Finished difference. Result has 201 places, 177 transitions, 1217 flow [2024-10-12 00:09:37,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1217, PETRI_PLACES=201, PETRI_TRANSITIONS=177} [2024-10-12 00:09:37,106 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 101 predicate places. [2024-10-12 00:09:37,106 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 177 transitions, 1217 flow [2024-10-12 00:09:37,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 45.964285714285715) internal successors, (1287), 28 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:37,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:37,107 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:37,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-12 00:09:37,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:37,308 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:37,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:37,309 INFO L85 PathProgramCache]: Analyzing trace with hash -2061348612, now seen corresponding path program 2 times [2024-10-12 00:09:37,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:37,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706560745] [2024-10-12 00:09:37,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:37,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:38,001 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:09:38,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:38,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706560745] [2024-10-12 00:09:38,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706560745] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:38,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957126773] [2024-10-12 00:09:38,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:09:38,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:38,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:38,004 INFO L229 MonitoredProcess]: Starting monitored process 15 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 00:09:38,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-12 00:09:38,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:09:38,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:09:38,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-10-12 00:09:38,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:38,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-12 00:09:38,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-12 00:09:38,270 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-12 00:09:38,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-12 00:09:38,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-12 00:09:38,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-12 00:09:38,346 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-10-12 00:09:38,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2024-10-12 00:09:38,430 INFO L349 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2024-10-12 00:09:38,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-10-12 00:09:38,513 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-12 00:09:38,513 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:38,649 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:09:38,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2024-10-12 00:09:38,655 WARN L851 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| Int) (v_arrayElimArr_7 (Array Int Int))) (or (< (+ (select v_arrayElimArr_7 (+ (* 4 |c_ULTIMATE.start_create_fresh_int_array_~i~3#1|) 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483648) 0) (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_arrayElimArr_7) c_~A~0.base) (+ c_~A~0.offset 4)))))) is different from false [2024-10-12 00:09:38,664 WARN L851 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| Int) (v_arrayElimArr_7 (Array Int Int))) (or (< 0 (+ 2147483649 (select (select (store |c_#memory_int#1| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_arrayElimArr_7) c_~A~0.base) (+ c_~A~0.offset 4)))) (< (+ 2147483648 (select v_arrayElimArr_7 4)) 0))) is different from false [2024-10-12 00:09:38,684 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_7 (Array Int Int)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_242| Int) (v_ArrVal_467 (Array Int Int))) (or (< 0 (+ 2147483649 (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_467) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_242| v_arrayElimArr_7) c_~A~0.base) (+ c_~A~0.offset 4)))) (< (+ 2147483648 (select v_arrayElimArr_7 4)) 0))) is different from false [2024-10-12 00:09:38,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:09:38,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-10-12 00:09:38,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:09:38,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 75 [2024-10-12 00:09:38,797 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:09:38,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 67 [2024-10-12 00:09:38,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-10-12 00:09:38,998 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2024-10-12 00:09:38,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957126773] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:38,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:38,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 27 [2024-10-12 00:09:38,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824129527] [2024-10-12 00:09:38,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:39,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-12 00:09:39,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:39,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-12 00:09:39,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=562, Unknown=3, NotChecked=150, Total=812 [2024-10-12 00:09:39,021 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 105 [2024-10-12 00:09:39,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 177 transitions, 1217 flow. Second operand has 29 states, 29 states have (on average 46.827586206896555) internal successors, (1358), 29 states have internal predecessors, (1358), 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 00:09:39,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:39,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 105 [2024-10-12 00:09:39,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:40,926 INFO L124 PetriNetUnfolderBase]: 5352/9247 cut-off events. [2024-10-12 00:09:40,927 INFO L125 PetriNetUnfolderBase]: For 11390/12278 co-relation queries the response was YES. [2024-10-12 00:09:40,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27024 conditions, 9247 events. 5352/9247 cut-off events. For 11390/12278 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 62124 event pairs, 2587 based on Foata normal form. 178/8070 useless extension candidates. Maximal degree in co-relation 26938. Up to 4555 conditions per place. [2024-10-12 00:09:40,988 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 160 selfloop transitions, 55 changer transitions 0/254 dead transitions. [2024-10-12 00:09:40,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 254 transitions, 1962 flow [2024-10-12 00:09:40,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 00:09:40,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-12 00:09:40,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 799 transitions. [2024-10-12 00:09:40,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5073015873015873 [2024-10-12 00:09:40,991 INFO L175 Difference]: Start difference. First operand has 201 places, 177 transitions, 1217 flow. Second operand 15 states and 799 transitions. [2024-10-12 00:09:40,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 254 transitions, 1962 flow [2024-10-12 00:09:41,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 254 transitions, 1860 flow, removed 0 selfloop flow, removed 17 redundant places. [2024-10-12 00:09:41,013 INFO L231 Difference]: Finished difference. Result has 198 places, 176 transitions, 1221 flow [2024-10-12 00:09:41,013 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1221, PETRI_PLACES=198, PETRI_TRANSITIONS=176} [2024-10-12 00:09:41,014 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 98 predicate places. [2024-10-12 00:09:41,014 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 176 transitions, 1221 flow [2024-10-12 00:09:41,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 46.827586206896555) internal successors, (1358), 29 states have internal predecessors, (1358), 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 00:09:41,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:41,015 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:41,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-12 00:09:41,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-12 00:09:41,220 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:41,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:41,220 INFO L85 PathProgramCache]: Analyzing trace with hash -2061348611, now seen corresponding path program 1 times [2024-10-12 00:09:41,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:41,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187147968] [2024-10-12 00:09:41,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:41,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:41,809 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:09:41,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:41,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187147968] [2024-10-12 00:09:41,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187147968] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:41,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140272307] [2024-10-12 00:09:41,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:41,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:41,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:41,812 INFO L229 MonitoredProcess]: Starting monitored process 16 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 00:09:41,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-12 00:09:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:41,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-10-12 00:09:41,958 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:41,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-12 00:09:42,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-12 00:09:42,050 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-12 00:09:42,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-10-12 00:09:42,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-12 00:09:42,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-12 00:09:42,127 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-12 00:09:42,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-12 00:09:42,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-12 00:09:42,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-12 00:09:42,224 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-12 00:09:42,224 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:42,291 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_513 (Array Int Int))) (< (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_513) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483648)) is different from false [2024-10-12 00:09:42,522 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:09:42,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2024-10-12 00:09:42,532 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-12 00:09:42,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 141 treesize of output 129 [2024-10-12 00:09:42,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2024-10-12 00:09:42,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2024-10-12 00:09:42,807 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 4 not checked. [2024-10-12 00:09:42,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140272307] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:42,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:42,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2024-10-12 00:09:42,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079198061] [2024-10-12 00:09:42,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:42,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-12 00:09:42,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:42,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-12 00:09:42,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=608, Unknown=2, NotChecked=50, Total=756 [2024-10-12 00:09:42,822 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 105 [2024-10-12 00:09:42,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 176 transitions, 1221 flow. Second operand has 28 states, 28 states have (on average 47.0) internal successors, (1316), 28 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:42,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:42,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 105 [2024-10-12 00:09:42,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:44,676 INFO L124 PetriNetUnfolderBase]: 5088/8880 cut-off events. [2024-10-12 00:09:44,676 INFO L125 PetriNetUnfolderBase]: For 11946/12789 co-relation queries the response was YES. [2024-10-12 00:09:44,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25720 conditions, 8880 events. 5088/8880 cut-off events. For 11946/12789 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 59574 event pairs, 2548 based on Foata normal form. 165/7925 useless extension candidates. Maximal degree in co-relation 25633. Up to 4555 conditions per place. [2024-10-12 00:09:44,735 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 159 selfloop transitions, 55 changer transitions 0/253 dead transitions. [2024-10-12 00:09:44,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 253 transitions, 1964 flow [2024-10-12 00:09:44,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-12 00:09:44,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-12 00:09:44,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 798 transitions. [2024-10-12 00:09:44,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-10-12 00:09:44,739 INFO L175 Difference]: Start difference. First operand has 198 places, 176 transitions, 1221 flow. Second operand 15 states and 798 transitions. [2024-10-12 00:09:44,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 253 transitions, 1964 flow [2024-10-12 00:09:44,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 253 transitions, 1845 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-10-12 00:09:44,753 INFO L231 Difference]: Finished difference. Result has 199 places, 175 transitions, 1208 flow [2024-10-12 00:09:44,753 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1208, PETRI_PLACES=199, PETRI_TRANSITIONS=175} [2024-10-12 00:09:44,754 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 99 predicate places. [2024-10-12 00:09:44,754 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 175 transitions, 1208 flow [2024-10-12 00:09:44,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 47.0) internal successors, (1316), 28 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:44,755 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:44,755 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:44,768 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-12 00:09:44,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:44,955 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:44,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:44,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1001792412, now seen corresponding path program 2 times [2024-10-12 00:09:44,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:44,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872188805] [2024-10-12 00:09:44,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:44,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:45,056 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 00:09:45,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:45,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872188805] [2024-10-12 00:09:45,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872188805] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:45,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570378247] [2024-10-12 00:09:45,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:09:45,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:45,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:45,059 INFO L229 MonitoredProcess]: Starting monitored process 17 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 00:09:45,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-12 00:09:45,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:09:45,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:09:45,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:09:45,211 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:45,237 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 00:09:45,237 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-12 00:09:45,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570378247] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:45,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-12 00:09:45,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-10-12 00:09:45,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663142068] [2024-10-12 00:09:45,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:45,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:09:45,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:45,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:09:45,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-12 00:09:45,243 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 105 [2024-10-12 00:09:45,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 175 transitions, 1208 flow. Second operand has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 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 00:09:45,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:45,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 105 [2024-10-12 00:09:45,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:46,355 INFO L124 PetriNetUnfolderBase]: 5465/9056 cut-off events. [2024-10-12 00:09:46,356 INFO L125 PetriNetUnfolderBase]: For 13784/14531 co-relation queries the response was YES. [2024-10-12 00:09:46,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27419 conditions, 9056 events. 5465/9056 cut-off events. For 13784/14531 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 59913 event pairs, 1201 based on Foata normal form. 410/8075 useless extension candidates. Maximal degree in co-relation 27336. Up to 3400 conditions per place. [2024-10-12 00:09:46,393 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 174 selfloop transitions, 9 changer transitions 0/224 dead transitions. [2024-10-12 00:09:46,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 224 transitions, 1848 flow [2024-10-12 00:09:46,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:09:46,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:09:46,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 296 transitions. [2024-10-12 00:09:46,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7047619047619048 [2024-10-12 00:09:46,394 INFO L175 Difference]: Start difference. First operand has 199 places, 175 transitions, 1208 flow. Second operand 4 states and 296 transitions. [2024-10-12 00:09:46,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 224 transitions, 1848 flow [2024-10-12 00:09:46,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 224 transitions, 1721 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-10-12 00:09:46,410 INFO L231 Difference]: Finished difference. Result has 188 places, 174 transitions, 1113 flow [2024-10-12 00:09:46,410 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1113, PETRI_PLACES=188, PETRI_TRANSITIONS=174} [2024-10-12 00:09:46,410 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 88 predicate places. [2024-10-12 00:09:46,411 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 174 transitions, 1113 flow [2024-10-12 00:09:46,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 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 00:09:46,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:46,411 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:46,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-10-12 00:09:46,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-12 00:09:46,612 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:46,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:46,612 INFO L85 PathProgramCache]: Analyzing trace with hash -976053663, now seen corresponding path program 1 times [2024-10-12 00:09:46,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:46,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417227967] [2024-10-12 00:09:46,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:46,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:46,683 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 00:09:46,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:46,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417227967] [2024-10-12 00:09:46,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417227967] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:46,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:46,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:09:46,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708640916] [2024-10-12 00:09:46,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:46,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:09:46,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:46,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:09:46,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:09:46,692 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 105 [2024-10-12 00:09:46,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 174 transitions, 1113 flow. Second operand has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:46,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:46,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 105 [2024-10-12 00:09:46,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:47,437 INFO L124 PetriNetUnfolderBase]: 5020/8348 cut-off events. [2024-10-12 00:09:47,438 INFO L125 PetriNetUnfolderBase]: For 14654/15319 co-relation queries the response was YES. [2024-10-12 00:09:47,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26725 conditions, 8348 events. 5020/8348 cut-off events. For 14654/15319 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 53904 event pairs, 3105 based on Foata normal form. 405/7938 useless extension candidates. Maximal degree in co-relation 26644. Up to 5693 conditions per place. [2024-10-12 00:09:47,493 INFO L140 encePairwiseOnDemand]: 99/105 looper letters, 161 selfloop transitions, 8 changer transitions 0/209 dead transitions. [2024-10-12 00:09:47,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 209 transitions, 1625 flow [2024-10-12 00:09:47,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:09:47,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:09:47,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 288 transitions. [2024-10-12 00:09:47,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-10-12 00:09:47,494 INFO L175 Difference]: Start difference. First operand has 188 places, 174 transitions, 1113 flow. Second operand 4 states and 288 transitions. [2024-10-12 00:09:47,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 209 transitions, 1625 flow [2024-10-12 00:09:47,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 209 transitions, 1575 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:09:47,509 INFO L231 Difference]: Finished difference. Result has 190 places, 175 transitions, 1128 flow [2024-10-12 00:09:47,509 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1128, PETRI_PLACES=190, PETRI_TRANSITIONS=175} [2024-10-12 00:09:47,510 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 90 predicate places. [2024-10-12 00:09:47,510 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 175 transitions, 1128 flow [2024-10-12 00:09:47,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:47,510 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:47,510 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:47,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-10-12 00:09:47,511 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:47,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:47,511 INFO L85 PathProgramCache]: Analyzing trace with hash -990792584, now seen corresponding path program 1 times [2024-10-12 00:09:47,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:47,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018739153] [2024-10-12 00:09:47,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:47,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:47,584 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 00:09:47,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:47,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018739153] [2024-10-12 00:09:47,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018739153] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:47,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867258768] [2024-10-12 00:09:47,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:47,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:47,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:47,587 INFO L229 MonitoredProcess]: Starting monitored process 18 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 00:09:47,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-12 00:09:47,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:47,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-12 00:09:47,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 00:09:47,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:47,794 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-12 00:09:47,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867258768] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:47,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:47,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-12 00:09:47,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224100333] [2024-10-12 00:09:47,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:47,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-12 00:09:47,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:47,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:09:47,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:09:47,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 105 [2024-10-12 00:09:47,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 175 transitions, 1128 flow. Second operand has 12 states, 12 states have (on average 55.25) internal successors, (663), 12 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:47,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:47,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 105 [2024-10-12 00:09:47,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:49,276 INFO L124 PetriNetUnfolderBase]: 7997/13114 cut-off events. [2024-10-12 00:09:49,276 INFO L125 PetriNetUnfolderBase]: For 19240/20435 co-relation queries the response was YES. [2024-10-12 00:09:49,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39884 conditions, 13114 events. 7997/13114 cut-off events. For 19240/20435 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 89367 event pairs, 1891 based on Foata normal form. 312/11345 useless extension candidates. Maximal degree in co-relation 39801. Up to 5262 conditions per place. [2024-10-12 00:09:49,388 INFO L140 encePairwiseOnDemand]: 100/105 looper letters, 314 selfloop transitions, 15 changer transitions 0/372 dead transitions. [2024-10-12 00:09:49,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 372 transitions, 2832 flow [2024-10-12 00:09:49,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-12 00:09:49,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-12 00:09:49,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 745 transitions. [2024-10-12 00:09:49,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7095238095238096 [2024-10-12 00:09:49,390 INFO L175 Difference]: Start difference. First operand has 190 places, 175 transitions, 1128 flow. Second operand 10 states and 745 transitions. [2024-10-12 00:09:49,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 372 transitions, 2832 flow [2024-10-12 00:09:49,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 372 transitions, 2797 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:09:49,410 INFO L231 Difference]: Finished difference. Result has 201 places, 184 transitions, 1205 flow [2024-10-12 00:09:49,411 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1205, PETRI_PLACES=201, PETRI_TRANSITIONS=184} [2024-10-12 00:09:49,411 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 101 predicate places. [2024-10-12 00:09:49,411 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 184 transitions, 1205 flow [2024-10-12 00:09:49,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 55.25) internal successors, (663), 12 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:49,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:49,412 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:49,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-10-12 00:09:49,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:49,616 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:49,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:49,616 INFO L85 PathProgramCache]: Analyzing trace with hash -406020370, now seen corresponding path program 1 times [2024-10-12 00:09:49,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:49,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582528354] [2024-10-12 00:09:49,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:49,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:49,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:09:49,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:49,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582528354] [2024-10-12 00:09:49,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582528354] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:09:49,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:09:49,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:09:49,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148880937] [2024-10-12 00:09:49,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:09:49,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:09:49,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:49,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:09:49,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:09:49,844 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 105 [2024-10-12 00:09:49,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 184 transitions, 1205 flow. Second operand has 6 states, 6 states have (on average 48.333333333333336) internal successors, (290), 6 states have internal predecessors, (290), 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 00:09:49,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:49,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 105 [2024-10-12 00:09:49,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:09:53,065 INFO L124 PetriNetUnfolderBase]: 14924/24914 cut-off events. [2024-10-12 00:09:53,066 INFO L125 PetriNetUnfolderBase]: For 47453/49636 co-relation queries the response was YES. [2024-10-12 00:09:53,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83521 conditions, 24914 events. 14924/24914 cut-off events. For 47453/49636 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 192729 event pairs, 11364 based on Foata normal form. 595/23082 useless extension candidates. Maximal degree in co-relation 83435. Up to 10246 conditions per place. [2024-10-12 00:09:53,324 INFO L140 encePairwiseOnDemand]: 95/105 looper letters, 183 selfloop transitions, 18 changer transitions 0/238 dead transitions. [2024-10-12 00:09:53,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 238 transitions, 1937 flow [2024-10-12 00:09:53,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:09:53,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:09:53,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 306 transitions. [2024-10-12 00:09:53,326 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5828571428571429 [2024-10-12 00:09:53,326 INFO L175 Difference]: Start difference. First operand has 201 places, 184 transitions, 1205 flow. Second operand 5 states and 306 transitions. [2024-10-12 00:09:53,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 238 transitions, 1937 flow [2024-10-12 00:09:53,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 238 transitions, 1869 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-10-12 00:09:53,472 INFO L231 Difference]: Finished difference. Result has 203 places, 186 transitions, 1237 flow [2024-10-12 00:09:53,472 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1237, PETRI_PLACES=203, PETRI_TRANSITIONS=186} [2024-10-12 00:09:53,473 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 103 predicate places. [2024-10-12 00:09:53,473 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 186 transitions, 1237 flow [2024-10-12 00:09:53,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.333333333333336) internal successors, (290), 6 states have internal predecessors, (290), 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 00:09:53,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:09:53,473 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:09:53,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-10-12 00:09:53,474 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:09:53,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:09:53,474 INFO L85 PathProgramCache]: Analyzing trace with hash -684955920, now seen corresponding path program 1 times [2024-10-12 00:09:53,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:09:53,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326332679] [2024-10-12 00:09:53,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:53,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:09:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:53,695 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 00:09:53,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:09:53,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326332679] [2024-10-12 00:09:53,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326332679] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:09:53,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366094288] [2024-10-12 00:09:53,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:09:53,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:09:53,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:09:53,699 INFO L229 MonitoredProcess]: Starting monitored process 19 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 00:09:53,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-12 00:09:53,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:09:53,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-12 00:09:53,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:09:54,023 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 00:09:54,024 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:09:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-12 00:09:54,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366094288] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:09:54,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:09:54,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2024-10-12 00:09:54,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309777742] [2024-10-12 00:09:54,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:09:54,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-12 00:09:54,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:09:54,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-12 00:09:54,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2024-10-12 00:09:54,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 105 [2024-10-12 00:09:54,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 186 transitions, 1237 flow. Second operand has 26 states, 26 states have (on average 46.84615384615385) internal successors, (1218), 26 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:09:54,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:09:54,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 105 [2024-10-12 00:09:54,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:10:00,201 INFO L124 PetriNetUnfolderBase]: 29572/47428 cut-off events. [2024-10-12 00:10:00,202 INFO L125 PetriNetUnfolderBase]: For 68120/70880 co-relation queries the response was YES. [2024-10-12 00:10:00,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143066 conditions, 47428 events. 29572/47428 cut-off events. For 68120/70880 co-relation queries the response was YES. Maximal size of possible extension queue 1203. Compared 364354 event pairs, 17624 based on Foata normal form. 1320/45236 useless extension candidates. Maximal degree in co-relation 142977. Up to 27414 conditions per place. [2024-10-12 00:10:00,698 INFO L140 encePairwiseOnDemand]: 90/105 looper letters, 205 selfloop transitions, 76 changer transitions 0/320 dead transitions. [2024-10-12 00:10:00,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 320 transitions, 2433 flow [2024-10-12 00:10:00,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-12 00:10:00,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-12 00:10:00,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 923 transitions. [2024-10-12 00:10:00,700 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5170868347338936 [2024-10-12 00:10:00,701 INFO L175 Difference]: Start difference. First operand has 203 places, 186 transitions, 1237 flow. Second operand 17 states and 923 transitions. [2024-10-12 00:10:00,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 320 transitions, 2433 flow [2024-10-12 00:10:00,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 320 transitions, 2425 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:10:00,964 INFO L231 Difference]: Finished difference. Result has 222 places, 191 transitions, 1463 flow [2024-10-12 00:10:00,964 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1232, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1463, PETRI_PLACES=222, PETRI_TRANSITIONS=191} [2024-10-12 00:10:00,964 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 122 predicate places. [2024-10-12 00:10:00,965 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 191 transitions, 1463 flow [2024-10-12 00:10:00,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 46.84615384615385) internal successors, (1218), 26 states have internal predecessors, (1218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:10:00,965 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:10:00,965 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:10:00,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-12 00:10:01,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-10-12 00:10:01,166 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:10:01,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:10:01,166 INFO L85 PathProgramCache]: Analyzing trace with hash -615621661, now seen corresponding path program 1 times [2024-10-12 00:10:01,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:10:01,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71008363] [2024-10-12 00:10:01,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:10:01,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:10:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:10:01,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:10:01,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:10:01,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71008363] [2024-10-12 00:10:01,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71008363] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:10:01,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:10:01,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-12 00:10:01,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715477623] [2024-10-12 00:10:01,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:10:01,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-12 00:10:01,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:10:01,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-12 00:10:01,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-10-12 00:10:01,372 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 105 [2024-10-12 00:10:01,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 191 transitions, 1463 flow. Second operand has 7 states, 7 states have (on average 47.714285714285715) internal successors, (334), 7 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:10:01,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:10:01,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 105 [2024-10-12 00:10:01,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:10:06,573 INFO L124 PetriNetUnfolderBase]: 24136/40339 cut-off events. [2024-10-12 00:10:06,574 INFO L125 PetriNetUnfolderBase]: For 99372/103901 co-relation queries the response was YES. [2024-10-12 00:10:06,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134654 conditions, 40339 events. 24136/40339 cut-off events. For 99372/103901 co-relation queries the response was YES. Maximal size of possible extension queue 1159. Compared 329608 event pairs, 6924 based on Foata normal form. 1261/38477 useless extension candidates. Maximal degree in co-relation 134551. Up to 25345 conditions per place. [2024-10-12 00:10:06,848 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 177 selfloop transitions, 29 changer transitions 0/243 dead transitions. [2024-10-12 00:10:06,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 243 transitions, 2228 flow [2024-10-12 00:10:06,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:10:06,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:10:06,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 348 transitions. [2024-10-12 00:10:06,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5523809523809524 [2024-10-12 00:10:06,850 INFO L175 Difference]: Start difference. First operand has 222 places, 191 transitions, 1463 flow. Second operand 6 states and 348 transitions. [2024-10-12 00:10:06,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 243 transitions, 2228 flow [2024-10-12 00:10:07,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 243 transitions, 2088 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-10-12 00:10:07,407 INFO L231 Difference]: Finished difference. Result has 219 places, 200 transitions, 1506 flow [2024-10-12 00:10:07,408 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1506, PETRI_PLACES=219, PETRI_TRANSITIONS=200} [2024-10-12 00:10:07,408 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 119 predicate places. [2024-10-12 00:10:07,408 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 200 transitions, 1506 flow [2024-10-12 00:10:07,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 47.714285714285715) internal successors, (334), 7 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:10:07,409 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:10:07,409 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:10:07,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-10-12 00:10:07,409 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:10:07,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:10:07,409 INFO L85 PathProgramCache]: Analyzing trace with hash 285675810, now seen corresponding path program 1 times [2024-10-12 00:10:07,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:10:07,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859447664] [2024-10-12 00:10:07,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:10:07,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:10:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:10:07,517 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 00:10:07,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:10:07,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859447664] [2024-10-12 00:10:07,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859447664] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:10:07,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169886904] [2024-10-12 00:10:07,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:10:07,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:10:07,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:10:07,520 INFO L229 MonitoredProcess]: Starting monitored process 20 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 00:10:07,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-12 00:10:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:10:07,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-12 00:10:07,657 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:10:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 00:10:07,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:10:07,802 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-12 00:10:07,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169886904] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:10:07,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:10:07,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-10-12 00:10:07,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269066985] [2024-10-12 00:10:07,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:10:07,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-12 00:10:07,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:10:07,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-12 00:10:07,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-10-12 00:10:07,899 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 105 [2024-10-12 00:10:07,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 200 transitions, 1506 flow. Second operand has 15 states, 15 states have (on average 50.333333333333336) internal successors, (755), 15 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:10:07,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:10:07,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 105 [2024-10-12 00:10:07,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:10:14,109 INFO L124 PetriNetUnfolderBase]: 28968/48079 cut-off events. [2024-10-12 00:10:14,109 INFO L125 PetriNetUnfolderBase]: For 117185/120990 co-relation queries the response was YES. [2024-10-12 00:10:14,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158482 conditions, 48079 events. 28968/48079 cut-off events. For 117185/120990 co-relation queries the response was YES. Maximal size of possible extension queue 1261. Compared 389381 event pairs, 17158 based on Foata normal form. 1267/43255 useless extension candidates. Maximal degree in co-relation 158382. Up to 30401 conditions per place. [2024-10-12 00:10:14,553 INFO L140 encePairwiseOnDemand]: 92/105 looper letters, 169 selfloop transitions, 65 changer transitions 0/281 dead transitions. [2024-10-12 00:10:14,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 281 transitions, 2534 flow [2024-10-12 00:10:14,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 00:10:14,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-12 00:10:14,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 695 transitions. [2024-10-12 00:10:14,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5515873015873016 [2024-10-12 00:10:14,555 INFO L175 Difference]: Start difference. First operand has 219 places, 200 transitions, 1506 flow. Second operand 12 states and 695 transitions. [2024-10-12 00:10:14,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 281 transitions, 2534 flow [2024-10-12 00:10:14,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 281 transitions, 2521 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:10:14,879 INFO L231 Difference]: Finished difference. Result has 232 places, 202 transitions, 1685 flow [2024-10-12 00:10:14,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1685, PETRI_PLACES=232, PETRI_TRANSITIONS=202} [2024-10-12 00:10:14,879 INFO L277 CegarLoopForPetriNet]: 100 programPoint places, 132 predicate places. [2024-10-12 00:10:14,879 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 202 transitions, 1685 flow [2024-10-12 00:10:14,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 50.333333333333336) internal successors, (755), 15 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:10:14,880 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:10:14,880 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:10:14,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-10-12 00:10:15,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-12 00:10:15,081 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2024-10-12 00:10:15,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:10:15,082 INFO L85 PathProgramCache]: Analyzing trace with hash -25106308, now seen corresponding path program 1 times [2024-10-12 00:10:15,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:10:15,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78859660] [2024-10-12 00:10:15,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:10:15,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:10:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:10:15,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-12 00:10:15,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:10:15,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78859660] [2024-10-12 00:10:15,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78859660] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:10:15,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:10:15,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:10:15,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259926768] [2024-10-12 00:10:15,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:10:15,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:10:15,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:10:15,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:10:15,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:10:15,494 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 105 [2024-10-12 00:10:15,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 202 transitions, 1685 flow. Second operand has 6 states, 6 states have (on average 54.166666666666664) internal successors, (325), 6 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:10:15,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:10:15,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 105 [2024-10-12 00:10:15,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand