./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:43:16,016 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:43:16,057 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:43:16,060 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:43:16,061 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:43:16,075 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:43:16,076 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:43:16,077 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:43:16,077 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:43:16,077 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:43:16,078 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:43:16,078 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:43:16,078 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:43:16,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:43:16,079 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:43:16,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:43:16,079 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:43:16,079 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:43:16,079 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:43:16,079 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:43:16,079 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:43:16,080 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:43:16,080 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:43:16,080 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:43:16,080 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:43:16,080 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:43:16,080 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:43:16,080 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:43:16,080 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:43:16,080 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:43:16,080 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:43:16,080 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:43:16,080 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:43:16,081 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:43:16,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:43:16,081 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:43:16,081 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:43:16,081 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:43:16,081 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:43:16,081 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:43:16,081 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:43:16,082 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:43:16,082 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:43:16,082 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:43:16,082 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:43:16,082 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 [2025-03-09 06:43:16,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:43:16,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:43:16,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:43:16,325 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:43:16,326 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:43:16,328 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2025-03-09 06:43:17,481 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e8c18041/dbe263775b48440f83468448662bfdc5/FLAG7932c148a [2025-03-09 06:43:17,692 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:43:17,693 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2025-03-09 06:43:17,724 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e8c18041/dbe263775b48440f83468448662bfdc5/FLAG7932c148a [2025-03-09 06:43:17,750 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e8c18041/dbe263775b48440f83468448662bfdc5 [2025-03-09 06:43:17,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:43:17,754 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:43:17,756 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:43:17,756 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:43:17,760 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:43:17,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:43:17" (1/1) ... [2025-03-09 06:43:17,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@668c0fc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:17, skipping insertion in model container [2025-03-09 06:43:17,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:43:17" (1/1) ... [2025-03-09 06:43:17,779 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:43:17,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:43:17,924 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:43:17,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:43:17,966 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:43:17,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:17 WrapperNode [2025-03-09 06:43:17,967 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:43:17,968 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:43:17,969 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:43:17,969 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:43:17,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:17" (1/1) ... [2025-03-09 06:43:17,977 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:17" (1/1) ... [2025-03-09 06:43:17,998 INFO L138 Inliner]: procedures = 25, calls = 54, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 263 [2025-03-09 06:43:18,000 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:43:18,001 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:43:18,001 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:43:18,001 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:43:18,006 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:17" (1/1) ... [2025-03-09 06:43:18,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:17" (1/1) ... [2025-03-09 06:43:18,008 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:17" (1/1) ... [2025-03-09 06:43:18,017 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-03-09 06:43:18,017 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:17" (1/1) ... [2025-03-09 06:43:18,017 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:17" (1/1) ... [2025-03-09 06:43:18,028 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:17" (1/1) ... [2025-03-09 06:43:18,029 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:17" (1/1) ... [2025-03-09 06:43:18,030 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:17" (1/1) ... [2025-03-09 06:43:18,030 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:17" (1/1) ... [2025-03-09 06:43:18,034 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:43:18,034 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:43:18,034 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:43:18,035 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:43:18,035 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:17" (1/1) ... [2025-03-09 06:43:18,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:43:18,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:18,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 06:43:18,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 06:43:18,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:43:18,080 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-09 06:43:18,081 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-09 06:43:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-09 06:43:18,081 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-09 06:43:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-09 06:43:18,081 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-09 06:43:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-09 06:43:18,081 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-09 06:43:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:43:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-09 06:43:18,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:43:18,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-09 06:43:18,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 06:43:18,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 06:43:18,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-09 06:43:18,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:43:18,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:43:18,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:43:18,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-09 06:43:18,084 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:43:18,167 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:43:18,169 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:43:18,518 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:43:18,518 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:43:18,769 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:43:18,769 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:43:18,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:43:18 BoogieIcfgContainer [2025-03-09 06:43:18,770 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:43:18,772 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:43:18,773 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:43:18,776 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:43:18,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:43:17" (1/3) ... [2025-03-09 06:43:18,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7132f023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:43:18, skipping insertion in model container [2025-03-09 06:43:18,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:43:17" (2/3) ... [2025-03-09 06:43:18,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7132f023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:43:18, skipping insertion in model container [2025-03-09 06:43:18,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:43:18" (3/3) ... [2025-03-09 06:43:18,778 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2025-03-09 06:43:18,789 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:43:18,791 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-prod-cons3.wvr.c that has 5 procedures, 72 locations, 1 initial locations, 5 loop locations, and 22 error locations. [2025-03-09 06:43:18,791 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:43:18,854 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-09 06:43:18,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 182 flow [2025-03-09 06:43:18,919 INFO L124 PetriNetUnfolderBase]: 6/73 cut-off events. [2025-03-09 06:43:18,922 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-09 06:43:18,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 73 events. 6/73 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 245 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2025-03-09 06:43:18,927 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 77 transitions, 182 flow [2025-03-09 06:43:18,929 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 71 transitions, 163 flow [2025-03-09 06:43:18,936 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:43:18,944 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3c13b6d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:43:18,945 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2025-03-09 06:43:18,948 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:43:18,949 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-09 06:43:18,949 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:43:18,949 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:18,950 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 06:43:18,950 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-09 06:43:18,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:18,954 INFO L85 PathProgramCache]: Analyzing trace with hash 738438, now seen corresponding path program 1 times [2025-03-09 06:43:18,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:18,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331119386] [2025-03-09 06:43:18,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:18,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:19,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:43:19,032 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:43:19,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:19,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:19,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:19,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:19,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331119386] [2025-03-09 06:43:19,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331119386] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:19,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:19,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:43:19,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566107095] [2025-03-09 06:43:19,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:19,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:43:19,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:19,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:43:19,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:43:19,158 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-03-09 06:43:19,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2025-03-09 06:43:19,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:19,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-03-09 06:43:19,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:21,879 INFO L124 PetriNetUnfolderBase]: 34047/45567 cut-off events. [2025-03-09 06:43:21,880 INFO L125 PetriNetUnfolderBase]: For 2157/2157 co-relation queries the response was YES. [2025-03-09 06:43:21,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92755 conditions, 45567 events. 34047/45567 cut-off events. For 2157/2157 co-relation queries the response was YES. Maximal size of possible extension queue 2313. Compared 285910 event pairs, 30634 based on Foata normal form. 2/31274 useless extension candidates. Maximal degree in co-relation 87374. Up to 44704 conditions per place. [2025-03-09 06:43:22,187 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 47 selfloop transitions, 6 changer transitions 0/65 dead transitions. [2025-03-09 06:43:22,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 65 transitions, 257 flow [2025-03-09 06:43:22,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:43:22,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:43:22,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2025-03-09 06:43:22,197 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39935064935064934 [2025-03-09 06:43:22,202 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 163 flow. Second operand 4 states and 123 transitions. [2025-03-09 06:43:22,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 65 transitions, 257 flow [2025-03-09 06:43:22,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 65 transitions, 244 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-09 06:43:22,236 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 150 flow [2025-03-09 06:43:22,241 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2025-03-09 06:43:22,244 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -10 predicate places. [2025-03-09 06:43:22,244 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 150 flow [2025-03-09 06:43:22,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2025-03-09 06:43:22,244 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:22,244 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-03-09 06:43:22,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:43:22,245 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-09 06:43:22,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:22,245 INFO L85 PathProgramCache]: Analyzing trace with hash 22892267, now seen corresponding path program 1 times [2025-03-09 06:43:22,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:22,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043265163] [2025-03-09 06:43:22,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:22,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:22,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-09 06:43:22,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-09 06:43:22,279 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:22,279 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:22,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:22,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:22,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043265163] [2025-03-09 06:43:22,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043265163] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:22,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:22,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:43:22,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164054158] [2025-03-09 06:43:22,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:22,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:43:22,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:22,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:43:22,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:43:22,337 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-03-09 06:43:22,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2025-03-09 06:43:22,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:22,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-03-09 06:43:22,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:24,557 INFO L124 PetriNetUnfolderBase]: 34049/45575 cut-off events. [2025-03-09 06:43:24,557 INFO L125 PetriNetUnfolderBase]: For 349/349 co-relation queries the response was YES. [2025-03-09 06:43:24,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92043 conditions, 45575 events. 34049/45575 cut-off events. For 349/349 co-relation queries the response was YES. Maximal size of possible extension queue 2285. Compared 285420 event pairs, 30634 based on Foata normal form. 2/31284 useless extension candidates. Maximal degree in co-relation 91995. Up to 44713 conditions per place. [2025-03-09 06:43:24,911 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 52 selfloop transitions, 7 changer transitions 0/71 dead transitions. [2025-03-09 06:43:24,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 71 transitions, 290 flow [2025-03-09 06:43:24,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:43:24,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:43:24,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2025-03-09 06:43:24,912 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40584415584415584 [2025-03-09 06:43:24,912 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 150 flow. Second operand 4 states and 125 transitions. [2025-03-09 06:43:24,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 71 transitions, 290 flow [2025-03-09 06:43:24,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 71 transitions, 268 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:43:24,919 INFO L231 Difference]: Finished difference. Result has 71 places, 71 transitions, 194 flow [2025-03-09 06:43:24,919 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=71, PETRI_TRANSITIONS=71} [2025-03-09 06:43:24,920 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -7 predicate places. [2025-03-09 06:43:24,920 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 71 transitions, 194 flow [2025-03-09 06:43:24,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2025-03-09 06:43:24,920 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:24,920 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-09 06:43:24,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:43:24,920 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-09 06:43:24,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:24,921 INFO L85 PathProgramCache]: Analyzing trace with hash -915546104, now seen corresponding path program 1 times [2025-03-09 06:43:24,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:24,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638614902] [2025-03-09 06:43:24,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:24,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:24,927 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:43:24,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:43:24,943 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:24,944 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:25,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:25,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:25,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638614902] [2025-03-09 06:43:25,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638614902] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:43:25,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040827272] [2025-03-09 06:43:25,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:25,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:25,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:25,042 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:43:25,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:43:25,087 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:43:25,099 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:43:25,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:25,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:25,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:43:25,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:43:25,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:25,126 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:43:25,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:25,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040827272] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:43:25,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:43:25,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-03-09 06:43:25,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896019959] [2025-03-09 06:43:25,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:43:25,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:43:25,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:25,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:43:25,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:43:25,177 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-03-09 06:43:25,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 71 transitions, 194 flow. Second operand has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 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) [2025-03-09 06:43:25,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:25,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-03-09 06:43:25,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:27,151 INFO L124 PetriNetUnfolderBase]: 34055/45599 cut-off events. [2025-03-09 06:43:27,151 INFO L125 PetriNetUnfolderBase]: For 363/363 co-relation queries the response was YES. [2025-03-09 06:43:27,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92119 conditions, 45599 events. 34055/45599 cut-off events. For 363/363 co-relation queries the response was YES. Maximal size of possible extension queue 2285. Compared 285714 event pairs, 30634 based on Foata normal form. 0/31302 useless extension candidates. Maximal degree in co-relation 92006. Up to 44716 conditions per place. [2025-03-09 06:43:27,439 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 52 selfloop transitions, 25 changer transitions 0/89 dead transitions. [2025-03-09 06:43:27,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 89 transitions, 426 flow [2025-03-09 06:43:27,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:43:27,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:43:27,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2025-03-09 06:43:27,442 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3155844155844156 [2025-03-09 06:43:27,442 INFO L175 Difference]: Start difference. First operand has 71 places, 71 transitions, 194 flow. Second operand 10 states and 243 transitions. [2025-03-09 06:43:27,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 89 transitions, 426 flow [2025-03-09 06:43:27,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 89 transitions, 426 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:43:27,444 INFO L231 Difference]: Finished difference. Result has 83 places, 89 transitions, 356 flow [2025-03-09 06:43:27,444 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=356, PETRI_PLACES=83, PETRI_TRANSITIONS=89} [2025-03-09 06:43:27,444 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2025-03-09 06:43:27,445 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 356 flow [2025-03-09 06:43:27,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.0) internal successors, (170), 10 states have internal predecessors, (170), 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) [2025-03-09 06:43:27,445 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:27,445 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:27,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 06:43:27,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:27,649 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-09 06:43:27,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:27,650 INFO L85 PathProgramCache]: Analyzing trace with hash -673839415, now seen corresponding path program 1 times [2025-03-09 06:43:27,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:27,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839879765] [2025-03-09 06:43:27,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:27,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:27,660 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-09 06:43:27,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-09 06:43:27,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:27,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:27,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:27,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839879765] [2025-03-09 06:43:27,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839879765] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:27,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:27,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:43:27,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252302834] [2025-03-09 06:43:27,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:27,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:43:27,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:27,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:43:27,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:43:27,807 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-03-09 06:43:27,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2025-03-09 06:43:27,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:27,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-03-09 06:43:27,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:30,128 INFO L124 PetriNetUnfolderBase]: 39412/52671 cut-off events. [2025-03-09 06:43:30,129 INFO L125 PetriNetUnfolderBase]: For 517/517 co-relation queries the response was YES. [2025-03-09 06:43:30,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106948 conditions, 52671 events. 39412/52671 cut-off events. For 517/517 co-relation queries the response was YES. Maximal size of possible extension queue 2226. Compared 327593 event pairs, 35768 based on Foata normal form. 922/38750 useless extension candidates. Maximal degree in co-relation 106854. Up to 44731 conditions per place. [2025-03-09 06:43:30,402 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 107 selfloop transitions, 13 changer transitions 0/134 dead transitions. [2025-03-09 06:43:30,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 134 transitions, 766 flow [2025-03-09 06:43:30,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:43:30,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:43:30,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2025-03-09 06:43:30,405 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5012987012987012 [2025-03-09 06:43:30,405 INFO L175 Difference]: Start difference. First operand has 83 places, 89 transitions, 356 flow. Second operand 5 states and 193 transitions. [2025-03-09 06:43:30,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 134 transitions, 766 flow [2025-03-09 06:43:30,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 134 transitions, 672 flow, removed 29 selfloop flow, removed 4 redundant places. [2025-03-09 06:43:30,411 INFO L231 Difference]: Finished difference. Result has 85 places, 99 transitions, 418 flow [2025-03-09 06:43:30,411 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=418, PETRI_PLACES=85, PETRI_TRANSITIONS=99} [2025-03-09 06:43:30,412 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2025-03-09 06:43:30,412 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 99 transitions, 418 flow [2025-03-09 06:43:30,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2025-03-09 06:43:30,412 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:30,412 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:30,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-09 06:43:30,412 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-09 06:43:30,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:30,413 INFO L85 PathProgramCache]: Analyzing trace with hash 972333004, now seen corresponding path program 1 times [2025-03-09 06:43:30,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:30,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82862654] [2025-03-09 06:43:30,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:30,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:30,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:43:30,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:43:30,433 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:30,433 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:30,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:30,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:30,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82862654] [2025-03-09 06:43:30,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82862654] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:43:30,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289539671] [2025-03-09 06:43:30,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:30,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:30,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:30,561 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:43:30,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:43:30,606 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:43:30,620 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:43:30,620 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:30,620 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:30,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:43:30,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:43:30,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:43:30,638 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:43:30,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289539671] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:30,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:43:30,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-03-09 06:43:30,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484638570] [2025-03-09 06:43:30,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:30,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:43:30,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:30,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:43:30,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-09 06:43:30,639 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-03-09 06:43:30,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 99 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2025-03-09 06:43:30,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:30,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-03-09 06:43:30,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:32,969 INFO L124 PetriNetUnfolderBase]: 32539/44362 cut-off events. [2025-03-09 06:43:32,970 INFO L125 PetriNetUnfolderBase]: For 2623/2623 co-relation queries the response was YES. [2025-03-09 06:43:33,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91281 conditions, 44362 events. 32539/44362 cut-off events. For 2623/2623 co-relation queries the response was YES. Maximal size of possible extension queue 1876. Compared 281926 event pairs, 29348 based on Foata normal form. 0/32827 useless extension candidates. Maximal degree in co-relation 91186. Up to 43087 conditions per place. [2025-03-09 06:43:33,204 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 82 selfloop transitions, 1 changer transitions 0/97 dead transitions. [2025-03-09 06:43:33,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 97 transitions, 576 flow [2025-03-09 06:43:33,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:43:33,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:43:33,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2025-03-09 06:43:33,206 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4805194805194805 [2025-03-09 06:43:33,207 INFO L175 Difference]: Start difference. First operand has 85 places, 99 transitions, 418 flow. Second operand 3 states and 111 transitions. [2025-03-09 06:43:33,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 97 transitions, 576 flow [2025-03-09 06:43:33,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 97 transitions, 572 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-09 06:43:33,212 INFO L231 Difference]: Finished difference. Result has 84 places, 97 transitions, 408 flow [2025-03-09 06:43:33,213 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=84, PETRI_TRANSITIONS=97} [2025-03-09 06:43:33,214 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 6 predicate places. [2025-03-09 06:43:33,216 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 97 transitions, 408 flow [2025-03-09 06:43:33,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2025-03-09 06:43:33,216 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:33,216 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:33,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-09 06:43:33,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:33,420 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-09 06:43:33,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:33,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1857213116, now seen corresponding path program 1 times [2025-03-09 06:43:33,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:33,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324752071] [2025-03-09 06:43:33,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:33,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:33,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:43:33,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:43:33,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:33,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:33,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:33,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:33,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324752071] [2025-03-09 06:43:33,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324752071] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:33,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:33,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:43:33,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540320823] [2025-03-09 06:43:33,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:33,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:43:33,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:33,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:43:33,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:43:33,470 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-03-09 06:43:33,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 97 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2025-03-09 06:43:33,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:33,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-03-09 06:43:33,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:35,392 INFO L124 PetriNetUnfolderBase]: 32417/44268 cut-off events. [2025-03-09 06:43:35,392 INFO L125 PetriNetUnfolderBase]: For 3142/3142 co-relation queries the response was YES. [2025-03-09 06:43:35,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91698 conditions, 44268 events. 32417/44268 cut-off events. For 3142/3142 co-relation queries the response was YES. Maximal size of possible extension queue 1612. Compared 275075 event pairs, 12522 based on Foata normal form. 797/34194 useless extension candidates. Maximal degree in co-relation 91682. Up to 30066 conditions per place. [2025-03-09 06:43:35,646 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 108 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2025-03-09 06:43:35,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 124 transitions, 692 flow [2025-03-09 06:43:35,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:43:35,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:43:35,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2025-03-09 06:43:35,647 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5974025974025974 [2025-03-09 06:43:35,647 INFO L175 Difference]: Start difference. First operand has 84 places, 97 transitions, 408 flow. Second operand 3 states and 138 transitions. [2025-03-09 06:43:35,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 124 transitions, 692 flow [2025-03-09 06:43:35,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 124 transitions, 681 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:43:35,651 INFO L231 Difference]: Finished difference. Result has 85 places, 98 transitions, 411 flow [2025-03-09 06:43:35,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=411, PETRI_PLACES=85, PETRI_TRANSITIONS=98} [2025-03-09 06:43:35,652 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2025-03-09 06:43:35,652 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 98 transitions, 411 flow [2025-03-09 06:43:35,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2025-03-09 06:43:35,652 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:35,652 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:35,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:43:35,652 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-09 06:43:35,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:35,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1854458215, now seen corresponding path program 1 times [2025-03-09 06:43:35,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:35,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874377006] [2025-03-09 06:43:35,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:35,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:35,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:43:35,667 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:43:35,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:35,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:35,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:35,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:35,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874377006] [2025-03-09 06:43:35,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874377006] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:35,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:35,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:43:35,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93296368] [2025-03-09 06:43:35,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:35,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:43:35,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:35,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:43:35,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:43:35,699 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-03-09 06:43:35,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 98 transitions, 411 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2025-03-09 06:43:35,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:35,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-03-09 06:43:35,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:37,565 INFO L124 PetriNetUnfolderBase]: 26604/36533 cut-off events. [2025-03-09 06:43:37,565 INFO L125 PetriNetUnfolderBase]: For 3652/3652 co-relation queries the response was YES. [2025-03-09 06:43:37,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78396 conditions, 36533 events. 26604/36533 cut-off events. For 3652/3652 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 221511 event pairs, 24096 based on Foata normal form. 0/29432 useless extension candidates. Maximal degree in co-relation 78379. Up to 35456 conditions per place. [2025-03-09 06:43:37,764 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 77 selfloop transitions, 6 changer transitions 0/97 dead transitions. [2025-03-09 06:43:37,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 97 transitions, 575 flow [2025-03-09 06:43:37,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:43:37,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:43:37,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2025-03-09 06:43:37,765 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47186147186147187 [2025-03-09 06:43:37,765 INFO L175 Difference]: Start difference. First operand has 85 places, 98 transitions, 411 flow. Second operand 3 states and 109 transitions. [2025-03-09 06:43:37,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 97 transitions, 575 flow [2025-03-09 06:43:37,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 97 transitions, 573 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:43:37,769 INFO L231 Difference]: Finished difference. Result has 85 places, 97 transitions, 419 flow [2025-03-09 06:43:37,769 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=419, PETRI_PLACES=85, PETRI_TRANSITIONS=97} [2025-03-09 06:43:37,770 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2025-03-09 06:43:37,770 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 97 transitions, 419 flow [2025-03-09 06:43:37,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2025-03-09 06:43:37,770 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:37,770 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:37,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:43:37,770 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-09 06:43:37,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:37,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1854458216, now seen corresponding path program 1 times [2025-03-09 06:43:37,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:37,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123977059] [2025-03-09 06:43:37,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:37,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:37,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-09 06:43:37,782 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-09 06:43:37,782 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:37,782 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:37,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:37,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:37,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123977059] [2025-03-09 06:43:37,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123977059] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:37,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:37,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:43:37,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163582165] [2025-03-09 06:43:37,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:37,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:43:37,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:37,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:43:37,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:43:37,802 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-03-09 06:43:37,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 97 transitions, 419 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2025-03-09 06:43:37,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:37,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-03-09 06:43:37,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:39,272 INFO L124 PetriNetUnfolderBase]: 20791/28798 cut-off events. [2025-03-09 06:43:39,273 INFO L125 PetriNetUnfolderBase]: For 2933/2933 co-relation queries the response was YES. [2025-03-09 06:43:39,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61996 conditions, 28798 events. 20791/28798 cut-off events. For 2933/2933 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 169806 event pairs, 18775 based on Foata normal form. 0/24484 useless extension candidates. Maximal degree in co-relation 61979. Up to 27929 conditions per place. [2025-03-09 06:43:39,412 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 79 selfloop transitions, 1 changer transitions 2/96 dead transitions. [2025-03-09 06:43:39,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 96 transitions, 581 flow [2025-03-09 06:43:39,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:43:39,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:43:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2025-03-09 06:43:39,413 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2025-03-09 06:43:39,414 INFO L175 Difference]: Start difference. First operand has 85 places, 97 transitions, 419 flow. Second operand 3 states and 108 transitions. [2025-03-09 06:43:39,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 96 transitions, 581 flow [2025-03-09 06:43:39,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 96 transitions, 575 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:43:39,416 INFO L231 Difference]: Finished difference. Result has 85 places, 94 transitions, 401 flow [2025-03-09 06:43:39,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=401, PETRI_PLACES=85, PETRI_TRANSITIONS=94} [2025-03-09 06:43:39,417 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 7 predicate places. [2025-03-09 06:43:39,417 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 94 transitions, 401 flow [2025-03-09 06:43:39,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2025-03-09 06:43:39,417 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:39,417 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:39,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-09 06:43:39,417 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-09 06:43:39,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:39,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1677253005, now seen corresponding path program 1 times [2025-03-09 06:43:39,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:39,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179890850] [2025-03-09 06:43:39,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:39,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:39,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:43:39,431 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:43:39,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:39,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:43:39,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:39,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179890850] [2025-03-09 06:43:39,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179890850] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:39,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:39,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:43:39,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891100870] [2025-03-09 06:43:39,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:39,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:43:39,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:39,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:43:39,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:43:39,464 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-03-09 06:43:39,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 94 transitions, 401 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2025-03-09 06:43:39,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:39,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-03-09 06:43:39,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:41,080 INFO L124 PetriNetUnfolderBase]: 19391/27326 cut-off events. [2025-03-09 06:43:41,081 INFO L125 PetriNetUnfolderBase]: For 2771/2771 co-relation queries the response was YES. [2025-03-09 06:43:41,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58219 conditions, 27326 events. 19391/27326 cut-off events. For 2771/2771 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 162055 event pairs, 8556 based on Foata normal form. 144/23663 useless extension candidates. Maximal degree in co-relation 58201. Up to 21928 conditions per place. [2025-03-09 06:43:41,179 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 95 selfloop transitions, 2 changer transitions 3/114 dead transitions. [2025-03-09 06:43:41,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 114 transitions, 649 flow [2025-03-09 06:43:41,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:43:41,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:43:41,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2025-03-09 06:43:41,180 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5497835497835498 [2025-03-09 06:43:41,180 INFO L175 Difference]: Start difference. First operand has 85 places, 94 transitions, 401 flow. Second operand 3 states and 127 transitions. [2025-03-09 06:43:41,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 114 transitions, 649 flow [2025-03-09 06:43:41,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 114 transitions, 648 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:43:41,182 INFO L231 Difference]: Finished difference. Result has 86 places, 95 transitions, 414 flow [2025-03-09 06:43:41,183 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=414, PETRI_PLACES=86, PETRI_TRANSITIONS=95} [2025-03-09 06:43:41,183 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2025-03-09 06:43:41,183 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 95 transitions, 414 flow [2025-03-09 06:43:41,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2025-03-09 06:43:41,184 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:41,184 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:41,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 06:43:41,184 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-09 06:43:41,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:41,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1890829201, now seen corresponding path program 1 times [2025-03-09 06:43:41,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:41,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275937182] [2025-03-09 06:43:41,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:41,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:41,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:43:41,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:43:41,194 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:41,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:43:41,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:41,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275937182] [2025-03-09 06:43:41,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275937182] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:41,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:41,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:43:41,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845510918] [2025-03-09 06:43:41,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:41,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:43:41,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:41,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:43:41,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:43:41,224 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-03-09 06:43:41,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 95 transitions, 414 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2025-03-09 06:43:41,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:41,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-03-09 06:43:41,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:43,429 INFO L124 PetriNetUnfolderBase]: 31127/44084 cut-off events. [2025-03-09 06:43:43,429 INFO L125 PetriNetUnfolderBase]: For 7396/7396 co-relation queries the response was YES. [2025-03-09 06:43:43,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94709 conditions, 44084 events. 31127/44084 cut-off events. For 7396/7396 co-relation queries the response was YES. Maximal size of possible extension queue 1205. Compared 279506 event pairs, 11139 based on Foata normal form. 1014/36755 useless extension candidates. Maximal degree in co-relation 94689. Up to 18985 conditions per place. [2025-03-09 06:43:43,704 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 143 selfloop transitions, 4 changer transitions 0/157 dead transitions. [2025-03-09 06:43:43,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 157 transitions, 864 flow [2025-03-09 06:43:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:43:43,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:43:43,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 175 transitions. [2025-03-09 06:43:43,709 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2025-03-09 06:43:43,709 INFO L175 Difference]: Start difference. First operand has 86 places, 95 transitions, 414 flow. Second operand 4 states and 175 transitions. [2025-03-09 06:43:43,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 157 transitions, 864 flow [2025-03-09 06:43:43,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 157 transitions, 854 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-03-09 06:43:43,715 INFO L231 Difference]: Finished difference. Result has 88 places, 95 transitions, 421 flow [2025-03-09 06:43:43,716 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=421, PETRI_PLACES=88, PETRI_TRANSITIONS=95} [2025-03-09 06:43:43,716 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 10 predicate places. [2025-03-09 06:43:43,716 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 95 transitions, 421 flow [2025-03-09 06:43:43,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2025-03-09 06:43:43,716 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:43,716 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:43,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 06:43:43,716 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-09 06:43:43,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:43,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1513837620, now seen corresponding path program 1 times [2025-03-09 06:43:43,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:43,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266893748] [2025-03-09 06:43:43,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:43,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:43,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:43:43,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:43:43,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:43,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:43,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:43:43,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:43,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266893748] [2025-03-09 06:43:43,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266893748] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:43,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:43,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:43:43,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973617158] [2025-03-09 06:43:43,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:43,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-09 06:43:43,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:43,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-09 06:43:43,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-09 06:43:43,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 77 [2025-03-09 06:43:43,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 95 transitions, 421 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:43:43,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:43,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 77 [2025-03-09 06:43:43,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:45,690 INFO L124 PetriNetUnfolderBase]: 24303/34388 cut-off events. [2025-03-09 06:43:45,690 INFO L125 PetriNetUnfolderBase]: For 7598/7598 co-relation queries the response was YES. [2025-03-09 06:43:45,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79613 conditions, 34388 events. 24303/34388 cut-off events. For 7598/7598 co-relation queries the response was YES. Maximal size of possible extension queue 925. Compared 208354 event pairs, 9062 based on Foata normal form. 1014/31127 useless extension candidates. Maximal degree in co-relation 79592. Up to 19374 conditions per place. [2025-03-09 06:43:46,066 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 139 selfloop transitions, 6 changer transitions 0/156 dead transitions. [2025-03-09 06:43:46,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 156 transitions, 861 flow [2025-03-09 06:43:46,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-09 06:43:46,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-09 06:43:46,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2025-03-09 06:43:46,067 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5012987012987012 [2025-03-09 06:43:46,067 INFO L175 Difference]: Start difference. First operand has 88 places, 95 transitions, 421 flow. Second operand 5 states and 193 transitions. [2025-03-09 06:43:46,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 156 transitions, 861 flow [2025-03-09 06:43:46,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 156 transitions, 856 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:43:46,087 INFO L231 Difference]: Finished difference. Result has 89 places, 94 transitions, 426 flow [2025-03-09 06:43:46,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=426, PETRI_PLACES=89, PETRI_TRANSITIONS=94} [2025-03-09 06:43:46,088 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 11 predicate places. [2025-03-09 06:43:46,088 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 94 transitions, 426 flow [2025-03-09 06:43:46,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:43:46,088 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:46,088 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-09 06:43:46,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-09 06:43:46,088 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-09 06:43:46,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:46,088 INFO L85 PathProgramCache]: Analyzing trace with hash -94518101, now seen corresponding path program 2 times [2025-03-09 06:43:46,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:46,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839832974] [2025-03-09 06:43:46,089 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:43:46,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:46,097 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-09 06:43:46,101 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-09 06:43:46,101 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:43:46,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:43:46,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:46,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839832974] [2025-03-09 06:43:46,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839832974] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:43:46,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192259387] [2025-03-09 06:43:46,130 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:43:46,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:46,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:46,132 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:43:46,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:43:46,181 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-09 06:43:46,190 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-09 06:43:46,190 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:43:46,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:46,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-09 06:43:46,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:43:46,212 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:43:46,212 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:43:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:43:46,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192259387] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:43:46,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:43:46,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-09 06:43:46,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133936514] [2025-03-09 06:43:46,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:43:46,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:43:46,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:46,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:43:46,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:43:46,240 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-03-09 06:43:46,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 94 transitions, 426 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2025-03-09 06:43:46,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:46,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-03-09 06:43:46,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:47,753 INFO L124 PetriNetUnfolderBase]: 20539/28048 cut-off events. [2025-03-09 06:43:47,754 INFO L125 PetriNetUnfolderBase]: For 15206/16418 co-relation queries the response was YES. [2025-03-09 06:43:47,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68925 conditions, 28048 events. 20539/28048 cut-off events. For 15206/16418 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 157412 event pairs, 17392 based on Foata normal form. 1213/25712 useless extension candidates. Maximal degree in co-relation 68903. Up to 27262 conditions per place. [2025-03-09 06:43:47,888 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 67 selfloop transitions, 16 changer transitions 0/93 dead transitions. [2025-03-09 06:43:47,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 93 transitions, 582 flow [2025-03-09 06:43:47,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:43:47,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:43:47,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2025-03-09 06:43:47,889 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2025-03-09 06:43:47,889 INFO L175 Difference]: Start difference. First operand has 89 places, 94 transitions, 426 flow. Second operand 4 states and 112 transitions. [2025-03-09 06:43:47,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 93 transitions, 582 flow [2025-03-09 06:43:47,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 93 transitions, 570 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-09 06:43:47,898 INFO L231 Difference]: Finished difference. Result has 87 places, 93 transitions, 436 flow [2025-03-09 06:43:47,899 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=436, PETRI_PLACES=87, PETRI_TRANSITIONS=93} [2025-03-09 06:43:47,899 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2025-03-09 06:43:47,899 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 93 transitions, 436 flow [2025-03-09 06:43:47,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2025-03-09 06:43:47,899 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:47,900 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-03-09 06:43:47,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 06:43:48,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:48,100 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-09 06:43:48,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:48,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1722911179, now seen corresponding path program 1 times [2025-03-09 06:43:48,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:48,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639884399] [2025-03-09 06:43:48,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:48,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:48,108 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:43:48,116 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:43:48,116 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:48,116 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:48,228 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:48,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:48,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639884399] [2025-03-09 06:43:48,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639884399] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:43:48,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163175268] [2025-03-09 06:43:48,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:48,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:48,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:43:48,231 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:43:48,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:43:48,276 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:43:48,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:43:48,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:48,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:48,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 06:43:48,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:43:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:48,323 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:43:48,444 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:43:48,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163175268] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:43:48,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:43:48,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-03-09 06:43:48,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876112385] [2025-03-09 06:43:48,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:43:48,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-09 06:43:48,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:48,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-09 06:43:48,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-03-09 06:43:48,481 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-03-09 06:43:48,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 93 transitions, 436 flow. Second operand has 24 states, 24 states have (on average 17.083333333333332) internal successors, (410), 24 states have internal predecessors, (410), 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) [2025-03-09 06:43:48,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:48,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-03-09 06:43:48,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:43:50,252 INFO L124 PetriNetUnfolderBase]: 20557/28120 cut-off events. [2025-03-09 06:43:50,252 INFO L125 PetriNetUnfolderBase]: For 6986/8198 co-relation queries the response was YES. [2025-03-09 06:43:50,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64320 conditions, 28120 events. 20557/28120 cut-off events. For 6986/8198 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 157909 event pairs, 17392 based on Foata normal form. 1224/25789 useless extension candidates. Maximal degree in co-relation 64298. Up to 27258 conditions per place. [2025-03-09 06:43:50,374 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 51 selfloop transitions, 80 changer transitions 0/141 dead transitions. [2025-03-09 06:43:50,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 141 transitions, 1040 flow [2025-03-09 06:43:50,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-09 06:43:50,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-09 06:43:50,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 465 transitions. [2025-03-09 06:43:50,376 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2744982290436836 [2025-03-09 06:43:50,376 INFO L175 Difference]: Start difference. First operand has 87 places, 93 transitions, 436 flow. Second operand 22 states and 465 transitions. [2025-03-09 06:43:50,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 141 transitions, 1040 flow [2025-03-09 06:43:50,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 141 transitions, 972 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:43:50,381 INFO L231 Difference]: Finished difference. Result has 111 places, 141 transitions, 932 flow [2025-03-09 06:43:50,381 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=932, PETRI_PLACES=111, PETRI_TRANSITIONS=141} [2025-03-09 06:43:50,381 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 33 predicate places. [2025-03-09 06:43:50,382 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 141 transitions, 932 flow [2025-03-09 06:43:50,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 17.083333333333332) internal successors, (410), 24 states have internal predecessors, (410), 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) [2025-03-09 06:43:50,382 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:43:50,382 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:43:50,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 06:43:50,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:43:50,583 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-09 06:43:50,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:43:50,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1874999362, now seen corresponding path program 1 times [2025-03-09 06:43:50,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:43:50,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267642579] [2025-03-09 06:43:50,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:43:50,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:43:50,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-09 06:43:50,598 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-09 06:43:50,598 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:43:50,598 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:43:50,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:43:50,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:43:50,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267642579] [2025-03-09 06:43:50,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267642579] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:43:50,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:43:50,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:43:50,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041585677] [2025-03-09 06:43:50,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:43:50,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:43:50,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:43:50,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:43:50,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:43:50,672 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-03-09 06:43:50,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 141 transitions, 932 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 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) [2025-03-09 06:43:50,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:43:50,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-03-09 06:43:50,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand