./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 8fc3dc66 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-?-8fc3dc6-m [2025-03-17 19:46:09,052 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:46:09,107 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:46:09,110 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:46:09,110 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:46:09,132 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:46:09,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:46:09,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:46:09,133 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:46:09,133 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:46:09,134 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:46:09,134 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:46:09,134 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:46:09,134 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:46:09,134 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:46:09,135 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:46:09,135 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:46:09,135 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:46:09,135 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:46:09,135 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:46:09,135 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:46:09,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:46:09,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:46:09,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:46:09,135 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:46:09,135 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:46:09,135 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:46:09,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:46:09,135 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:46:09,135 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:46:09,136 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:46:09,136 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:46:09,136 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:46:09,136 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:46:09,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:46:09,136 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:46:09,136 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:46:09,136 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:46:09,136 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:46:09,136 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:46:09,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:46:09,136 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:46:09,136 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:46:09,136 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:46:09,137 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:46:09,137 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 [2025-03-17 19:46:09,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:46:09,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:46:09,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:46:09,392 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:46:09,392 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:46:09,394 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2025-03-17 19:46:10,508 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad68c42c5/8d7ab3f1ceb94f78b7811276be3819d1/FLAG19fde9df2 [2025-03-17 19:46:10,731 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:46:10,732 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2025-03-17 19:46:10,738 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad68c42c5/8d7ab3f1ceb94f78b7811276be3819d1/FLAG19fde9df2 [2025-03-17 19:46:10,750 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad68c42c5/8d7ab3f1ceb94f78b7811276be3819d1 [2025-03-17 19:46:10,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:46:10,753 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:46:10,753 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:46:10,754 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:46:10,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:46:10,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:46:10" (1/1) ... [2025-03-17 19:46:10,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bcb26ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:10, skipping insertion in model container [2025-03-17 19:46:10,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:46:10" (1/1) ... [2025-03-17 19:46:10,773 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:46:10,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:46:10,933 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:46:10,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:46:10,976 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:46:10,977 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:10 WrapperNode [2025-03-17 19:46:10,977 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:46:10,978 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:46:10,978 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:46:10,978 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:46:10,983 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:10" (1/1) ... [2025-03-17 19:46:10,989 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:10" (1/1) ... [2025-03-17 19:46:11,018 INFO L138 Inliner]: procedures = 25, calls = 54, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 263 [2025-03-17 19:46:11,019 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:46:11,020 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:46:11,020 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:46:11,020 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:46:11,026 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:10" (1/1) ... [2025-03-17 19:46:11,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:10" (1/1) ... [2025-03-17 19:46:11,032 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:10" (1/1) ... [2025-03-17 19:46:11,054 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]. [2025-03-17 19:46:11,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:10" (1/1) ... [2025-03-17 19:46:11,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:10" (1/1) ... [2025-03-17 19:46:11,062 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:10" (1/1) ... [2025-03-17 19:46:11,064 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:10" (1/1) ... [2025-03-17 19:46:11,069 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:10" (1/1) ... [2025-03-17 19:46:11,071 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:10" (1/1) ... [2025-03-17 19:46:11,072 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:46:11,073 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:46:11,073 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:46:11,073 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:46:11,074 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:10" (1/1) ... [2025-03-17 19:46:11,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:46:11,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:11,102 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) [2025-03-17 19:46:11,104 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 [2025-03-17 19:46:11,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:46:11,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:46:11,124 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:46:11,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:46:11,124 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:46:11,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 19:46:11,124 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 19:46:11,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-17 19:46:11,124 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-17 19:46:11,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:46:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 19:46:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 19:46:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 19:46:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 19:46:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 19:46:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 19:46:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:46:11,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:46:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 19:46:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 19:46:11,127 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:46:11,213 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:46:11,214 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:46:11,546 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:46:11,547 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:46:11,772 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:46:11,772 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:46:11,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:46:11 BoogieIcfgContainer [2025-03-17 19:46:11,773 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:46:11,774 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:46:11,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:46:11,777 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:46:11,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:46:10" (1/3) ... [2025-03-17 19:46:11,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce2dd79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:46:11, skipping insertion in model container [2025-03-17 19:46:11,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:46:10" (2/3) ... [2025-03-17 19:46:11,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce2dd79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:46:11, skipping insertion in model container [2025-03-17 19:46:11,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:46:11" (3/3) ... [2025-03-17 19:46:11,780 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2025-03-17 19:46:11,790 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:46:11,791 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. [2025-03-17 19:46:11,791 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:46:11,849 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-17 19:46:11,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 182 flow [2025-03-17 19:46:11,908 INFO L124 PetriNetUnfolderBase]: 6/73 cut-off events. [2025-03-17 19:46:11,910 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 19:46:11,914 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. [2025-03-17 19:46:11,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 77 transitions, 182 flow [2025-03-17 19:46:11,918 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 71 transitions, 163 flow [2025-03-17 19:46:11,923 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:46:11,934 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;@31fbad20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:46:11,934 INFO L334 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2025-03-17 19:46:11,937 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:46:11,937 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-17 19:46:11,937 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:46:11,937 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:11,938 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-17 19:46:11,938 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-17 19:46:11,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:11,943 INFO L85 PathProgramCache]: Analyzing trace with hash 735459, now seen corresponding path program 1 times [2025-03-17 19:46:11,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:11,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157013325] [2025-03-17 19:46:11,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:11,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:12,000 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-17 19:46:12,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-17 19:46:12,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:12,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:12,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:12,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:12,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157013325] [2025-03-17 19:46:12,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157013325] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:12,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:12,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:46:12,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518415728] [2025-03-17 19:46:12,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:12,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:46:12,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:12,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:46:12,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:46:12,198 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-03-17 19:46:12,200 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) [2025-03-17 19:46:12,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:12,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-03-17 19:46:12,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:14,997 INFO L124 PetriNetUnfolderBase]: 34049/45577 cut-off events. [2025-03-17 19:46:14,998 INFO L125 PetriNetUnfolderBase]: For 2157/2157 co-relation queries the response was YES. [2025-03-17 19:46:15,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92773 conditions, 45577 events. 34049/45577 cut-off events. For 2157/2157 co-relation queries the response was YES. Maximal size of possible extension queue 2313. Compared 286042 event pairs, 30634 based on Foata normal form. 2/31282 useless extension candidates. Maximal degree in co-relation 87374. Up to 44715 conditions per place. [2025-03-17 19:46:15,287 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 54 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2025-03-17 19:46:15,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 73 transitions, 289 flow [2025-03-17 19:46:15,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:46:15,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:46:15,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2025-03-17 19:46:15,302 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2025-03-17 19:46:15,303 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 163 flow. Second operand 4 states and 133 transitions. [2025-03-17 19:46:15,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 73 transitions, 289 flow [2025-03-17 19:46:15,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-17 19:46:15,491 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 202 flow [2025-03-17 19:46:15,492 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2025-03-17 19:46:15,495 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -5 predicate places. [2025-03-17 19:46:15,495 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 202 flow [2025-03-17 19:46:15,495 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) [2025-03-17 19:46:15,495 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:15,495 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-17 19:46:15,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:46:15,496 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-17 19:46:15,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:15,496 INFO L85 PathProgramCache]: Analyzing trace with hash 435905193, now seen corresponding path program 1 times [2025-03-17 19:46:15,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:15,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824359623] [2025-03-17 19:46:15,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:15,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:15,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:46:15,517 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:46:15,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:15,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:15,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:15,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824359623] [2025-03-17 19:46:15,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824359623] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:15,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986880569] [2025-03-17 19:46:15,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:15,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:15,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:15,634 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) [2025-03-17 19:46:15,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:46:15,689 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:46:15,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:46:15,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:15,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:15,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:46:15,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:15,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:15,744 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:46:15,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986880569] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:15,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:46:15,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-17 19:46:15,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641390678] [2025-03-17 19:46:15,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:15,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:46:15,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:15,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:46:15,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:46:15,761 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-03-17 19:46:15,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2025-03-17 19:46:15,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:15,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-03-17 19:46:15,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:18,024 INFO L124 PetriNetUnfolderBase]: 34049/45575 cut-off events. [2025-03-17 19:46:18,024 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2025-03-17 19:46:18,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92056 conditions, 45575 events. 34049/45575 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 2313. Compared 286178 event pairs, 30634 based on Foata normal form. 2/31283 useless extension candidates. Maximal degree in co-relation 92006. Up to 44705 conditions per place. [2025-03-17 19:46:18,248 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 47 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2025-03-17 19:46:18,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 71 transitions, 312 flow [2025-03-17 19:46:18,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:46:18,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:46:18,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2025-03-17 19:46:18,250 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3398268398268398 [2025-03-17 19:46:18,250 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 202 flow. Second operand 6 states and 157 transitions. [2025-03-17 19:46:18,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 71 transitions, 312 flow [2025-03-17 19:46:18,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 71 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:46:18,252 INFO L231 Difference]: Finished difference. Result has 76 places, 71 transitions, 218 flow [2025-03-17 19:46:18,252 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=6, PETRI_FLOW=218, PETRI_PLACES=76, PETRI_TRANSITIONS=71} [2025-03-17 19:46:18,253 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2025-03-17 19:46:18,253 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 71 transitions, 218 flow [2025-03-17 19:46:18,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2025-03-17 19:46:18,253 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:18,253 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-17 19:46:18,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 19:46:18,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:18,454 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-17 19:46:18,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:18,455 INFO L85 PathProgramCache]: Analyzing trace with hash 628159781, now seen corresponding path program 1 times [2025-03-17 19:46:18,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:18,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715100499] [2025-03-17 19:46:18,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:18,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:18,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:46:18,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:46:18,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:18,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:18,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:18,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715100499] [2025-03-17 19:46:18,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715100499] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:18,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184021780] [2025-03-17 19:46:18,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:18,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:18,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:18,559 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) [2025-03-17 19:46:18,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:46:18,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:46:18,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:46:18,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:18,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:18,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:46:18,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:18,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:18,781 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:18,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:18,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184021780] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:18,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:18,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-03-17 19:46:18,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984177988] [2025-03-17 19:46:18,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:18,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:46:18,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:18,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:46:18,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:46:18,842 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-03-17 19:46:18,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 71 transitions, 218 flow. Second operand has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 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) [2025-03-17 19:46:18,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:18,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-03-17 19:46:18,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:20,790 INFO L124 PetriNetUnfolderBase]: 34055/45599 cut-off events. [2025-03-17 19:46:20,790 INFO L125 PetriNetUnfolderBase]: For 396/396 co-relation queries the response was YES. [2025-03-17 19:46:20,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92150 conditions, 45599 events. 34055/45599 cut-off events. For 396/396 co-relation queries the response was YES. Maximal size of possible extension queue 2313. Compared 286334 event pairs, 30634 based on Foata normal form. 6/31310 useless extension candidates. Maximal degree in co-relation 92008. Up to 44716 conditions per place. [2025-03-17 19:46:21,059 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 52 selfloop transitions, 25 changer transitions 0/89 dead transitions. [2025-03-17 19:46:21,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 89 transitions, 486 flow [2025-03-17 19:46:21,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:46:21,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:46:21,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 243 transitions. [2025-03-17 19:46:21,061 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3155844155844156 [2025-03-17 19:46:21,061 INFO L175 Difference]: Start difference. First operand has 76 places, 71 transitions, 218 flow. Second operand 10 states and 243 transitions. [2025-03-17 19:46:21,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 89 transitions, 486 flow [2025-03-17 19:46:21,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 89 transitions, 428 flow, removed 12 selfloop flow, removed 5 redundant places. [2025-03-17 19:46:21,063 INFO L231 Difference]: Finished difference. Result has 83 places, 89 transitions, 358 flow [2025-03-17 19:46:21,066 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=190, 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=358, PETRI_PLACES=83, PETRI_TRANSITIONS=89} [2025-03-17 19:46:21,067 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 5 predicate places. [2025-03-17 19:46:21,067 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 89 transitions, 358 flow [2025-03-17 19:46:21,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.083333333333332) internal successors, (205), 12 states have internal predecessors, (205), 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) [2025-03-17 19:46:21,067 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:21,067 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:21,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 19:46:21,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-17 19:46:21,268 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-17 19:46:21,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:21,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1063798854, now seen corresponding path program 1 times [2025-03-17 19:46:21,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:21,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359138888] [2025-03-17 19:46:21,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:21,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:21,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:46:21,281 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:46:21,281 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:21,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:21,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:21,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:21,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359138888] [2025-03-17 19:46:21,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359138888] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:21,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:21,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:46:21,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236202412] [2025-03-17 19:46:21,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:21,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:46:21,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:21,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:46:21,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:46:21,396 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-03-17 19:46:21,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 358 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) [2025-03-17 19:46:21,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:21,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-03-17 19:46:21,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:23,714 INFO L124 PetriNetUnfolderBase]: 39412/52671 cut-off events. [2025-03-17 19:46:23,714 INFO L125 PetriNetUnfolderBase]: For 541/541 co-relation queries the response was YES. [2025-03-17 19:46:23,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106943 conditions, 52671 events. 39412/52671 cut-off events. For 541/541 co-relation queries the response was YES. Maximal size of possible extension queue 2250. Compared 328305 event pairs, 35768 based on Foata normal form. 922/38749 useless extension candidates. Maximal degree in co-relation 106847. Up to 44731 conditions per place. [2025-03-17 19:46:23,951 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 115 selfloop transitions, 5 changer transitions 0/134 dead transitions. [2025-03-17 19:46:23,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 134 transitions, 769 flow [2025-03-17 19:46:23,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:46:23,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:46:23,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2025-03-17 19:46:23,952 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5038961038961038 [2025-03-17 19:46:23,952 INFO L175 Difference]: Start difference. First operand has 83 places, 89 transitions, 358 flow. Second operand 5 states and 194 transitions. [2025-03-17 19:46:23,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 134 transitions, 769 flow [2025-03-17 19:46:23,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 134 transitions, 735 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-03-17 19:46:23,958 INFO L231 Difference]: Finished difference. Result has 87 places, 91 transitions, 373 flow [2025-03-17 19:46:23,958 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=373, PETRI_PLACES=87, PETRI_TRANSITIONS=91} [2025-03-17 19:46:23,959 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2025-03-17 19:46:23,959 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 91 transitions, 373 flow [2025-03-17 19:46:23,959 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) [2025-03-17 19:46:23,959 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:23,959 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:23,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:46:23,959 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-17 19:46:23,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:23,960 INFO L85 PathProgramCache]: Analyzing trace with hash -286816884, now seen corresponding path program 1 times [2025-03-17 19:46:23,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:23,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114299410] [2025-03-17 19:46:23,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:23,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:23,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:46:23,972 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:46:23,972 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:23,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:24,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:24,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:24,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114299410] [2025-03-17 19:46:24,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114299410] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:24,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775017552] [2025-03-17 19:46:24,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:24,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:24,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:24,077 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) [2025-03-17 19:46:24,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 19:46:24,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:46:24,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:46:24,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:24,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:24,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 19:46:24,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:24,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:24,150 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:46:24,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775017552] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:24,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:46:24,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2025-03-17 19:46:24,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599697584] [2025-03-17 19:46:24,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:24,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:46:24,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:24,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:46:24,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:46:24,151 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-03-17 19:46:24,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 91 transitions, 373 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) [2025-03-17 19:46:24,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:24,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-03-17 19:46:24,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:26,191 INFO L124 PetriNetUnfolderBase]: 32539/45082 cut-off events. [2025-03-17 19:46:26,192 INFO L125 PetriNetUnfolderBase]: For 2616/2616 co-relation queries the response was YES. [2025-03-17 19:46:26,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92004 conditions, 45082 events. 32539/45082 cut-off events. For 2616/2616 co-relation queries the response was YES. Maximal size of possible extension queue 1938. Compared 295568 event pairs, 29348 based on Foata normal form. 0/33323 useless extension candidates. Maximal degree in co-relation 91909. Up to 43087 conditions per place. [2025-03-17 19:46:26,466 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 74 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2025-03-17 19:46:26,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 89 transitions, 515 flow [2025-03-17 19:46:26,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:46:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:46:26,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2025-03-17 19:46:26,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4805194805194805 [2025-03-17 19:46:26,467 INFO L175 Difference]: Start difference. First operand has 87 places, 91 transitions, 373 flow. Second operand 3 states and 111 transitions. [2025-03-17 19:46:26,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 89 transitions, 515 flow [2025-03-17 19:46:26,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 89 transitions, 511 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-17 19:46:26,471 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 363 flow [2025-03-17 19:46:26,471 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=363, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2025-03-17 19:46:26,471 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2025-03-17 19:46:26,471 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 363 flow [2025-03-17 19:46:26,471 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) [2025-03-17 19:46:26,471 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:26,471 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:26,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-17 19:46:26,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:26,672 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-17 19:46:26,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:26,672 INFO L85 PathProgramCache]: Analyzing trace with hash 598063228, now seen corresponding path program 1 times [2025-03-17 19:46:26,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:26,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13514129] [2025-03-17 19:46:26,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:26,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:26,680 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:46:26,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:46:26,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:26,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:26,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:26,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13514129] [2025-03-17 19:46:26,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13514129] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:26,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:26,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:46:26,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643140707] [2025-03-17 19:46:26,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:26,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:46:26,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:26,746 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:46:26,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:46:26,746 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-03-17 19:46:26,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 363 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) [2025-03-17 19:46:26,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:26,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-03-17 19:46:26,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:28,755 INFO L124 PetriNetUnfolderBase]: 32417/44268 cut-off events. [2025-03-17 19:46:28,755 INFO L125 PetriNetUnfolderBase]: For 3135/3135 co-relation queries the response was YES. [2025-03-17 19:46:28,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91701 conditions, 44268 events. 32417/44268 cut-off events. For 3135/3135 co-relation queries the response was YES. Maximal size of possible extension queue 1612. Compared 275452 event pairs, 12522 based on Foata normal form. 797/34192 useless extension candidates. Maximal degree in co-relation 91685. Up to 30066 conditions per place. [2025-03-17 19:46:28,977 INFO L140 encePairwiseOnDemand]: 73/77 looper letters, 100 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2025-03-17 19:46:28,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 116 transitions, 631 flow [2025-03-17 19:46:28,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:46:28,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:46:28,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2025-03-17 19:46:28,978 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5974025974025974 [2025-03-17 19:46:28,978 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 363 flow. Second operand 3 states and 138 transitions. [2025-03-17 19:46:28,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 116 transitions, 631 flow [2025-03-17 19:46:28,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 116 transitions, 620 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:46:28,982 INFO L231 Difference]: Finished difference. Result has 87 places, 90 transitions, 366 flow [2025-03-17 19:46:28,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=366, PETRI_PLACES=87, PETRI_TRANSITIONS=90} [2025-03-17 19:46:28,983 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2025-03-17 19:46:28,983 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 90 transitions, 366 flow [2025-03-17 19:46:28,983 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) [2025-03-17 19:46:28,983 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:28,983 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:28,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:46:28,983 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-17 19:46:28,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:28,984 INFO L85 PathProgramCache]: Analyzing trace with hash 595308327, now seen corresponding path program 1 times [2025-03-17 19:46:28,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:28,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056301120] [2025-03-17 19:46:28,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:28,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:28,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:46:28,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:46:28,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:28,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:29,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:29,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:29,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056301120] [2025-03-17 19:46:29,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056301120] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:29,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:29,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:46:29,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301818088] [2025-03-17 19:46:29,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:29,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:46:29,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:29,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:46:29,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:46:29,028 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-03-17 19:46:29,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 90 transitions, 366 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) [2025-03-17 19:46:29,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:29,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-03-17 19:46:29,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:30,918 INFO L124 PetriNetUnfolderBase]: 26604/36533 cut-off events. [2025-03-17 19:46:30,919 INFO L125 PetriNetUnfolderBase]: For 3645/3645 co-relation queries the response was YES. [2025-03-17 19:46:30,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78399 conditions, 36533 events. 26604/36533 cut-off events. For 3645/3645 co-relation queries the response was YES. Maximal size of possible extension queue 1294. Compared 221839 event pairs, 24096 based on Foata normal form. 0/29430 useless extension candidates. Maximal degree in co-relation 78382. Up to 35456 conditions per place. [2025-03-17 19:46:31,078 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 69 selfloop transitions, 6 changer transitions 0/89 dead transitions. [2025-03-17 19:46:31,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 89 transitions, 514 flow [2025-03-17 19:46:31,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:46:31,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:46:31,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2025-03-17 19:46:31,079 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47186147186147187 [2025-03-17 19:46:31,079 INFO L175 Difference]: Start difference. First operand has 87 places, 90 transitions, 366 flow. Second operand 3 states and 109 transitions. [2025-03-17 19:46:31,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 89 transitions, 514 flow [2025-03-17 19:46:31,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 512 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:46:31,082 INFO L231 Difference]: Finished difference. Result has 87 places, 89 transitions, 374 flow [2025-03-17 19:46:31,082 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=374, PETRI_PLACES=87, PETRI_TRANSITIONS=89} [2025-03-17 19:46:31,082 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2025-03-17 19:46:31,082 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 89 transitions, 374 flow [2025-03-17 19:46:31,082 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) [2025-03-17 19:46:31,082 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:31,082 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:31,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:46:31,083 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-17 19:46:31,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:31,083 INFO L85 PathProgramCache]: Analyzing trace with hash 595308328, now seen corresponding path program 1 times [2025-03-17 19:46:31,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:31,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134966159] [2025-03-17 19:46:31,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:31,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:31,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:46:31,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:46:31,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:31,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:31,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:31,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:31,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134966159] [2025-03-17 19:46:31,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134966159] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:31,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:31,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:46:31,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495744600] [2025-03-17 19:46:31,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:31,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:46:31,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:31,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:46:31,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:46:31,117 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-03-17 19:46:31,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 89 transitions, 374 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) [2025-03-17 19:46:31,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:31,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-03-17 19:46:31,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:32,233 INFO L124 PetriNetUnfolderBase]: 20791/28798 cut-off events. [2025-03-17 19:46:32,233 INFO L125 PetriNetUnfolderBase]: For 2926/2926 co-relation queries the response was YES. [2025-03-17 19:46:32,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61999 conditions, 28798 events. 20791/28798 cut-off events. For 2926/2926 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 169953 event pairs, 18775 based on Foata normal form. 0/24484 useless extension candidates. Maximal degree in co-relation 61982. Up to 27929 conditions per place. [2025-03-17 19:46:32,565 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 71 selfloop transitions, 1 changer transitions 2/88 dead transitions. [2025-03-17 19:46:32,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 88 transitions, 520 flow [2025-03-17 19:46:32,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:46:32,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:46:32,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2025-03-17 19:46:32,566 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2025-03-17 19:46:32,566 INFO L175 Difference]: Start difference. First operand has 87 places, 89 transitions, 374 flow. Second operand 3 states and 108 transitions. [2025-03-17 19:46:32,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 88 transitions, 520 flow [2025-03-17 19:46:32,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 88 transitions, 514 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:46:32,569 INFO L231 Difference]: Finished difference. Result has 87 places, 86 transitions, 356 flow [2025-03-17 19:46:32,569 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=356, PETRI_PLACES=87, PETRI_TRANSITIONS=86} [2025-03-17 19:46:32,570 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 9 predicate places. [2025-03-17 19:46:32,570 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 86 transitions, 356 flow [2025-03-17 19:46:32,570 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) [2025-03-17 19:46:32,570 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:32,570 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:32,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:46:32,570 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-17 19:46:32,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:32,570 INFO L85 PathProgramCache]: Analyzing trace with hash -539517997, now seen corresponding path program 1 times [2025-03-17 19:46:32,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:32,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381971513] [2025-03-17 19:46:32,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:32,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:32,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:46:32,585 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:46:32,585 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:32,585 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:32,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:32,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:32,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381971513] [2025-03-17 19:46:32,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381971513] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:32,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:32,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:46:32,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410446589] [2025-03-17 19:46:32,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:32,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:46:32,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:32,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:46:32,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:46:32,629 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-03-17 19:46:32,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 356 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) [2025-03-17 19:46:32,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:32,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-03-17 19:46:32,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:34,137 INFO L124 PetriNetUnfolderBase]: 19391/27326 cut-off events. [2025-03-17 19:46:34,137 INFO L125 PetriNetUnfolderBase]: For 2764/2764 co-relation queries the response was YES. [2025-03-17 19:46:34,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58222 conditions, 27326 events. 19391/27326 cut-off events. For 2764/2764 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 162081 event pairs, 8556 based on Foata normal form. 144/23661 useless extension candidates. Maximal degree in co-relation 58204. Up to 21928 conditions per place. [2025-03-17 19:46:34,266 INFO L140 encePairwiseOnDemand]: 74/77 looper letters, 87 selfloop transitions, 2 changer transitions 3/106 dead transitions. [2025-03-17 19:46:34,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 106 transitions, 588 flow [2025-03-17 19:46:34,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:46:34,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:46:34,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2025-03-17 19:46:34,267 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5497835497835498 [2025-03-17 19:46:34,267 INFO L175 Difference]: Start difference. First operand has 87 places, 86 transitions, 356 flow. Second operand 3 states and 127 transitions. [2025-03-17 19:46:34,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 106 transitions, 588 flow [2025-03-17 19:46:34,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 106 transitions, 587 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:46:34,269 INFO L231 Difference]: Finished difference. Result has 88 places, 87 transitions, 369 flow [2025-03-17 19:46:34,269 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=369, PETRI_PLACES=88, PETRI_TRANSITIONS=87} [2025-03-17 19:46:34,270 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 10 predicate places. [2025-03-17 19:46:34,270 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 87 transitions, 369 flow [2025-03-17 19:46:34,270 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) [2025-03-17 19:46:34,270 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:34,270 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:34,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:46:34,270 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-17 19:46:34,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:34,270 INFO L85 PathProgramCache]: Analyzing trace with hash -753094193, now seen corresponding path program 1 times [2025-03-17 19:46:34,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:34,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110436787] [2025-03-17 19:46:34,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:34,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:34,277 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:46:34,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:46:34,283 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:34,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:34,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:34,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:34,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110436787] [2025-03-17 19:46:34,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110436787] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:34,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:34,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:46:34,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766249487] [2025-03-17 19:46:34,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:34,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:46:34,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:34,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:46:34,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:46:34,313 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-03-17 19:46:34,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 369 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) [2025-03-17 19:46:34,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:34,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-03-17 19:46:34,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:36,423 INFO L124 PetriNetUnfolderBase]: 31127/44084 cut-off events. [2025-03-17 19:46:36,424 INFO L125 PetriNetUnfolderBase]: For 7389/7389 co-relation queries the response was YES. [2025-03-17 19:46:36,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94712 conditions, 44084 events. 31127/44084 cut-off events. For 7389/7389 co-relation queries the response was YES. Maximal size of possible extension queue 1205. Compared 279420 event pairs, 11139 based on Foata normal form. 1014/36753 useless extension candidates. Maximal degree in co-relation 94692. Up to 18985 conditions per place. [2025-03-17 19:46:36,671 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 135 selfloop transitions, 4 changer transitions 0/149 dead transitions. [2025-03-17 19:46:36,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 149 transitions, 803 flow [2025-03-17 19:46:36,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:46:36,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:46:36,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 175 transitions. [2025-03-17 19:46:36,672 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2025-03-17 19:46:36,672 INFO L175 Difference]: Start difference. First operand has 88 places, 87 transitions, 369 flow. Second operand 4 states and 175 transitions. [2025-03-17 19:46:36,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 149 transitions, 803 flow [2025-03-17 19:46:36,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 149 transitions, 793 flow, removed 4 selfloop flow, removed 1 redundant places. [2025-03-17 19:46:36,679 INFO L231 Difference]: Finished difference. Result has 90 places, 87 transitions, 376 flow [2025-03-17 19:46:36,680 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=376, PETRI_PLACES=90, PETRI_TRANSITIONS=87} [2025-03-17 19:46:36,680 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 12 predicate places. [2025-03-17 19:46:36,680 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 87 transitions, 376 flow [2025-03-17 19:46:36,680 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) [2025-03-17 19:46:36,680 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:36,680 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:36,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 19:46:36,681 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-17 19:46:36,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:36,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1871082799, now seen corresponding path program 1 times [2025-03-17 19:46:36,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:36,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732961830] [2025-03-17 19:46:36,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:36,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:36,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:46:36,697 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:46:36,697 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:36,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:36,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:36,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:36,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732961830] [2025-03-17 19:46:36,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732961830] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:36,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:36,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:46:36,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591307270] [2025-03-17 19:46:36,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:36,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:46:36,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:36,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:46:36,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:46:36,747 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 77 [2025-03-17 19:46:36,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 87 transitions, 376 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) [2025-03-17 19:46:36,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:36,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 77 [2025-03-17 19:46:36,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:38,774 INFO L124 PetriNetUnfolderBase]: 24303/34964 cut-off events. [2025-03-17 19:46:38,774 INFO L125 PetriNetUnfolderBase]: For 7407/7407 co-relation queries the response was YES. [2025-03-17 19:46:38,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80384 conditions, 34964 events. 24303/34964 cut-off events. For 7407/7407 co-relation queries the response was YES. Maximal size of possible extension queue 941. Compared 219443 event pairs, 7627 based on Foata normal form. 1014/31509 useless extension candidates. Maximal degree in co-relation 80363. Up to 19374 conditions per place. [2025-03-17 19:46:38,963 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 131 selfloop transitions, 6 changer transitions 0/148 dead transitions. [2025-03-17 19:46:38,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 148 transitions, 800 flow [2025-03-17 19:46:38,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:46:38,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:46:38,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2025-03-17 19:46:38,965 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5012987012987012 [2025-03-17 19:46:38,965 INFO L175 Difference]: Start difference. First operand has 90 places, 87 transitions, 376 flow. Second operand 5 states and 193 transitions. [2025-03-17 19:46:38,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 148 transitions, 800 flow [2025-03-17 19:46:39,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 148 transitions, 795 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:46:39,169 INFO L231 Difference]: Finished difference. Result has 91 places, 86 transitions, 381 flow [2025-03-17 19:46:39,169 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=91, PETRI_TRANSITIONS=86} [2025-03-17 19:46:39,169 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 13 predicate places. [2025-03-17 19:46:39,170 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 86 transitions, 381 flow [2025-03-17 19:46:39,170 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) [2025-03-17 19:46:39,170 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:39,170 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2025-03-17 19:46:39,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 19:46:39,170 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-17 19:46:39,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:39,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1947835989, now seen corresponding path program 2 times [2025-03-17 19:46:39,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:39,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023664378] [2025-03-17 19:46:39,170 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:46:39,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:39,179 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:46:39,182 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:46:39,182 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:46:39,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:39,204 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:46:39,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:39,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023664378] [2025-03-17 19:46:39,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023664378] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:39,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53214656] [2025-03-17 19:46:39,204 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:46:39,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:39,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:39,206 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) [2025-03-17 19:46:39,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-17 19:46:39,249 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 2 equivalence classes. [2025-03-17 19:46:39,256 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 4 of 16 statements. [2025-03-17 19:46:39,256 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:46:39,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:39,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:46:39,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:46:39,285 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:39,307 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:46:39,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53214656] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:39,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:39,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2025-03-17 19:46:39,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873773402] [2025-03-17 19:46:39,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:39,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:46:39,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:39,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:46:39,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:46:39,317 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-03-17 19:46:39,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 86 transitions, 381 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) [2025-03-17 19:46:39,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:39,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-03-17 19:46:39,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:40,761 INFO L124 PetriNetUnfolderBase]: 20539/28048 cut-off events. [2025-03-17 19:46:40,761 INFO L125 PetriNetUnfolderBase]: For 15199/16411 co-relation queries the response was YES. [2025-03-17 19:46:40,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68928 conditions, 28048 events. 20539/28048 cut-off events. For 15199/16411 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 157272 event pairs, 17392 based on Foata normal form. 1213/25710 useless extension candidates. Maximal degree in co-relation 68906. Up to 27262 conditions per place. [2025-03-17 19:46:40,873 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 59 selfloop transitions, 16 changer transitions 0/85 dead transitions. [2025-03-17 19:46:40,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 85 transitions, 521 flow [2025-03-17 19:46:40,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:46:40,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:46:40,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2025-03-17 19:46:40,874 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2025-03-17 19:46:40,874 INFO L175 Difference]: Start difference. First operand has 91 places, 86 transitions, 381 flow. Second operand 4 states and 112 transitions. [2025-03-17 19:46:40,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 85 transitions, 521 flow [2025-03-17 19:46:40,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 85 transitions, 509 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:46:40,880 INFO L231 Difference]: Finished difference. Result has 89 places, 85 transitions, 391 flow [2025-03-17 19:46:40,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=391, PETRI_PLACES=89, PETRI_TRANSITIONS=85} [2025-03-17 19:46:40,881 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 11 predicate places. [2025-03-17 19:46:40,881 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 85 transitions, 391 flow [2025-03-17 19:46:40,881 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) [2025-03-17 19:46:40,881 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:40,881 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2025-03-17 19:46:40,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-17 19:46:41,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:41,082 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-17 19:46:41,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:41,082 INFO L85 PathProgramCache]: Analyzing trace with hash 104631496, now seen corresponding path program 1 times [2025-03-17 19:46:41,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:41,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585675698] [2025-03-17 19:46:41,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:41,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:41,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:46:41,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:46:41,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:41,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:41,202 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:41,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:41,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585675698] [2025-03-17 19:46:41,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585675698] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:46:41,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700906190] [2025-03-17 19:46:41,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:41,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:46:41,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:46:41,204 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:46:41,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-17 19:46:41,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:46:41,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:46:41,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:41,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:41,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-17 19:46:41,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:46:41,295 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:41,296 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:46:41,407 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:46:41,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700906190] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:46:41,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:46:41,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-03-17 19:46:41,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303435354] [2025-03-17 19:46:41,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:46:41,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 19:46:41,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:41,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 19:46:41,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-03-17 19:46:41,450 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 77 [2025-03-17 19:46:41,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 85 transitions, 391 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) [2025-03-17 19:46:41,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:41,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 77 [2025-03-17 19:46:41,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:46:43,158 INFO L124 PetriNetUnfolderBase]: 20557/28120 cut-off events. [2025-03-17 19:46:43,159 INFO L125 PetriNetUnfolderBase]: For 6983/8195 co-relation queries the response was YES. [2025-03-17 19:46:43,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64323 conditions, 28120 events. 20557/28120 cut-off events. For 6983/8195 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 158143 event pairs, 17392 based on Foata normal form. 1224/25775 useless extension candidates. Maximal degree in co-relation 64301. Up to 27258 conditions per place. [2025-03-17 19:46:43,272 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 49 selfloop transitions, 62 changer transitions 0/121 dead transitions. [2025-03-17 19:46:43,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 121 transitions, 883 flow [2025-03-17 19:46:43,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-17 19:46:43,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-17 19:46:43,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 465 transitions. [2025-03-17 19:46:43,274 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2744982290436836 [2025-03-17 19:46:43,274 INFO L175 Difference]: Start difference. First operand has 89 places, 85 transitions, 391 flow. Second operand 22 states and 465 transitions. [2025-03-17 19:46:43,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 121 transitions, 883 flow [2025-03-17 19:46:43,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 121 transitions, 815 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:46:43,281 INFO L231 Difference]: Finished difference. Result has 113 places, 121 transitions, 763 flow [2025-03-17 19:46:43,281 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=763, PETRI_PLACES=113, PETRI_TRANSITIONS=121} [2025-03-17 19:46:43,281 INFO L279 CegarLoopForPetriNet]: 78 programPoint places, 35 predicate places. [2025-03-17 19:46:43,281 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 121 transitions, 763 flow [2025-03-17 19:46:43,281 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) [2025-03-17 19:46:43,281 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:46:43,282 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:46:43,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-17 19:46:43,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-17 19:46:43,482 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2025-03-17 19:46:43,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:46:43,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2031353626, now seen corresponding path program 1 times [2025-03-17 19:46:43,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:46:43,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690995120] [2025-03-17 19:46:43,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:46:43,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:46:43,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:46:43,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:46:43,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:46:43,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:46:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:46:43,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:46:43,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690995120] [2025-03-17 19:46:43,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690995120] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:46:43,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:46:43,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:46:43,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058691002] [2025-03-17 19:46:43,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:46:43,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:46:43,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:46:43,573 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:46:43,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:46:43,573 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2025-03-17 19:46:43,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 121 transitions, 763 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) [2025-03-17 19:46:43,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:46:43,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2025-03-17 19:46:43,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand