./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.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 14a9c1cac7f040ebf84fc8e1c821294cab75b8332a1643f6e05ef67dfff453ec --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-15 00:01:53,041 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-15 00:01:53,120 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-15 00:01:53,128 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-15 00:01:53,129 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-15 00:01:53,166 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-15 00:01:53,167 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-15 00:01:53,168 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-15 00:01:53,169 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-15 00:01:53,170 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-15 00:01:53,171 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-15 00:01:53,171 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-15 00:01:53,172 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-15 00:01:53,174 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-15 00:01:53,175 INFO L153 SettingsManager]: * Use SBE=true [2024-10-15 00:01:53,175 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-15 00:01:53,175 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-15 00:01:53,176 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-15 00:01:53,176 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-15 00:01:53,176 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-15 00:01:53,176 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-15 00:01:53,181 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-15 00:01:53,182 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-15 00:01:53,182 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-15 00:01:53,182 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-15 00:01:53,182 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-15 00:01:53,183 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-15 00:01:53,183 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-15 00:01:53,183 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-15 00:01:53,183 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-15 00:01:53,184 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-15 00:01:53,184 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-15 00:01:53,184 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-15 00:01:53,184 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-15 00:01:53,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:01:53,185 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-15 00:01:53,185 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-15 00:01:53,185 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-15 00:01:53,185 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-15 00:01:53,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-15 00:01:53,186 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-15 00:01:53,189 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-15 00:01:53,189 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-15 00:01:53,189 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-15 00:01:53,190 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14a9c1cac7f040ebf84fc8e1c821294cab75b8332a1643f6e05ef67dfff453ec [2024-10-15 00:01:53,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-15 00:01:53,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-15 00:01:53,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-15 00:01:53,545 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-15 00:01:53,546 INFO L274 PluginConnector]: CDTParser initialized [2024-10-15 00:01:53,548 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2024-10-15 00:01:55,192 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-15 00:01:55,430 INFO L384 CDTParser]: Found 1 translation units. [2024-10-15 00:01:55,431 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-counter-queue2.wvr.c [2024-10-15 00:01:55,444 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6cdbc2d1/637fd964cfb548c99223e15aea933610/FLAG6a33e2347 [2024-10-15 00:01:55,477 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6cdbc2d1/637fd964cfb548c99223e15aea933610 [2024-10-15 00:01:55,481 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-15 00:01:55,483 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-15 00:01:55,484 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-15 00:01:55,484 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-15 00:01:55,494 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-15 00:01:55,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:01:55" (1/1) ... [2024-10-15 00:01:55,496 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a93d464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:55, skipping insertion in model container [2024-10-15 00:01:55,496 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:01:55" (1/1) ... [2024-10-15 00:01:55,521 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-15 00:01:55,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:01:55,755 INFO L200 MainTranslator]: Completed pre-run [2024-10-15 00:01:55,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-15 00:01:55,810 INFO L204 MainTranslator]: Completed translation [2024-10-15 00:01:55,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:55 WrapperNode [2024-10-15 00:01:55,811 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-15 00:01:55,812 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-15 00:01:55,812 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-15 00:01:55,812 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-15 00:01:55,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:55" (1/1) ... [2024-10-15 00:01:55,824 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:55" (1/1) ... [2024-10-15 00:01:55,850 INFO L138 Inliner]: procedures = 25, calls = 27, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 168 [2024-10-15 00:01:55,851 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-15 00:01:55,852 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-15 00:01:55,852 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-15 00:01:55,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-15 00:01:55,864 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:55" (1/1) ... [2024-10-15 00:01:55,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:55" (1/1) ... [2024-10-15 00:01:55,866 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:55" (1/1) ... [2024-10-15 00:01:55,889 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-10-15 00:01:55,889 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:55" (1/1) ... [2024-10-15 00:01:55,890 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:55" (1/1) ... [2024-10-15 00:01:55,896 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:55" (1/1) ... [2024-10-15 00:01:55,899 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:55" (1/1) ... [2024-10-15 00:01:55,901 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:55" (1/1) ... [2024-10-15 00:01:55,902 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:55" (1/1) ... [2024-10-15 00:01:55,905 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-15 00:01:55,906 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-15 00:01:55,906 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-15 00:01:55,906 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-15 00:01:55,907 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:55" (1/1) ... [2024-10-15 00:01:55,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-15 00:01:55,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:01:55,950 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) [2024-10-15 00:01:55,955 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 [2024-10-15 00:01:56,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-15 00:01:56,010 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-15 00:01:56,010 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-15 00:01:56,010 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-15 00:01:56,010 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-15 00:01:56,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-15 00:01:56,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-15 00:01:56,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-15 00:01:56,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-15 00:01:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-15 00:01:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-15 00:01:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-15 00:01:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-15 00:01:56,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-15 00:01:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-15 00:01:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-15 00:01:56,016 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-15 00:01:56,129 INFO L238 CfgBuilder]: Building ICFG [2024-10-15 00:01:56,132 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-15 00:01:56,502 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-15 00:01:56,503 INFO L287 CfgBuilder]: Performing block encoding [2024-10-15 00:01:56,928 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-15 00:01:56,928 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-15 00:01:56,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:01:56 BoogieIcfgContainer [2024-10-15 00:01:56,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-15 00:01:56,933 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-15 00:01:56,934 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-15 00:01:56,938 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-15 00:01:56,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:01:55" (1/3) ... [2024-10-15 00:01:56,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2903032f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:01:56, skipping insertion in model container [2024-10-15 00:01:56,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:01:55" (2/3) ... [2024-10-15 00:01:56,940 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2903032f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:01:56, skipping insertion in model container [2024-10-15 00:01:56,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:01:56" (3/3) ... [2024-10-15 00:01:56,942 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue2.wvr.c [2024-10-15 00:01:56,960 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-15 00:01:56,960 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-10-15 00:01:56,961 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-15 00:01:57,049 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-15 00:01:57,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 46 transitions, 106 flow [2024-10-15 00:01:57,110 INFO L124 PetriNetUnfolderBase]: 3/44 cut-off events. [2024-10-15 00:01:57,110 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-15 00:01:57,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 44 events. 3/44 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 132 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-10-15 00:01:57,113 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 46 transitions, 106 flow [2024-10-15 00:01:57,116 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 93 flow [2024-10-15 00:01:57,124 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-15 00:01:57,131 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;@1cb9dbfe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-15 00:01:57,131 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-10-15 00:01:57,135 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-15 00:01:57,135 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-10-15 00:01:57,136 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-15 00:01:57,136 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:01:57,137 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-15 00:01:57,137 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:01:57,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:01:57,142 INFO L85 PathProgramCache]: Analyzing trace with hash 598642, now seen corresponding path program 1 times [2024-10-15 00:01:57,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:01:57,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070660749] [2024-10-15 00:01:57,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:01:57,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:01:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:01:57,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:01:57,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:01:57,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070660749] [2024-10-15 00:01:57,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070660749] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:01:57,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:01:57,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:01:57,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882044655] [2024-10-15 00:01:57,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:01:57,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:01:57,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:01:57,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:01:57,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:01:57,457 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-15 00:01:57,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:01:57,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:01:57,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-15 00:01:57,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:01:57,708 INFO L124 PetriNetUnfolderBase]: 219/470 cut-off events. [2024-10-15 00:01:57,708 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-10-15 00:01:57,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 470 events. 219/470 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2654 event pairs, 182 based on Foata normal form. 1/305 useless extension candidates. Maximal degree in co-relation 810. Up to 377 conditions per place. [2024-10-15 00:01:57,715 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 26 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2024-10-15 00:01:57,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 151 flow [2024-10-15 00:01:57,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:01:57,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:01:57,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-10-15 00:01:57,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-10-15 00:01:57,734 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 93 flow. Second operand 4 states and 88 transitions. [2024-10-15 00:01:57,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 151 flow [2024-10-15 00:01:57,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 146 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-15 00:01:57,739 INFO L231 Difference]: Finished difference. Result has 44 places, 41 transitions, 109 flow [2024-10-15 00:01:57,740 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=44, PETRI_TRANSITIONS=41} [2024-10-15 00:01:57,747 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, -2 predicate places. [2024-10-15 00:01:57,747 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 41 transitions, 109 flow [2024-10-15 00:01:57,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:01:57,747 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:01:57,747 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-15 00:01:57,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-15 00:01:57,748 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:01:57,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:01:57,748 INFO L85 PathProgramCache]: Analyzing trace with hash 654841567, now seen corresponding path program 1 times [2024-10-15 00:01:57,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:01:57,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336866416] [2024-10-15 00:01:57,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:01:57,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:01:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:01:57,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:01:57,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:01:57,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336866416] [2024-10-15 00:01:57,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336866416] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:01:57,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510760782] [2024-10-15 00:01:57,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:01:57,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:01:57,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:01:57,910 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) [2024-10-15 00:01:57,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-15 00:01:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:01:57,982 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:01:57,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:01:58,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:01:58,030 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:01:58,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510760782] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:01:58,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:01:58,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-10-15 00:01:58,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628473576] [2024-10-15 00:01:58,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:01:58,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:01:58,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:01:58,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:01:58,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 00:01:58,039 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-15 00:01:58,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 41 transitions, 109 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:01:58,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:01:58,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-15 00:01:58,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:01:58,195 INFO L124 PetriNetUnfolderBase]: 219/469 cut-off events. [2024-10-15 00:01:58,195 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-10-15 00:01:58,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 879 conditions, 469 events. 219/469 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 2662 event pairs, 182 based on Foata normal form. 1/305 useless extension candidates. Maximal degree in co-relation 852. Up to 372 conditions per place. [2024-10-15 00:01:58,200 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 22 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2024-10-15 00:01:58,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 163 flow [2024-10-15 00:01:58,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:01:58,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:01:58,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-10-15 00:01:58,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.391304347826087 [2024-10-15 00:01:58,203 INFO L175 Difference]: Start difference. First operand has 44 places, 41 transitions, 109 flow. Second operand 6 states and 108 transitions. [2024-10-15 00:01:58,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 163 flow [2024-10-15 00:01:58,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 40 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:01:58,205 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 116 flow [2024-10-15 00:01:58,205 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2024-10-15 00:01:58,205 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 1 predicate places. [2024-10-15 00:01:58,206 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 116 flow [2024-10-15 00:01:58,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:01:58,206 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:01:58,206 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-15 00:01:58,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-15 00:01:58,407 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 [2024-10-15 00:01:58,407 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:01:58,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:01:58,408 INFO L85 PathProgramCache]: Analyzing trace with hash 657169346, now seen corresponding path program 1 times [2024-10-15 00:01:58,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:01:58,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888958173] [2024-10-15 00:01:58,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:01:58,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:01:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:01:58,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:01:58,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:01:58,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888958173] [2024-10-15 00:01:58,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888958173] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:01:58,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:01:58,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-15 00:01:58,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897941893] [2024-10-15 00:01:58,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:01:58,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:01:58,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:01:58,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:01:58,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:01:58,506 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-10-15 00:01:58,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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) [2024-10-15 00:01:58,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:01:58,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-10-15 00:01:58,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:01:58,693 INFO L124 PetriNetUnfolderBase]: 313/678 cut-off events. [2024-10-15 00:01:58,693 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-10-15 00:01:58,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276 conditions, 678 events. 313/678 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3922 event pairs, 244 based on Foata normal form. 0/441 useless extension candidates. Maximal degree in co-relation 958. Up to 418 conditions per place. [2024-10-15 00:01:58,701 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 48 selfloop transitions, 5 changer transitions 2/66 dead transitions. [2024-10-15 00:01:58,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 66 transitions, 284 flow [2024-10-15 00:01:58,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:01:58,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:01:58,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-10-15 00:01:58,707 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5478260869565217 [2024-10-15 00:01:58,707 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 116 flow. Second operand 5 states and 126 transitions. [2024-10-15 00:01:58,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 66 transitions, 284 flow [2024-10-15 00:01:58,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 66 transitions, 262 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-10-15 00:01:58,712 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 119 flow [2024-10-15 00:01:58,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2024-10-15 00:01:58,713 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-10-15 00:01:58,714 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 119 flow [2024-10-15 00:01:58,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 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) [2024-10-15 00:01:58,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:01:58,714 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-10-15 00:01:58,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-15 00:01:58,715 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:01:58,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:01:58,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1174747332, now seen corresponding path program 1 times [2024-10-15 00:01:58,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:01:58,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554676013] [2024-10-15 00:01:58,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:01:58,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:01:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:01:58,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:01:58,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:01:58,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554676013] [2024-10-15 00:01:58,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554676013] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:01:58,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912541403] [2024-10-15 00:01:58,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:01:58,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:01:58,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:01:58,792 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) [2024-10-15 00:01:58,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-15 00:01:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:01:58,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:01:58,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:01:58,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:01:58,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:01:58,939 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:01:58,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912541403] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:01:58,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:01:58,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-10-15 00:01:58,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278200647] [2024-10-15 00:01:58,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:01:58,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:01:58,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:01:58,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:01:58,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:01:58,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-15 00:01:58,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 119 flow. Second operand has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:01:58,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:01:58,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-15 00:01:58,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:01:59,129 INFO L124 PetriNetUnfolderBase]: 290/642 cut-off events. [2024-10-15 00:01:59,132 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2024-10-15 00:01:59,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 642 events. 290/642 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 3784 event pairs, 244 based on Foata normal form. 3/438 useless extension candidates. Maximal degree in co-relation 936. Up to 510 conditions per place. [2024-10-15 00:01:59,137 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 27 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2024-10-15 00:01:59,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 51 transitions, 229 flow [2024-10-15 00:01:59,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:01:59,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:01:59,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-10-15 00:01:59,141 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3717391304347826 [2024-10-15 00:01:59,141 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 119 flow. Second operand 10 states and 171 transitions. [2024-10-15 00:01:59,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 51 transitions, 229 flow [2024-10-15 00:01:59,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:01:59,145 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 188 flow [2024-10-15 00:01:59,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=188, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-10-15 00:01:59,147 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 12 predicate places. [2024-10-15 00:01:59,148 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 188 flow [2024-10-15 00:01:59,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:01:59,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:01:59,148 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:01:59,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-15 00:01:59,349 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,SelfDestructingSolverStorable3 [2024-10-15 00:01:59,349 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:01:59,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:01:59,350 INFO L85 PathProgramCache]: Analyzing trace with hash 169449540, now seen corresponding path program 1 times [2024-10-15 00:01:59,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:01:59,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276496846] [2024-10-15 00:01:59,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:01:59,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:01:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:01:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:01:59,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:01:59,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276496846] [2024-10-15 00:01:59,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276496846] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:01:59,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:01:59,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-15 00:01:59,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333350333] [2024-10-15 00:01:59,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:01:59,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-15 00:01:59,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:01:59,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-15 00:01:59,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-15 00:01:59,461 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-10-15 00:01:59,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:01:59,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:01:59,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-10-15 00:01:59,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:01:59,594 INFO L124 PetriNetUnfolderBase]: 268/551 cut-off events. [2024-10-15 00:01:59,594 INFO L125 PetriNetUnfolderBase]: For 124/142 co-relation queries the response was YES. [2024-10-15 00:01:59,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1167 conditions, 551 events. 268/551 cut-off events. For 124/142 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 2924 event pairs, 219 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 1131. Up to 425 conditions per place. [2024-10-15 00:01:59,597 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 35 selfloop transitions, 2 changer transitions 14/62 dead transitions. [2024-10-15 00:01:59,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 62 transitions, 325 flow [2024-10-15 00:01:59,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-15 00:01:59,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-15 00:01:59,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-10-15 00:01:59,600 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49130434782608695 [2024-10-15 00:01:59,600 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 188 flow. Second operand 5 states and 113 transitions. [2024-10-15 00:01:59,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 62 transitions, 325 flow [2024-10-15 00:01:59,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 62 transitions, 314 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-10-15 00:01:59,603 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 170 flow [2024-10-15 00:01:59,606 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2024-10-15 00:01:59,606 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 16 predicate places. [2024-10-15 00:01:59,607 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 170 flow [2024-10-15 00:01:59,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:01:59,608 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:01:59,608 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:01:59,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-15 00:01:59,608 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:01:59,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:01:59,609 INFO L85 PathProgramCache]: Analyzing trace with hash 646558774, now seen corresponding path program 1 times [2024-10-15 00:01:59,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:01:59,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094764420] [2024-10-15 00:01:59,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:01:59,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:01:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:01:59,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:01:59,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:01:59,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094764420] [2024-10-15 00:01:59,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094764420] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:01:59,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605699223] [2024-10-15 00:01:59,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:01:59,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:01:59,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:01:59,871 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) [2024-10-15 00:01:59,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-15 00:01:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:01:59,933 INFO L255 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-15 00:01:59,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:01:59,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:02:00,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:00,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:00,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-10-15 00:02:00,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-15 00:02:00,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:00,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605699223] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:00,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:00,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-10-15 00:02:00,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237674133] [2024-10-15 00:02:00,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:00,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-15 00:02:00,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:00,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-15 00:02:00,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-15 00:02:00,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-10-15 00:02:00,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 170 flow. Second operand has 13 states, 13 states have (on average 16.53846153846154) internal successors, (215), 13 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:00,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:00,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-10-15 00:02:00,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:00,383 INFO L124 PetriNetUnfolderBase]: 369/831 cut-off events. [2024-10-15 00:02:00,383 INFO L125 PetriNetUnfolderBase]: For 107/140 co-relation queries the response was YES. [2024-10-15 00:02:00,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1656 conditions, 831 events. 369/831 cut-off events. For 107/140 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5232 event pairs, 86 based on Foata normal form. 0/544 useless extension candidates. Maximal degree in co-relation 1632. Up to 220 conditions per place. [2024-10-15 00:02:00,388 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 49 selfloop transitions, 15 changer transitions 0/76 dead transitions. [2024-10-15 00:02:00,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 368 flow [2024-10-15 00:02:00,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 00:02:00,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-15 00:02:00,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-10-15 00:02:00,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-10-15 00:02:00,390 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 170 flow. Second operand 8 states and 176 transitions. [2024-10-15 00:02:00,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 368 flow [2024-10-15 00:02:00,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 342 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-10-15 00:02:00,395 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 223 flow [2024-10-15 00:02:00,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=223, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2024-10-15 00:02:00,396 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 15 predicate places. [2024-10-15 00:02:00,396 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 223 flow [2024-10-15 00:02:00,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 16.53846153846154) internal successors, (215), 13 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:00,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:00,396 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:00,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-15 00:02:00,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:00,597 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:00,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:00,598 INFO L85 PathProgramCache]: Analyzing trace with hash 646558776, now seen corresponding path program 1 times [2024-10-15 00:02:00,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:00,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085255682] [2024-10-15 00:02:00,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:00,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:00,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:00,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:00,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085255682] [2024-10-15 00:02:00,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085255682] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:00,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:00,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-15 00:02:00,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421492330] [2024-10-15 00:02:00,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:00,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:02:00,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:00,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:02:00,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:02:00,675 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-10-15 00:02:00,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:00,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:00,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-10-15 00:02:00,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:00,821 INFO L124 PetriNetUnfolderBase]: 413/920 cut-off events. [2024-10-15 00:02:00,822 INFO L125 PetriNetUnfolderBase]: For 359/359 co-relation queries the response was YES. [2024-10-15 00:02:00,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2106 conditions, 920 events. 413/920 cut-off events. For 359/359 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5778 event pairs, 119 based on Foata normal form. 0/634 useless extension candidates. Maximal degree in co-relation 2074. Up to 579 conditions per place. [2024-10-15 00:02:00,827 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 52 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2024-10-15 00:02:00,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 67 transitions, 374 flow [2024-10-15 00:02:00,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:02:00,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:02:00,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-10-15 00:02:00,828 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2024-10-15 00:02:00,828 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 223 flow. Second operand 3 states and 87 transitions. [2024-10-15 00:02:00,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 67 transitions, 374 flow [2024-10-15 00:02:00,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 364 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-15 00:02:00,832 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 240 flow [2024-10-15 00:02:00,832 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2024-10-15 00:02:00,834 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2024-10-15 00:02:00,834 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 240 flow [2024-10-15 00:02:00,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:00,834 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:00,834 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:00,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-15 00:02:00,835 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:00,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:00,836 INFO L85 PathProgramCache]: Analyzing trace with hash 646558773, now seen corresponding path program 1 times [2024-10-15 00:02:00,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:00,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989378946] [2024-10-15 00:02:00,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:00,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:00,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:00,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:00,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989378946] [2024-10-15 00:02:00,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989378946] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:00,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265223282] [2024-10-15 00:02:00,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:00,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:00,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:00,996 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) [2024-10-15 00:02:00,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-15 00:02:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:01,066 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-15 00:02:01,068 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:01,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:02:01,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:01,143 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:01,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-15 00:02:01,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-10-15 00:02:01,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:01,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265223282] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:01,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:01,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-15 00:02:01,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044723721] [2024-10-15 00:02:01,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:01,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-15 00:02:01,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:01,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-15 00:02:01,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-15 00:02:01,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-10-15 00:02:01,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 240 flow. Second operand has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:01,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:01,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-10-15 00:02:01,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:01,492 INFO L124 PetriNetUnfolderBase]: 375/824 cut-off events. [2024-10-15 00:02:01,492 INFO L125 PetriNetUnfolderBase]: For 392/392 co-relation queries the response was YES. [2024-10-15 00:02:01,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2072 conditions, 824 events. 375/824 cut-off events. For 392/392 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5123 event pairs, 99 based on Foata normal form. 26/647 useless extension candidates. Maximal degree in co-relation 2041. Up to 262 conditions per place. [2024-10-15 00:02:01,496 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 51 selfloop transitions, 15 changer transitions 0/78 dead transitions. [2024-10-15 00:02:01,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 433 flow [2024-10-15 00:02:01,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 00:02:01,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-15 00:02:01,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-10-15 00:02:01,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47554347826086957 [2024-10-15 00:02:01,498 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 240 flow. Second operand 8 states and 175 transitions. [2024-10-15 00:02:01,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 433 flow [2024-10-15 00:02:01,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 429 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:01,500 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 263 flow [2024-10-15 00:02:01,501 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=263, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2024-10-15 00:02:01,501 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2024-10-15 00:02:01,501 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 263 flow [2024-10-15 00:02:01,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.454545454545453) internal successors, (181), 11 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:01,502 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:01,502 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:01,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-15 00:02:01,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:01,703 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:01,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:01,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1427253541, now seen corresponding path program 1 times [2024-10-15 00:02:01,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:01,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089154666] [2024-10-15 00:02:01,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:01,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:01,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:01,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:01,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089154666] [2024-10-15 00:02:01,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089154666] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:01,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:01,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:02:01,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802142208] [2024-10-15 00:02:01,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:01,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:02:01,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:01,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:02:01,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:02:01,780 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-10-15 00:02:01,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 263 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:01,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:01,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-10-15 00:02:01,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:01,978 INFO L124 PetriNetUnfolderBase]: 479/920 cut-off events. [2024-10-15 00:02:01,978 INFO L125 PetriNetUnfolderBase]: For 729/729 co-relation queries the response was YES. [2024-10-15 00:02:01,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2524 conditions, 920 events. 479/920 cut-off events. For 729/729 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5163 event pairs, 186 based on Foata normal form. 36/772 useless extension candidates. Maximal degree in co-relation 2490. Up to 582 conditions per place. [2024-10-15 00:02:01,985 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 66 selfloop transitions, 4 changer transitions 0/79 dead transitions. [2024-10-15 00:02:01,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 79 transitions, 469 flow [2024-10-15 00:02:01,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:02:01,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:02:01,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-10-15 00:02:01,986 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5760869565217391 [2024-10-15 00:02:01,986 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 263 flow. Second operand 4 states and 106 transitions. [2024-10-15 00:02:01,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 79 transitions, 469 flow [2024-10-15 00:02:01,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 79 transitions, 456 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-15 00:02:01,990 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 271 flow [2024-10-15 00:02:01,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-10-15 00:02:01,990 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 20 predicate places. [2024-10-15 00:02:01,991 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 271 flow [2024-10-15 00:02:01,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:01,991 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:01,991 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:01,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-15 00:02:01,991 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:01,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:01,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1437376521, now seen corresponding path program 1 times [2024-10-15 00:02:01,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:01,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009139232] [2024-10-15 00:02:01,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:01,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:02,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:02,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009139232] [2024-10-15 00:02:02,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009139232] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:02,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769558236] [2024-10-15 00:02:02,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:02,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:02,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:02,162 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) [2024-10-15 00:02:02,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-15 00:02:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:02,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-15 00:02:02,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:02,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:02:02,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:02,332 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:02,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-10-15 00:02:02,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-15 00:02:02,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:02,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769558236] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:02,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:02,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-10-15 00:02:02,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193790218] [2024-10-15 00:02:02,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:02,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-15 00:02:02,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:02,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-15 00:02:02,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-15 00:02:02,430 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-10-15 00:02:02,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 271 flow. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:02,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:02,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-10-15 00:02:02,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:02,704 INFO L124 PetriNetUnfolderBase]: 521/1113 cut-off events. [2024-10-15 00:02:02,704 INFO L125 PetriNetUnfolderBase]: For 1242/1242 co-relation queries the response was YES. [2024-10-15 00:02:02,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3102 conditions, 1113 events. 521/1113 cut-off events. For 1242/1242 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6899 event pairs, 127 based on Foata normal form. 0/858 useless extension candidates. Maximal degree in co-relation 3069. Up to 335 conditions per place. [2024-10-15 00:02:02,717 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 65 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2024-10-15 00:02:02,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 93 transitions, 647 flow [2024-10-15 00:02:02,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 00:02:02,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-15 00:02:02,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-10-15 00:02:02,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47282608695652173 [2024-10-15 00:02:02,719 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 271 flow. Second operand 8 states and 174 transitions. [2024-10-15 00:02:02,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 93 transitions, 647 flow [2024-10-15 00:02:02,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 93 transitions, 629 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:02:02,724 INFO L231 Difference]: Finished difference. Result has 73 places, 62 transitions, 340 flow [2024-10-15 00:02:02,724 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=340, PETRI_PLACES=73, PETRI_TRANSITIONS=62} [2024-10-15 00:02:02,725 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2024-10-15 00:02:02,725 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 62 transitions, 340 flow [2024-10-15 00:02:02,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 11 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:02,726 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:02,726 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:02,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-15 00:02:02,926 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,SelfDestructingSolverStorable9 [2024-10-15 00:02:02,927 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:02,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:02,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1437376520, now seen corresponding path program 1 times [2024-10-15 00:02:02,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:02,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687708514] [2024-10-15 00:02:02,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:02,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:03,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:03,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:03,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687708514] [2024-10-15 00:02:03,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687708514] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:03,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310317576] [2024-10-15 00:02:03,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:03,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:03,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:03,158 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:03,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-15 00:02:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:03,237 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-15 00:02:03,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:03,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:02:03,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:03,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:03,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-15 00:02:03,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-10-15 00:02:03,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:03,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310317576] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:03,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:03,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-10-15 00:02:03,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996424504] [2024-10-15 00:02:03,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:03,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-15 00:02:03,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:03,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-15 00:02:03,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-15 00:02:03,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-10-15 00:02:03,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 62 transitions, 340 flow. Second operand has 13 states, 13 states have (on average 17.0) internal successors, (221), 13 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:03,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:03,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-10-15 00:02:03,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:03,752 INFO L124 PetriNetUnfolderBase]: 486/1054 cut-off events. [2024-10-15 00:02:03,752 INFO L125 PetriNetUnfolderBase]: For 1259/1259 co-relation queries the response was YES. [2024-10-15 00:02:03,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3329 conditions, 1054 events. 486/1054 cut-off events. For 1259/1259 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6536 event pairs, 127 based on Foata normal form. 24/852 useless extension candidates. Maximal degree in co-relation 3291. Up to 335 conditions per place. [2024-10-15 00:02:03,764 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 64 selfloop transitions, 15 changer transitions 0/92 dead transitions. [2024-10-15 00:02:03,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 92 transitions, 680 flow [2024-10-15 00:02:03,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-15 00:02:03,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-15 00:02:03,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-10-15 00:02:03,767 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4701086956521739 [2024-10-15 00:02:03,767 INFO L175 Difference]: Start difference. First operand has 73 places, 62 transitions, 340 flow. Second operand 8 states and 173 transitions. [2024-10-15 00:02:03,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 92 transitions, 680 flow [2024-10-15 00:02:03,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 92 transitions, 670 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-15 00:02:03,772 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 356 flow [2024-10-15 00:02:03,772 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=356, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2024-10-15 00:02:03,773 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 30 predicate places. [2024-10-15 00:02:03,773 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 356 flow [2024-10-15 00:02:03,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.0) internal successors, (221), 13 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:03,773 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:03,773 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:03,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-15 00:02:03,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:03,979 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:03,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:03,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1660656637, now seen corresponding path program 1 times [2024-10-15 00:02:03,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:03,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091675247] [2024-10-15 00:02:03,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:03,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:04,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:04,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:04,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091675247] [2024-10-15 00:02:04,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091675247] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:04,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:04,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-15 00:02:04,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786163673] [2024-10-15 00:02:04,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:04,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-15 00:02:04,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:04,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-15 00:02:04,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-15 00:02:04,073 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-10-15 00:02:04,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 356 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:04,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:04,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-10-15 00:02:04,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:04,376 INFO L124 PetriNetUnfolderBase]: 642/1176 cut-off events. [2024-10-15 00:02:04,376 INFO L125 PetriNetUnfolderBase]: For 1840/1840 co-relation queries the response was YES. [2024-10-15 00:02:04,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4165 conditions, 1176 events. 642/1176 cut-off events. For 1840/1840 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6568 event pairs, 330 based on Foata normal form. 50/1018 useless extension candidates. Maximal degree in co-relation 4127. Up to 795 conditions per place. [2024-10-15 00:02:04,390 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 79 selfloop transitions, 4 changer transitions 0/93 dead transitions. [2024-10-15 00:02:04,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 93 transitions, 710 flow [2024-10-15 00:02:04,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-15 00:02:04,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-15 00:02:04,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-10-15 00:02:04,392 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5652173913043478 [2024-10-15 00:02:04,392 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 356 flow. Second operand 4 states and 104 transitions. [2024-10-15 00:02:04,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 93 transitions, 710 flow [2024-10-15 00:02:04,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 93 transitions, 697 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-15 00:02:04,398 INFO L231 Difference]: Finished difference. Result has 76 places, 62 transitions, 364 flow [2024-10-15 00:02:04,398 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=364, PETRI_PLACES=76, PETRI_TRANSITIONS=62} [2024-10-15 00:02:04,399 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 30 predicate places. [2024-10-15 00:02:04,400 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 62 transitions, 364 flow [2024-10-15 00:02:04,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:04,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:04,401 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:04,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-15 00:02:04,401 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:04,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:04,402 INFO L85 PathProgramCache]: Analyzing trace with hash 846914317, now seen corresponding path program 1 times [2024-10-15 00:02:04,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:04,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025407720] [2024-10-15 00:02:04,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:04,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:04,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:04,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:04,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025407720] [2024-10-15 00:02:04,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025407720] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:04,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:04,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:02:04,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996461234] [2024-10-15 00:02:04,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:04,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:02:04,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:04,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:02:04,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:02:04,498 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-10-15 00:02:04,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 62 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:04,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:04,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-10-15 00:02:04,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:04,656 INFO L124 PetriNetUnfolderBase]: 367/769 cut-off events. [2024-10-15 00:02:04,656 INFO L125 PetriNetUnfolderBase]: For 1579/1579 co-relation queries the response was YES. [2024-10-15 00:02:04,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2798 conditions, 769 events. 367/769 cut-off events. For 1579/1579 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4179 event pairs, 274 based on Foata normal form. 0/683 useless extension candidates. Maximal degree in co-relation 2761. Up to 611 conditions per place. [2024-10-15 00:02:04,664 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 43 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2024-10-15 00:02:04,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 58 transitions, 424 flow [2024-10-15 00:02:04,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:02:04,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:02:04,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-10-15 00:02:04,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-10-15 00:02:04,666 INFO L175 Difference]: Start difference. First operand has 76 places, 62 transitions, 364 flow. Second operand 3 states and 70 transitions. [2024-10-15 00:02:04,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 58 transitions, 424 flow [2024-10-15 00:02:04,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 58 transitions, 418 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-15 00:02:04,670 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 332 flow [2024-10-15 00:02:04,671 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=332, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2024-10-15 00:02:04,672 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2024-10-15 00:02:04,672 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 332 flow [2024-10-15 00:02:04,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:04,673 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:04,673 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:04,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-15 00:02:04,673 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:04,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:04,674 INFO L85 PathProgramCache]: Analyzing trace with hash 846914318, now seen corresponding path program 1 times [2024-10-15 00:02:04,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:04,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901332659] [2024-10-15 00:02:04,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:04,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:04,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-15 00:02:04,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:04,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901332659] [2024-10-15 00:02:04,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901332659] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:04,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-15 00:02:04,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-15 00:02:04,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970326110] [2024-10-15 00:02:04,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:04,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-15 00:02:04,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:04,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-15 00:02:04,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-15 00:02:04,775 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 46 [2024-10-15 00:02:04,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:04,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:04,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 46 [2024-10-15 00:02:04,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:04,877 INFO L124 PetriNetUnfolderBase]: 266/586 cut-off events. [2024-10-15 00:02:04,878 INFO L125 PetriNetUnfolderBase]: For 1210/1210 co-relation queries the response was YES. [2024-10-15 00:02:04,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2016 conditions, 586 events. 266/586 cut-off events. For 1210/1210 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2915 event pairs, 187 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 1995. Up to 444 conditions per place. [2024-10-15 00:02:04,884 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 39 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2024-10-15 00:02:04,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 54 transitions, 384 flow [2024-10-15 00:02:04,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-15 00:02:04,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-15 00:02:04,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2024-10-15 00:02:04,886 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-10-15 00:02:04,886 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 332 flow. Second operand 3 states and 68 transitions. [2024-10-15 00:02:04,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 54 transitions, 384 flow [2024-10-15 00:02:04,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 54 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:04,890 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 305 flow [2024-10-15 00:02:04,890 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=305, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2024-10-15 00:02:04,891 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2024-10-15 00:02:04,891 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 305 flow [2024-10-15 00:02:04,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:04,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:04,891 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:04,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-15 00:02:04,892 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:04,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:04,892 INFO L85 PathProgramCache]: Analyzing trace with hash 866604724, now seen corresponding path program 1 times [2024-10-15 00:02:04,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:04,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937537488] [2024-10-15 00:02:04,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:04,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:05,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:05,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:05,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937537488] [2024-10-15 00:02:05,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937537488] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:05,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687707120] [2024-10-15 00:02:05,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:05,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:05,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:05,021 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:05,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-15 00:02:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:05,113 INFO L255 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 00:02:05,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:05,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:05,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:05,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687707120] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:05,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:05,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-15 00:02:05,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377531947] [2024-10-15 00:02:05,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:05,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-15 00:02:05,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:05,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-15 00:02:05,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-10-15 00:02:05,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-10-15 00:02:05,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 305 flow. Second operand has 20 states, 20 states have (on average 10.55) internal successors, (211), 20 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:05,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:05,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-10-15 00:02:05,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:05,885 INFO L124 PetriNetUnfolderBase]: 651/1301 cut-off events. [2024-10-15 00:02:05,885 INFO L125 PetriNetUnfolderBase]: For 2545/2545 co-relation queries the response was YES. [2024-10-15 00:02:05,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4430 conditions, 1301 events. 651/1301 cut-off events. For 2545/2545 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7222 event pairs, 385 based on Foata normal form. 18/1311 useless extension candidates. Maximal degree in co-relation 4408. Up to 716 conditions per place. [2024-10-15 00:02:05,900 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 82 selfloop transitions, 16 changer transitions 8/114 dead transitions. [2024-10-15 00:02:05,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 114 transitions, 855 flow [2024-10-15 00:02:05,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:02:05,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:02:05,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-10-15 00:02:05,902 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3630434782608696 [2024-10-15 00:02:05,902 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 305 flow. Second operand 10 states and 167 transitions. [2024-10-15 00:02:05,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 114 transitions, 855 flow [2024-10-15 00:02:05,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 114 transitions, 854 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-15 00:02:05,909 INFO L231 Difference]: Finished difference. Result has 85 places, 59 transitions, 393 flow [2024-10-15 00:02:05,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=393, PETRI_PLACES=85, PETRI_TRANSITIONS=59} [2024-10-15 00:02:05,910 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 39 predicate places. [2024-10-15 00:02:05,910 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 59 transitions, 393 flow [2024-10-15 00:02:05,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.55) internal successors, (211), 20 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:05,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:05,910 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-10-15 00:02:05,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:06,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:06,115 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:06,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:06,115 INFO L85 PathProgramCache]: Analyzing trace with hash -2138803127, now seen corresponding path program 2 times [2024-10-15 00:02:06,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:06,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947062865] [2024-10-15 00:02:06,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:06,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:06,236 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:06,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:06,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947062865] [2024-10-15 00:02:06,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947062865] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:06,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645199905] [2024-10-15 00:02:06,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:02:06,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:06,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:06,243 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:06,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-15 00:02:06,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-15 00:02:06,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:06,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-15 00:02:06,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:06,357 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:02:06,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:06,383 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-10-15 00:02:06,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645199905] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:06,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:06,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2024-10-15 00:02:06,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421920170] [2024-10-15 00:02:06,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:06,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-15 00:02:06,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:06,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-15 00:02:06,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-10-15 00:02:06,398 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-10-15 00:02:06,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 59 transitions, 393 flow. Second operand has 14 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:06,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:06,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-10-15 00:02:06,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:06,732 INFO L124 PetriNetUnfolderBase]: 426/953 cut-off events. [2024-10-15 00:02:06,732 INFO L125 PetriNetUnfolderBase]: For 2818/2845 co-relation queries the response was YES. [2024-10-15 00:02:06,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3531 conditions, 953 events. 426/953 cut-off events. For 2818/2845 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5378 event pairs, 302 based on Foata normal form. 17/941 useless extension candidates. Maximal degree in co-relation 3504. Up to 708 conditions per place. [2024-10-15 00:02:06,742 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 29 selfloop transitions, 18 changer transitions 0/61 dead transitions. [2024-10-15 00:02:06,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 61 transitions, 503 flow [2024-10-15 00:02:06,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 00:02:06,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-15 00:02:06,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 219 transitions. [2024-10-15 00:02:06,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34006211180124224 [2024-10-15 00:02:06,745 INFO L175 Difference]: Start difference. First operand has 85 places, 59 transitions, 393 flow. Second operand 14 states and 219 transitions. [2024-10-15 00:02:06,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 61 transitions, 503 flow [2024-10-15 00:02:06,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 61 transitions, 472 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-10-15 00:02:06,751 INFO L231 Difference]: Finished difference. Result has 89 places, 61 transitions, 414 flow [2024-10-15 00:02:06,751 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=414, PETRI_PLACES=89, PETRI_TRANSITIONS=61} [2024-10-15 00:02:06,751 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 43 predicate places. [2024-10-15 00:02:06,752 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 61 transitions, 414 flow [2024-10-15 00:02:06,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:06,752 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:06,752 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:06,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:06,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-10-15 00:02:06,953 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:06,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:06,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1105780607, now seen corresponding path program 1 times [2024-10-15 00:02:06,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:06,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110721565] [2024-10-15 00:02:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:06,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:07,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:07,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:07,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110721565] [2024-10-15 00:02:07,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110721565] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:07,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94787537] [2024-10-15 00:02:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:07,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:07,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:07,087 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:07,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-15 00:02:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:07,175 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-15 00:02:07,176 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:07,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:07,297 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:07,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94787537] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:07,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:07,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-10-15 00:02:07,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839329735] [2024-10-15 00:02:07,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:07,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-15 00:02:07,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:07,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-15 00:02:07,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-10-15 00:02:07,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-10-15 00:02:07,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 61 transitions, 414 flow. Second operand has 20 states, 20 states have (on average 10.65) internal successors, (213), 20 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:07,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:07,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-10-15 00:02:07,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:07,855 INFO L124 PetriNetUnfolderBase]: 565/1018 cut-off events. [2024-10-15 00:02:07,855 INFO L125 PetriNetUnfolderBase]: For 2927/2969 co-relation queries the response was YES. [2024-10-15 00:02:07,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3924 conditions, 1018 events. 565/1018 cut-off events. For 2927/2969 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4979 event pairs, 356 based on Foata normal form. 24/1035 useless extension candidates. Maximal degree in co-relation 3900. Up to 708 conditions per place. [2024-10-15 00:02:07,868 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 35 selfloop transitions, 12 changer transitions 43/98 dead transitions. [2024-10-15 00:02:07,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 98 transitions, 829 flow [2024-10-15 00:02:07,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:02:07,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:02:07,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-10-15 00:02:07,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.33695652173913043 [2024-10-15 00:02:07,871 INFO L175 Difference]: Start difference. First operand has 89 places, 61 transitions, 414 flow. Second operand 10 states and 155 transitions. [2024-10-15 00:02:07,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 98 transitions, 829 flow [2024-10-15 00:02:07,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 98 transitions, 753 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-10-15 00:02:07,879 INFO L231 Difference]: Finished difference. Result has 89 places, 55 transitions, 312 flow [2024-10-15 00:02:07,879 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=312, PETRI_PLACES=89, PETRI_TRANSITIONS=55} [2024-10-15 00:02:07,879 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 43 predicate places. [2024-10-15 00:02:07,879 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 55 transitions, 312 flow [2024-10-15 00:02:07,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.65) internal successors, (213), 20 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:07,880 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:07,880 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:07,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:08,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-15 00:02:08,081 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:08,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:08,081 INFO L85 PathProgramCache]: Analyzing trace with hash -97825753, now seen corresponding path program 2 times [2024-10-15 00:02:08,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:08,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146601593] [2024-10-15 00:02:08,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:08,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:08,431 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:08,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:08,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146601593] [2024-10-15 00:02:08,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146601593] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:08,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918322069] [2024-10-15 00:02:08,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:02:08,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:08,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:08,434 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:08,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-15 00:02:08,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 00:02:08,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:08,522 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-15 00:02:08,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:08,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:02:08,623 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:08,623 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:08,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-15 00:02:08,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-10-15 00:02:08,776 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:08,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918322069] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:08,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:08,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-15 00:02:08,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679062759] [2024-10-15 00:02:08,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:08,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 00:02:08,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:08,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 00:02:08,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-10-15 00:02:08,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-15 00:02:08,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 55 transitions, 312 flow. Second operand has 19 states, 19 states have (on average 11.368421052631579) internal successors, (216), 19 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:08,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:08,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-15 00:02:08,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:09,500 INFO L124 PetriNetUnfolderBase]: 564/1097 cut-off events. [2024-10-15 00:02:09,501 INFO L125 PetriNetUnfolderBase]: For 2937/2974 co-relation queries the response was YES. [2024-10-15 00:02:09,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4060 conditions, 1097 events. 564/1097 cut-off events. For 2937/2974 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 5685 event pairs, 86 based on Foata normal form. 18/1110 useless extension candidates. Maximal degree in co-relation 4034. Up to 276 conditions per place. [2024-10-15 00:02:09,511 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 105 selfloop transitions, 20 changer transitions 0/134 dead transitions. [2024-10-15 00:02:09,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 134 transitions, 1060 flow [2024-10-15 00:02:09,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 00:02:09,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-15 00:02:09,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 234 transitions. [2024-10-15 00:02:09,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36335403726708076 [2024-10-15 00:02:09,513 INFO L175 Difference]: Start difference. First operand has 89 places, 55 transitions, 312 flow. Second operand 14 states and 234 transitions. [2024-10-15 00:02:09,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 134 transitions, 1060 flow [2024-10-15 00:02:09,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 134 transitions, 962 flow, removed 37 selfloop flow, removed 13 redundant places. [2024-10-15 00:02:09,520 INFO L231 Difference]: Finished difference. Result has 83 places, 59 transitions, 350 flow [2024-10-15 00:02:09,521 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=350, PETRI_PLACES=83, PETRI_TRANSITIONS=59} [2024-10-15 00:02:09,522 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 37 predicate places. [2024-10-15 00:02:09,522 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 59 transitions, 350 flow [2024-10-15 00:02:09,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.368421052631579) internal successors, (216), 19 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:09,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:09,522 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:09,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-15 00:02:09,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-15 00:02:09,727 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:09,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:09,727 INFO L85 PathProgramCache]: Analyzing trace with hash -97825752, now seen corresponding path program 1 times [2024-10-15 00:02:09,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:09,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749381440] [2024-10-15 00:02:09,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:09,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:10,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:10,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:10,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749381440] [2024-10-15 00:02:10,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749381440] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:10,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101749188] [2024-10-15 00:02:10,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:10,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:10,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:10,053 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:10,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-15 00:02:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:10,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-15 00:02:10,147 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:10,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-15 00:02:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:10,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:10,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-15 00:02:10,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-10-15 00:02:10,407 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:10,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101749188] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:10,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:10,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-10-15 00:02:10,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138802680] [2024-10-15 00:02:10,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:10,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-15 00:02:10,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:10,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-15 00:02:10,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2024-10-15 00:02:10,551 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-15 00:02:10,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 59 transitions, 350 flow. Second operand has 23 states, 23 states have (on average 11.434782608695652) internal successors, (263), 23 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:10,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:10,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-15 00:02:10,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:11,195 INFO L124 PetriNetUnfolderBase]: 536/1050 cut-off events. [2024-10-15 00:02:11,196 INFO L125 PetriNetUnfolderBase]: For 3148/3148 co-relation queries the response was YES. [2024-10-15 00:02:11,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3879 conditions, 1050 events. 536/1050 cut-off events. For 3148/3148 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 5334 event pairs, 75 based on Foata normal form. 18/1063 useless extension candidates. Maximal degree in co-relation 3859. Up to 262 conditions per place. [2024-10-15 00:02:11,204 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 104 selfloop transitions, 20 changer transitions 0/133 dead transitions. [2024-10-15 00:02:11,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 133 transitions, 1014 flow [2024-10-15 00:02:11,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 00:02:11,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-15 00:02:11,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 233 transitions. [2024-10-15 00:02:11,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36180124223602483 [2024-10-15 00:02:11,206 INFO L175 Difference]: Start difference. First operand has 83 places, 59 transitions, 350 flow. Second operand 14 states and 233 transitions. [2024-10-15 00:02:11,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 133 transitions, 1014 flow [2024-10-15 00:02:11,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 133 transitions, 977 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-10-15 00:02:11,212 INFO L231 Difference]: Finished difference. Result has 87 places, 58 transitions, 345 flow [2024-10-15 00:02:11,212 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=345, PETRI_PLACES=87, PETRI_TRANSITIONS=58} [2024-10-15 00:02:11,212 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 41 predicate places. [2024-10-15 00:02:11,213 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 58 transitions, 345 flow [2024-10-15 00:02:11,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.434782608695652) internal successors, (263), 23 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:11,213 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:11,213 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:11,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-15 00:02:11,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:11,418 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:11,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:11,418 INFO L85 PathProgramCache]: Analyzing trace with hash -210533068, now seen corresponding path program 2 times [2024-10-15 00:02:11,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:11,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988429626] [2024-10-15 00:02:11,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:11,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:11,753 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:11,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:11,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988429626] [2024-10-15 00:02:11,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988429626] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:11,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289350708] [2024-10-15 00:02:11,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:02:11,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:11,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:11,756 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:11,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-15 00:02:11,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 00:02:11,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:11,857 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-15 00:02:11,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:11,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:02:11,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:11,948 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:12,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-15 00:02:12,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-10-15 00:02:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:12,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289350708] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:12,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:12,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-10-15 00:02:12,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213674228] [2024-10-15 00:02:12,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:12,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-10-15 00:02:12,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:12,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-10-15 00:02:12,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-10-15 00:02:12,171 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-15 00:02:12,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 58 transitions, 345 flow. Second operand has 19 states, 19 states have (on average 11.578947368421053) internal successors, (220), 19 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:12,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:12,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-15 00:02:12,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:12,670 INFO L124 PetriNetUnfolderBase]: 711/1284 cut-off events. [2024-10-15 00:02:12,670 INFO L125 PetriNetUnfolderBase]: For 5150/5150 co-relation queries the response was YES. [2024-10-15 00:02:12,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5171 conditions, 1284 events. 711/1284 cut-off events. For 5150/5150 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 6427 event pairs, 121 based on Foata normal form. 21/1294 useless extension candidates. Maximal degree in co-relation 5152. Up to 336 conditions per place. [2024-10-15 00:02:12,685 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 120 selfloop transitions, 20 changer transitions 0/149 dead transitions. [2024-10-15 00:02:12,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 149 transitions, 1376 flow [2024-10-15 00:02:12,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 00:02:12,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-15 00:02:12,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 228 transitions. [2024-10-15 00:02:12,687 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35403726708074534 [2024-10-15 00:02:12,687 INFO L175 Difference]: Start difference. First operand has 87 places, 58 transitions, 345 flow. Second operand 14 states and 228 transitions. [2024-10-15 00:02:12,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 149 transitions, 1376 flow [2024-10-15 00:02:12,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 149 transitions, 1288 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-10-15 00:02:12,697 INFO L231 Difference]: Finished difference. Result has 91 places, 62 transitions, 404 flow [2024-10-15 00:02:12,698 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=404, PETRI_PLACES=91, PETRI_TRANSITIONS=62} [2024-10-15 00:02:12,698 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 45 predicate places. [2024-10-15 00:02:12,698 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 62 transitions, 404 flow [2024-10-15 00:02:12,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.578947368421053) internal successors, (220), 19 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:12,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:12,699 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:12,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-10-15 00:02:12,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:12,900 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:12,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:12,900 INFO L85 PathProgramCache]: Analyzing trace with hash 478755405, now seen corresponding path program 1 times [2024-10-15 00:02:12,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:12,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932478169] [2024-10-15 00:02:12,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:12,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:12,968 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:02:12,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:12,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932478169] [2024-10-15 00:02:12,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932478169] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:12,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23322922] [2024-10-15 00:02:12,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:12,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:12,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:12,971 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:12,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-15 00:02:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:13,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:02:13,075 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:13,097 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:02:13,098 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:02:13,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23322922] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:13,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:02:13,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-15 00:02:13,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759824446] [2024-10-15 00:02:13,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:13,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:02:13,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:13,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:02:13,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 00:02:13,111 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-10-15 00:02:13,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 62 transitions, 404 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:13,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:13,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-10-15 00:02:13,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:13,338 INFO L124 PetriNetUnfolderBase]: 661/1290 cut-off events. [2024-10-15 00:02:13,338 INFO L125 PetriNetUnfolderBase]: For 5396/5396 co-relation queries the response was YES. [2024-10-15 00:02:13,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5269 conditions, 1290 events. 661/1290 cut-off events. For 5396/5396 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6786 event pairs, 65 based on Foata normal form. 48/1335 useless extension candidates. Maximal degree in co-relation 5248. Up to 402 conditions per place. [2024-10-15 00:02:13,347 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 108 selfloop transitions, 9 changer transitions 0/126 dead transitions. [2024-10-15 00:02:13,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 126 transitions, 1160 flow [2024-10-15 00:02:13,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:02:13,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:02:13,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-10-15 00:02:13,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-10-15 00:02:13,348 INFO L175 Difference]: Start difference. First operand has 91 places, 62 transitions, 404 flow. Second operand 6 states and 136 transitions. [2024-10-15 00:02:13,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 126 transitions, 1160 flow [2024-10-15 00:02:13,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 126 transitions, 1060 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-10-15 00:02:13,354 INFO L231 Difference]: Finished difference. Result has 86 places, 61 transitions, 382 flow [2024-10-15 00:02:13,354 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=382, PETRI_PLACES=86, PETRI_TRANSITIONS=61} [2024-10-15 00:02:13,354 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 40 predicate places. [2024-10-15 00:02:13,355 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 61 transitions, 382 flow [2024-10-15 00:02:13,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:13,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:13,355 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:13,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:13,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-15 00:02:13,556 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:13,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:13,556 INFO L85 PathProgramCache]: Analyzing trace with hash -210533067, now seen corresponding path program 1 times [2024-10-15 00:02:13,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:13,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648280763] [2024-10-15 00:02:13,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:13,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:13,767 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:13,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:13,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648280763] [2024-10-15 00:02:13,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648280763] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:13,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514359871] [2024-10-15 00:02:13,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:13,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:13,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:13,770 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:13,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-15 00:02:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:13,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-15 00:02:13,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:13,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-15 00:02:13,981 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:13,981 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:14,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-15 00:02:14,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-10-15 00:02:14,091 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:14,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514359871] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:14,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:14,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-10-15 00:02:14,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468510178] [2024-10-15 00:02:14,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:14,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-15 00:02:14,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:14,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-15 00:02:14,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2024-10-15 00:02:14,205 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-15 00:02:14,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 61 transitions, 382 flow. Second operand has 23 states, 23 states have (on average 11.695652173913043) internal successors, (269), 23 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:14,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:14,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-15 00:02:14,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:14,739 INFO L124 PetriNetUnfolderBase]: 676/1226 cut-off events. [2024-10-15 00:02:14,739 INFO L125 PetriNetUnfolderBase]: For 5717/5717 co-relation queries the response was YES. [2024-10-15 00:02:14,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5249 conditions, 1226 events. 676/1226 cut-off events. For 5717/5717 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 6034 event pairs, 121 based on Foata normal form. 21/1236 useless extension candidates. Maximal degree in co-relation 5230. Up to 332 conditions per place. [2024-10-15 00:02:14,747 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 119 selfloop transitions, 20 changer transitions 0/147 dead transitions. [2024-10-15 00:02:14,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 147 transitions, 1404 flow [2024-10-15 00:02:14,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 00:02:14,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-15 00:02:14,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 227 transitions. [2024-10-15 00:02:14,752 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35248447204968947 [2024-10-15 00:02:14,752 INFO L175 Difference]: Start difference. First operand has 86 places, 61 transitions, 382 flow. Second operand 14 states and 227 transitions. [2024-10-15 00:02:14,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 147 transitions, 1404 flow [2024-10-15 00:02:14,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 147 transitions, 1266 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-10-15 00:02:14,759 INFO L231 Difference]: Finished difference. Result has 93 places, 60 transitions, 392 flow [2024-10-15 00:02:14,759 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=392, PETRI_PLACES=93, PETRI_TRANSITIONS=60} [2024-10-15 00:02:14,759 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 47 predicate places. [2024-10-15 00:02:14,760 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 60 transitions, 392 flow [2024-10-15 00:02:14,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.695652173913043) internal successors, (269), 23 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:14,760 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:14,760 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:14,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-10-15 00:02:14,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:14,961 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:14,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:14,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1956516286, now seen corresponding path program 1 times [2024-10-15 00:02:14,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:14,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428377628] [2024-10-15 00:02:14,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:14,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:15,031 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:02:15,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:15,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428377628] [2024-10-15 00:02:15,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428377628] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:15,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95254723] [2024-10-15 00:02:15,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:15,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:15,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:15,038 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:15,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-15 00:02:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:15,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:02:15,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:15,163 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:02:15,163 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:15,200 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:02:15,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95254723] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:15,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:15,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-15 00:02:15,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340612995] [2024-10-15 00:02:15,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:15,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:02:15,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:15,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:02:15,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:02:15,226 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-10-15 00:02:15,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 60 transitions, 392 flow. Second operand has 12 states, 12 states have (on average 13.916666666666666) internal successors, (167), 12 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:15,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:15,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-10-15 00:02:15,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:15,607 INFO L124 PetriNetUnfolderBase]: 979/1920 cut-off events. [2024-10-15 00:02:15,608 INFO L125 PetriNetUnfolderBase]: For 8449/8449 co-relation queries the response was YES. [2024-10-15 00:02:15,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7738 conditions, 1920 events. 979/1920 cut-off events. For 8449/8449 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 10379 event pairs, 216 based on Foata normal form. 66/1976 useless extension candidates. Maximal degree in co-relation 7719. Up to 613 conditions per place. [2024-10-15 00:02:15,624 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 172 selfloop transitions, 13 changer transitions 0/194 dead transitions. [2024-10-15 00:02:15,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 194 transitions, 1870 flow [2024-10-15 00:02:15,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:02:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:02:15,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 238 transitions. [2024-10-15 00:02:15,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5173913043478261 [2024-10-15 00:02:15,627 INFO L175 Difference]: Start difference. First operand has 93 places, 60 transitions, 392 flow. Second operand 10 states and 238 transitions. [2024-10-15 00:02:15,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 194 transitions, 1870 flow [2024-10-15 00:02:15,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 194 transitions, 1760 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-10-15 00:02:15,634 INFO L231 Difference]: Finished difference. Result has 94 places, 67 transitions, 454 flow [2024-10-15 00:02:15,634 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=454, PETRI_PLACES=94, PETRI_TRANSITIONS=67} [2024-10-15 00:02:15,635 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2024-10-15 00:02:15,636 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 67 transitions, 454 flow [2024-10-15 00:02:15,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.916666666666666) internal successors, (167), 12 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:15,636 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:15,636 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:15,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:15,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:15,837 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:15,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:15,837 INFO L85 PathProgramCache]: Analyzing trace with hash -458791430, now seen corresponding path program 1 times [2024-10-15 00:02:15,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:15,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110161670] [2024-10-15 00:02:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:15,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:02:15,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:15,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110161670] [2024-10-15 00:02:15,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110161670] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:15,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573691632] [2024-10-15 00:02:15,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:15,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:15,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:15,915 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:15,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-15 00:02:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:15,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:02:15,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:02:16,014 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-15 00:02:16,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573691632] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-15 00:02:16,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-15 00:02:16,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-10-15 00:02:16,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323017156] [2024-10-15 00:02:16,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-15 00:02:16,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-15 00:02:16,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:16,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-15 00:02:16,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-15 00:02:16,024 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-10-15 00:02:16,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 67 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:16,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:16,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-10-15 00:02:16,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:16,345 INFO L124 PetriNetUnfolderBase]: 1078/1944 cut-off events. [2024-10-15 00:02:16,345 INFO L125 PetriNetUnfolderBase]: For 9297/9326 co-relation queries the response was YES. [2024-10-15 00:02:16,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8282 conditions, 1944 events. 1078/1944 cut-off events. For 9297/9326 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 10518 event pairs, 115 based on Foata normal form. 74/1997 useless extension candidates. Maximal degree in co-relation 8261. Up to 637 conditions per place. [2024-10-15 00:02:16,360 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 119 selfloop transitions, 9 changer transitions 0/139 dead transitions. [2024-10-15 00:02:16,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 139 transitions, 1364 flow [2024-10-15 00:02:16,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-15 00:02:16,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-15 00:02:16,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-10-15 00:02:16,362 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-10-15 00:02:16,362 INFO L175 Difference]: Start difference. First operand has 94 places, 67 transitions, 454 flow. Second operand 6 states and 132 transitions. [2024-10-15 00:02:16,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 139 transitions, 1364 flow [2024-10-15 00:02:16,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 139 transitions, 1332 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-15 00:02:16,373 INFO L231 Difference]: Finished difference. Result has 95 places, 66 transitions, 460 flow [2024-10-15 00:02:16,375 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=460, PETRI_PLACES=95, PETRI_TRANSITIONS=66} [2024-10-15 00:02:16,375 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 49 predicate places. [2024-10-15 00:02:16,376 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 66 transitions, 460 flow [2024-10-15 00:02:16,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:16,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:16,376 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-15 00:02:16,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:16,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-15 00:02:16,577 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:16,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:16,578 INFO L85 PathProgramCache]: Analyzing trace with hash -983505405, now seen corresponding path program 2 times [2024-10-15 00:02:16,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:16,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033204956] [2024-10-15 00:02:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:16,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:16,810 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:16,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:16,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033204956] [2024-10-15 00:02:16,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033204956] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:16,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302273849] [2024-10-15 00:02:16,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:02:16,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:16,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:16,816 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:16,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-10-15 00:02:16,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 00:02:16,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:16,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-15 00:02:16,931 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:17,141 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:17,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302273849] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:17,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:17,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-10-15 00:02:17,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445286346] [2024-10-15 00:02:17,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:17,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-15 00:02:17,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:17,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-15 00:02:17,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2024-10-15 00:02:17,486 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-10-15 00:02:17,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 66 transitions, 460 flow. Second operand has 30 states, 30 states have (on average 10.5) internal successors, (315), 30 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:17,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:17,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-10-15 00:02:17,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:18,279 INFO L124 PetriNetUnfolderBase]: 1601/2919 cut-off events. [2024-10-15 00:02:18,280 INFO L125 PetriNetUnfolderBase]: For 13867/13867 co-relation queries the response was YES. [2024-10-15 00:02:18,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12956 conditions, 2919 events. 1601/2919 cut-off events. For 13867/13867 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 16246 event pairs, 923 based on Foata normal form. 22/2929 useless extension candidates. Maximal degree in co-relation 12934. Up to 1829 conditions per place. [2024-10-15 00:02:18,309 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 127 selfloop transitions, 21 changer transitions 18/173 dead transitions. [2024-10-15 00:02:18,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 173 transitions, 1685 flow [2024-10-15 00:02:18,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 00:02:18,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-15 00:02:18,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 226 transitions. [2024-10-15 00:02:18,311 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35093167701863354 [2024-10-15 00:02:18,311 INFO L175 Difference]: Start difference. First operand has 95 places, 66 transitions, 460 flow. Second operand 14 states and 226 transitions. [2024-10-15 00:02:18,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 173 transitions, 1685 flow [2024-10-15 00:02:18,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 173 transitions, 1547 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-10-15 00:02:18,328 INFO L231 Difference]: Finished difference. Result has 108 places, 74 transitions, 586 flow [2024-10-15 00:02:18,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=586, PETRI_PLACES=108, PETRI_TRANSITIONS=74} [2024-10-15 00:02:18,330 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2024-10-15 00:02:18,330 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 74 transitions, 586 flow [2024-10-15 00:02:18,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 10.5) internal successors, (315), 30 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:18,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:18,331 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:18,353 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-10-15 00:02:18,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:18,532 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:18,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:18,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1337631808, now seen corresponding path program 1 times [2024-10-15 00:02:18,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:18,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504358903] [2024-10-15 00:02:18,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:18,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:02:18,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:18,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504358903] [2024-10-15 00:02:18,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504358903] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:18,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553149410] [2024-10-15 00:02:18,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:18,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:18,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:18,607 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:18,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-10-15 00:02:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:18,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-15 00:02:18,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:18,768 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:02:18,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:18,805 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-15 00:02:18,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553149410] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:18,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:18,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-10-15 00:02:18,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229299009] [2024-10-15 00:02:18,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:18,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-15 00:02:18,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:18,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-15 00:02:18,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-10-15 00:02:18,827 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-10-15 00:02:18,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 74 transitions, 586 flow. Second operand has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:18,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:18,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-10-15 00:02:18,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:19,713 INFO L124 PetriNetUnfolderBase]: 2381/4361 cut-off events. [2024-10-15 00:02:19,713 INFO L125 PetriNetUnfolderBase]: For 23736/23916 co-relation queries the response was YES. [2024-10-15 00:02:19,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18915 conditions, 4361 events. 2381/4361 cut-off events. For 23736/23916 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 26613 event pairs, 578 based on Foata normal form. 250/4599 useless extension candidates. Maximal degree in co-relation 18887. Up to 1484 conditions per place. [2024-10-15 00:02:19,769 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 254 selfloop transitions, 13 changer transitions 0/280 dead transitions. [2024-10-15 00:02:19,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 280 transitions, 3254 flow [2024-10-15 00:02:19,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-15 00:02:19,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-15 00:02:19,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2024-10-15 00:02:19,772 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-15 00:02:19,772 INFO L175 Difference]: Start difference. First operand has 108 places, 74 transitions, 586 flow. Second operand 10 states and 230 transitions. [2024-10-15 00:02:19,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 280 transitions, 3254 flow [2024-10-15 00:02:19,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 280 transitions, 3193 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-10-15 00:02:19,797 INFO L231 Difference]: Finished difference. Result has 113 places, 81 transitions, 647 flow [2024-10-15 00:02:19,798 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=647, PETRI_PLACES=113, PETRI_TRANSITIONS=81} [2024-10-15 00:02:19,798 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 67 predicate places. [2024-10-15 00:02:19,798 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 81 transitions, 647 flow [2024-10-15 00:02:19,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.083333333333334) internal successors, (169), 12 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:19,799 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:19,799 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:19,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:19,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:20,000 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:20,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:20,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1268926108, now seen corresponding path program 3 times [2024-10-15 00:02:20,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:20,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040874231] [2024-10-15 00:02:20,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:20,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:20,199 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:20,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:20,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040874231] [2024-10-15 00:02:20,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040874231] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:20,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1268313502] [2024-10-15 00:02:20,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 00:02:20,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:20,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:20,205 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:20,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-10-15 00:02:20,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-15 00:02:20,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:20,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-15 00:02:20,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:20,594 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:20,594 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:20,768 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:20,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1268313502] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:20,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:20,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-10-15 00:02:20,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109758699] [2024-10-15 00:02:20,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:20,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-10-15 00:02:20,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:20,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-10-15 00:02:20,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2024-10-15 00:02:20,970 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-10-15 00:02:20,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 81 transitions, 647 flow. Second operand has 30 states, 30 states have (on average 10.566666666666666) internal successors, (317), 30 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:20,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:20,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-10-15 00:02:20,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:22,002 INFO L124 PetriNetUnfolderBase]: 2343/3940 cut-off events. [2024-10-15 00:02:22,002 INFO L125 PetriNetUnfolderBase]: For 21194/21349 co-relation queries the response was YES. [2024-10-15 00:02:22,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18267 conditions, 3940 events. 2343/3940 cut-off events. For 21194/21349 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 22046 event pairs, 1553 based on Foata normal form. 57/3976 useless extension candidates. Maximal degree in co-relation 18237. Up to 3167 conditions per place. [2024-10-15 00:02:22,044 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 50 selfloop transitions, 12 changer transitions 81/153 dead transitions. [2024-10-15 00:02:22,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 153 transitions, 1562 flow [2024-10-15 00:02:22,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-15 00:02:22,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-15 00:02:22,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 209 transitions. [2024-10-15 00:02:22,046 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3245341614906832 [2024-10-15 00:02:22,046 INFO L175 Difference]: Start difference. First operand has 113 places, 81 transitions, 647 flow. Second operand 14 states and 209 transitions. [2024-10-15 00:02:22,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 153 transitions, 1562 flow [2024-10-15 00:02:22,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 153 transitions, 1546 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-15 00:02:22,076 INFO L231 Difference]: Finished difference. Result has 129 places, 72 transitions, 566 flow [2024-10-15 00:02:22,077 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=566, PETRI_PLACES=129, PETRI_TRANSITIONS=72} [2024-10-15 00:02:22,077 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 83 predicate places. [2024-10-15 00:02:22,077 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 72 transitions, 566 flow [2024-10-15 00:02:22,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 10.566666666666666) internal successors, (317), 30 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:22,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:22,078 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-15 00:02:22,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:22,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:22,279 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:22,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:22,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1910356086, now seen corresponding path program 3 times [2024-10-15 00:02:22,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:22,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052967388] [2024-10-15 00:02:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:22,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:22,706 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:22,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:22,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052967388] [2024-10-15 00:02:22,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052967388] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:22,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771534366] [2024-10-15 00:02:22,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 00:02:22,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:22,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:22,709 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:22,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-15 00:02:22,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-15 00:02:22,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:22,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-15 00:02:22,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:22,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:02:23,032 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:23,033 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:23,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-15 00:02:23,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-10-15 00:02:23,341 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:23,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771534366] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:23,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:23,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-10-15 00:02:23,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798479946] [2024-10-15 00:02:23,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:23,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-15 00:02:23,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:23,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-15 00:02:23,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2024-10-15 00:02:23,524 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-15 00:02:23,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 72 transitions, 566 flow. Second operand has 29 states, 29 states have (on average 11.344827586206897) internal successors, (329), 29 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:23,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:23,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-15 00:02:23,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:24,867 INFO L124 PetriNetUnfolderBase]: 1660/3100 cut-off events. [2024-10-15 00:02:24,867 INFO L125 PetriNetUnfolderBase]: For 17877/17924 co-relation queries the response was YES. [2024-10-15 00:02:24,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14159 conditions, 3100 events. 1660/3100 cut-off events. For 17877/17924 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 17456 event pairs, 249 based on Foata normal form. 38/3127 useless extension candidates. Maximal degree in co-relation 14121. Up to 828 conditions per place. [2024-10-15 00:02:24,893 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 208 selfloop transitions, 26 changer transitions 0/245 dead transitions. [2024-10-15 00:02:24,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 245 transitions, 2633 flow [2024-10-15 00:02:24,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-15 00:02:24,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-15 00:02:24,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 314 transitions. [2024-10-15 00:02:24,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35926773455377575 [2024-10-15 00:02:24,897 INFO L175 Difference]: Start difference. First operand has 129 places, 72 transitions, 566 flow. Second operand 19 states and 314 transitions. [2024-10-15 00:02:24,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 245 transitions, 2633 flow [2024-10-15 00:02:24,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 245 transitions, 2463 flow, removed 73 selfloop flow, removed 19 redundant places. [2024-10-15 00:02:24,924 INFO L231 Difference]: Finished difference. Result has 118 places, 74 transitions, 592 flow [2024-10-15 00:02:24,924 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=592, PETRI_PLACES=118, PETRI_TRANSITIONS=74} [2024-10-15 00:02:24,925 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 72 predicate places. [2024-10-15 00:02:24,925 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 74 transitions, 592 flow [2024-10-15 00:02:24,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 11.344827586206897) internal successors, (329), 29 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:24,925 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:24,925 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-15 00:02:24,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-15 00:02:25,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-15 00:02:25,130 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:25,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:25,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1910356085, now seen corresponding path program 3 times [2024-10-15 00:02:25,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:25,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362429830] [2024-10-15 00:02:25,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:25,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:25,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:25,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362429830] [2024-10-15 00:02:25,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362429830] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:25,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444452155] [2024-10-15 00:02:25,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 00:02:25,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:25,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:25,555 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:25,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-10-15 00:02:25,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-15 00:02:25,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:25,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-15 00:02:25,667 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:25,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-15 00:02:25,929 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:25,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:26,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-15 00:02:26,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-10-15 00:02:26,147 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:26,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444452155] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:26,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:26,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2024-10-15 00:02:26,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958440229] [2024-10-15 00:02:26,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:26,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-15 00:02:26,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:26,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-15 00:02:26,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2024-10-15 00:02:26,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-15 00:02:26,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 74 transitions, 592 flow. Second operand has 33 states, 33 states have (on average 11.393939393939394) internal successors, (376), 33 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:26,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:26,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-15 00:02:26,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:27,563 INFO L124 PetriNetUnfolderBase]: 1596/2998 cut-off events. [2024-10-15 00:02:27,563 INFO L125 PetriNetUnfolderBase]: For 19110/19124 co-relation queries the response was YES. [2024-10-15 00:02:27,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13893 conditions, 2998 events. 1596/2998 cut-off events. For 19110/19124 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 16797 event pairs, 280 based on Foata normal form. 38/3025 useless extension candidates. Maximal degree in co-relation 13865. Up to 828 conditions per place. [2024-10-15 00:02:27,595 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 207 selfloop transitions, 26 changer transitions 0/244 dead transitions. [2024-10-15 00:02:27,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 244 transitions, 2525 flow [2024-10-15 00:02:27,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-15 00:02:27,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-15 00:02:27,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 313 transitions. [2024-10-15 00:02:27,597 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.35812356979405036 [2024-10-15 00:02:27,597 INFO L175 Difference]: Start difference. First operand has 118 places, 74 transitions, 592 flow. Second operand 19 states and 313 transitions. [2024-10-15 00:02:27,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 244 transitions, 2525 flow [2024-10-15 00:02:27,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 244 transitions, 2441 flow, removed 2 selfloop flow, removed 18 redundant places. [2024-10-15 00:02:27,623 INFO L231 Difference]: Finished difference. Result has 118 places, 73 transitions, 551 flow [2024-10-15 00:02:27,624 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=551, PETRI_PLACES=118, PETRI_TRANSITIONS=73} [2024-10-15 00:02:27,624 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 72 predicate places. [2024-10-15 00:02:27,624 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 73 transitions, 551 flow [2024-10-15 00:02:27,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 11.393939393939394) internal successors, (376), 33 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:27,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:27,625 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:27,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:27,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-10-15 00:02:27,826 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:27,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:27,827 INFO L85 PathProgramCache]: Analyzing trace with hash 888126231, now seen corresponding path program 4 times [2024-10-15 00:02:27,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:27,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178097044] [2024-10-15 00:02:27,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:27,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:28,187 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:28,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:28,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178097044] [2024-10-15 00:02:28,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178097044] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:28,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214474500] [2024-10-15 00:02:28,188 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 00:02:28,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:28,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:28,190 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:28,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-10-15 00:02:28,300 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 00:02:28,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:28,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-10-15 00:02:28,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:28,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-15 00:02:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:28,577 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:28,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-15 00:02:28,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-10-15 00:02:28,767 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:28,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214474500] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:28,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:28,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2024-10-15 00:02:28,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496905365] [2024-10-15 00:02:28,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:28,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-15 00:02:28,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:28,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-15 00:02:28,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=954, Unknown=0, NotChecked=0, Total=1056 [2024-10-15 00:02:29,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-15 00:02:29,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 73 transitions, 551 flow. Second operand has 33 states, 33 states have (on average 11.575757575757576) internal successors, (382), 33 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:29,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:29,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-15 00:02:29,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:30,302 INFO L124 PetriNetUnfolderBase]: 1497/2685 cut-off events. [2024-10-15 00:02:30,303 INFO L125 PetriNetUnfolderBase]: For 15211/15254 co-relation queries the response was YES. [2024-10-15 00:02:30,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12378 conditions, 2685 events. 1497/2685 cut-off events. For 15211/15254 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 14547 event pairs, 283 based on Foata normal form. 33/2699 useless extension candidates. Maximal degree in co-relation 12351. Up to 765 conditions per place. [2024-10-15 00:02:30,333 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 209 selfloop transitions, 26 changer transitions 0/246 dead transitions. [2024-10-15 00:02:30,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 246 transitions, 2648 flow [2024-10-15 00:02:30,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-15 00:02:30,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-15 00:02:30,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 305 transitions. [2024-10-15 00:02:30,340 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3489702517162471 [2024-10-15 00:02:30,340 INFO L175 Difference]: Start difference. First operand has 118 places, 73 transitions, 551 flow. Second operand 19 states and 305 transitions. [2024-10-15 00:02:30,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 246 transitions, 2648 flow [2024-10-15 00:02:30,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 246 transitions, 2411 flow, removed 12 selfloop flow, removed 17 redundant places. [2024-10-15 00:02:30,359 INFO L231 Difference]: Finished difference. Result has 121 places, 75 transitions, 592 flow [2024-10-15 00:02:30,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=592, PETRI_PLACES=121, PETRI_TRANSITIONS=75} [2024-10-15 00:02:30,359 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 75 predicate places. [2024-10-15 00:02:30,360 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 75 transitions, 592 flow [2024-10-15 00:02:30,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 11.575757575757576) internal successors, (382), 33 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:30,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:30,360 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:30,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-10-15 00:02:30,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:30,566 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:30,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:30,566 INFO L85 PathProgramCache]: Analyzing trace with hash 888126232, now seen corresponding path program 2 times [2024-10-15 00:02:30,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:30,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366047018] [2024-10-15 00:02:30,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:30,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:30,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:30,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366047018] [2024-10-15 00:02:30,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366047018] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:30,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696026852] [2024-10-15 00:02:30,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-15 00:02:30,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:30,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:30,942 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:30,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-10-15 00:02:31,055 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-15 00:02:31,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:31,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-15 00:02:31,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:31,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:02:31,233 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:31,233 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:31,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-15 00:02:31,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-10-15 00:02:31,484 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:31,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696026852] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:31,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:31,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-10-15 00:02:31,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717607357] [2024-10-15 00:02:31,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:31,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-10-15 00:02:31,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:31,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-10-15 00:02:31,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=729, Unknown=0, NotChecked=0, Total=812 [2024-10-15 00:02:31,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-15 00:02:31,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 75 transitions, 592 flow. Second operand has 29 states, 29 states have (on average 11.482758620689655) internal successors, (333), 29 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:31,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:31,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-15 00:02:31,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:32,639 INFO L124 PetriNetUnfolderBase]: 1440/2595 cut-off events. [2024-10-15 00:02:32,639 INFO L125 PetriNetUnfolderBase]: For 15479/15520 co-relation queries the response was YES. [2024-10-15 00:02:32,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12287 conditions, 2595 events. 1440/2595 cut-off events. For 15479/15520 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 13938 event pairs, 283 based on Foata normal form. 33/2609 useless extension candidates. Maximal degree in co-relation 12259. Up to 765 conditions per place. [2024-10-15 00:02:32,655 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 208 selfloop transitions, 26 changer transitions 0/245 dead transitions. [2024-10-15 00:02:32,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 245 transitions, 2474 flow [2024-10-15 00:02:32,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-15 00:02:32,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-15 00:02:32,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 304 transitions. [2024-10-15 00:02:32,656 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34782608695652173 [2024-10-15 00:02:32,656 INFO L175 Difference]: Start difference. First operand has 121 places, 75 transitions, 592 flow. Second operand 19 states and 304 transitions. [2024-10-15 00:02:32,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 245 transitions, 2474 flow [2024-10-15 00:02:32,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 245 transitions, 2392 flow, removed 1 selfloop flow, removed 18 redundant places. [2024-10-15 00:02:32,668 INFO L231 Difference]: Finished difference. Result has 121 places, 74 transitions, 554 flow [2024-10-15 00:02:32,669 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=554, PETRI_PLACES=121, PETRI_TRANSITIONS=74} [2024-10-15 00:02:32,669 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 75 predicate places. [2024-10-15 00:02:32,669 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 74 transitions, 554 flow [2024-10-15 00:02:32,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 11.482758620689655) internal successors, (333), 29 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:32,669 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:32,670 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2024-10-15 00:02:32,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-10-15 00:02:32,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:32,870 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:32,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:32,871 INFO L85 PathProgramCache]: Analyzing trace with hash 493615733, now seen corresponding path program 4 times [2024-10-15 00:02:32,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:32,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854096270] [2024-10-15 00:02:32,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:32,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:33,064 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 10 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:33,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:33,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854096270] [2024-10-15 00:02:33,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854096270] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:33,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834786338] [2024-10-15 00:02:33,065 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 00:02:33,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:33,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:33,069 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:33,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-10-15 00:02:33,163 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 00:02:33,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:33,165 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-15 00:02:33,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:33,375 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:33,561 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:33,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834786338] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:33,561 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:33,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 39 [2024-10-15 00:02:33,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779416372] [2024-10-15 00:02:33,561 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:33,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-15 00:02:33,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:33,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-15 00:02:33,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1286, Unknown=0, NotChecked=0, Total=1560 [2024-10-15 00:02:33,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-10-15 00:02:33,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 74 transitions, 554 flow. Second operand has 40 states, 40 states have (on average 10.475) internal successors, (419), 40 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:33,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:33,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-10-15 00:02:33,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:34,617 INFO L124 PetriNetUnfolderBase]: 2706/4866 cut-off events. [2024-10-15 00:02:34,617 INFO L125 PetriNetUnfolderBase]: For 23249/23303 co-relation queries the response was YES. [2024-10-15 00:02:34,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22025 conditions, 4866 events. 2706/4866 cut-off events. For 23249/23303 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 28883 event pairs, 1361 based on Foata normal form. 34/4880 useless extension candidates. Maximal degree in co-relation 21998. Up to 2691 conditions per place. [2024-10-15 00:02:34,656 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 182 selfloop transitions, 24 changer transitions 40/256 dead transitions. [2024-10-15 00:02:34,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 256 transitions, 2697 flow [2024-10-15 00:02:34,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-15 00:02:34,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-15 00:02:34,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 287 transitions. [2024-10-15 00:02:34,657 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3466183574879227 [2024-10-15 00:02:34,657 INFO L175 Difference]: Start difference. First operand has 121 places, 74 transitions, 554 flow. Second operand 18 states and 287 transitions. [2024-10-15 00:02:34,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 256 transitions, 2697 flow [2024-10-15 00:02:34,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 256 transitions, 2481 flow, removed 9 selfloop flow, removed 17 redundant places. [2024-10-15 00:02:34,683 INFO L231 Difference]: Finished difference. Result has 129 places, 85 transitions, 702 flow [2024-10-15 00:02:34,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=702, PETRI_PLACES=129, PETRI_TRANSITIONS=85} [2024-10-15 00:02:34,684 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 83 predicate places. [2024-10-15 00:02:34,684 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 85 transitions, 702 flow [2024-10-15 00:02:34,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 10.475) internal successors, (419), 40 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:34,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:34,685 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:34,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-10-15 00:02:34,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:34,885 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:34,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:34,886 INFO L85 PathProgramCache]: Analyzing trace with hash -191448734, now seen corresponding path program 3 times [2024-10-15 00:02:34,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:34,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048996464] [2024-10-15 00:02:34,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:34,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:35,103 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 10 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:35,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:35,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048996464] [2024-10-15 00:02:35,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048996464] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:35,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477009304] [2024-10-15 00:02:35,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-15 00:02:35,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:35,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:35,105 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:35,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-10-15 00:02:35,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-15 00:02:35,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:35,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-15 00:02:35,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:35,485 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:35,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:35,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477009304] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:35,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:35,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 39 [2024-10-15 00:02:35,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936013177] [2024-10-15 00:02:35,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:35,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-10-15 00:02:35,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:35,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-10-15 00:02:35,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1291, Unknown=0, NotChecked=0, Total=1560 [2024-10-15 00:02:35,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-10-15 00:02:35,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 85 transitions, 702 flow. Second operand has 40 states, 40 states have (on average 10.525) internal successors, (421), 40 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:35,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:35,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-10-15 00:02:35,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:36,875 INFO L124 PetriNetUnfolderBase]: 2279/3833 cut-off events. [2024-10-15 00:02:36,876 INFO L125 PetriNetUnfolderBase]: For 19522/19708 co-relation queries the response was YES. [2024-10-15 00:02:36,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18120 conditions, 3833 events. 2279/3833 cut-off events. For 19522/19708 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 21064 event pairs, 1301 based on Foata normal form. 100/3909 useless extension candidates. Maximal degree in co-relation 18086. Up to 2671 conditions per place. [2024-10-15 00:02:36,908 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 51 selfloop transitions, 12 changer transitions 131/204 dead transitions. [2024-10-15 00:02:36,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 204 transitions, 2172 flow [2024-10-15 00:02:36,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-15 00:02:36,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-15 00:02:36,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 264 transitions. [2024-10-15 00:02:36,911 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3188405797101449 [2024-10-15 00:02:36,911 INFO L175 Difference]: Start difference. First operand has 129 places, 85 transitions, 702 flow. Second operand 18 states and 264 transitions. [2024-10-15 00:02:36,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 204 transitions, 2172 flow [2024-10-15 00:02:36,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 204 transitions, 2115 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-10-15 00:02:36,934 INFO L231 Difference]: Finished difference. Result has 145 places, 73 transitions, 570 flow [2024-10-15 00:02:36,934 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=570, PETRI_PLACES=145, PETRI_TRANSITIONS=73} [2024-10-15 00:02:36,934 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 99 predicate places. [2024-10-15 00:02:36,934 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 73 transitions, 570 flow [2024-10-15 00:02:36,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 10.525) internal successors, (421), 40 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:36,935 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:36,935 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2024-10-15 00:02:36,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-10-15 00:02:37,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-10-15 00:02:37,136 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:37,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:37,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1270131176, now seen corresponding path program 5 times [2024-10-15 00:02:37,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:37,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719369006] [2024-10-15 00:02:37,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:37,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:37,659 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:37,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:37,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719369006] [2024-10-15 00:02:37,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719369006] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:37,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35336096] [2024-10-15 00:02:37,662 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 00:02:37,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:37,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:37,664 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:37,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-10-15 00:02:37,785 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-10-15 00:02:37,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:37,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-15 00:02:37,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:37,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:02:37,984 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:37,985 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:38,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-15 00:02:38,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-10-15 00:02:38,329 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:38,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35336096] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:38,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:38,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2024-10-15 00:02:38,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120332871] [2024-10-15 00:02:38,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:38,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-15 00:02:38,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:38,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-15 00:02:38,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2024-10-15 00:02:38,658 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-15 00:02:38,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 73 transitions, 570 flow. Second operand has 39 states, 39 states have (on average 11.333333333333334) internal successors, (442), 39 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:38,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:38,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-15 00:02:38,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:40,449 INFO L124 PetriNetUnfolderBase]: 1387/2613 cut-off events. [2024-10-15 00:02:40,450 INFO L125 PetriNetUnfolderBase]: For 14069/14124 co-relation queries the response was YES. [2024-10-15 00:02:40,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12293 conditions, 2613 events. 1387/2613 cut-off events. For 14069/14124 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 14177 event pairs, 131 based on Foata normal form. 34/2639 useless extension candidates. Maximal degree in co-relation 12251. Up to 563 conditions per place. [2024-10-15 00:02:40,476 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 274 selfloop transitions, 30 changer transitions 0/315 dead transitions. [2024-10-15 00:02:40,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 315 transitions, 3391 flow [2024-10-15 00:02:40,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-15 00:02:40,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-15 00:02:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 397 transitions. [2024-10-15 00:02:40,478 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3596014492753623 [2024-10-15 00:02:40,478 INFO L175 Difference]: Start difference. First operand has 145 places, 73 transitions, 570 flow. Second operand 24 states and 397 transitions. [2024-10-15 00:02:40,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 315 transitions, 3391 flow [2024-10-15 00:02:40,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 315 transitions, 3125 flow, removed 121 selfloop flow, removed 25 redundant places. [2024-10-15 00:02:40,507 INFO L231 Difference]: Finished difference. Result has 129 places, 75 transitions, 593 flow [2024-10-15 00:02:40,507 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=593, PETRI_PLACES=129, PETRI_TRANSITIONS=75} [2024-10-15 00:02:40,508 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 83 predicate places. [2024-10-15 00:02:40,508 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 75 transitions, 593 flow [2024-10-15 00:02:40,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 11.333333333333334) internal successors, (442), 39 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:40,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:40,508 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2024-10-15 00:02:40,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:40,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-10-15 00:02:40,709 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:40,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:40,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1270131175, now seen corresponding path program 4 times [2024-10-15 00:02:40,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:40,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517290263] [2024-10-15 00:02:40,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:40,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:41,153 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:41,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:41,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517290263] [2024-10-15 00:02:41,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517290263] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:41,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400934420] [2024-10-15 00:02:41,154 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 00:02:41,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:41,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:41,156 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:41,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-10-15 00:02:41,288 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 00:02:41,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:41,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-15 00:02:41,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:41,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-15 00:02:41,742 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:41,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:41,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-15 00:02:41,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-10-15 00:02:41,982 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:41,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400934420] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:41,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:41,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 41 [2024-10-15 00:02:41,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427849358] [2024-10-15 00:02:41,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:41,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-10-15 00:02:41,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:41,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-10-15 00:02:41,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1673, Unknown=0, NotChecked=0, Total=1806 [2024-10-15 00:02:42,409 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-15 00:02:42,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 75 transitions, 593 flow. Second operand has 43 states, 43 states have (on average 11.372093023255815) internal successors, (489), 43 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:42,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:42,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-15 00:02:42,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:44,225 INFO L124 PetriNetUnfolderBase]: 1329/2522 cut-off events. [2024-10-15 00:02:44,225 INFO L125 PetriNetUnfolderBase]: For 13890/13910 co-relation queries the response was YES. [2024-10-15 00:02:44,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11717 conditions, 2522 events. 1329/2522 cut-off events. For 13890/13910 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 13464 event pairs, 131 based on Foata normal form. 34/2548 useless extension candidates. Maximal degree in co-relation 11689. Up to 563 conditions per place. [2024-10-15 00:02:44,246 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 273 selfloop transitions, 30 changer transitions 0/314 dead transitions. [2024-10-15 00:02:44,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 314 transitions, 3192 flow [2024-10-15 00:02:44,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-15 00:02:44,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-15 00:02:44,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 396 transitions. [2024-10-15 00:02:44,247 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.358695652173913 [2024-10-15 00:02:44,247 INFO L175 Difference]: Start difference. First operand has 129 places, 75 transitions, 593 flow. Second operand 24 states and 396 transitions. [2024-10-15 00:02:44,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 314 transitions, 3192 flow [2024-10-15 00:02:44,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 314 transitions, 3102 flow, removed 2 selfloop flow, removed 23 redundant places. [2024-10-15 00:02:44,269 INFO L231 Difference]: Finished difference. Result has 129 places, 74 transitions, 552 flow [2024-10-15 00:02:44,269 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=552, PETRI_PLACES=129, PETRI_TRANSITIONS=74} [2024-10-15 00:02:44,270 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 83 predicate places. [2024-10-15 00:02:44,270 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 74 transitions, 552 flow [2024-10-15 00:02:44,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 11.372093023255815) internal successors, (489), 43 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:44,270 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:44,270 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:44,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-10-15 00:02:44,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-10-15 00:02:44,471 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:44,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:44,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1284417515, now seen corresponding path program 4 times [2024-10-15 00:02:44,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:44,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357380857] [2024-10-15 00:02:44,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:44,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:44,953 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:44,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:44,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357380857] [2024-10-15 00:02:44,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357380857] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:44,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111455955] [2024-10-15 00:02:44,954 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-15 00:02:44,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:44,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:44,957 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:44,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-10-15 00:02:45,088 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-15 00:02:45,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:45,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-10-15 00:02:45,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:45,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-15 00:02:45,500 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:45,500 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:45,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-15 00:02:45,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-10-15 00:02:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:45,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111455955] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:45,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:45,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 41 [2024-10-15 00:02:45,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56564444] [2024-10-15 00:02:45,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:45,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-10-15 00:02:45,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:45,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-10-15 00:02:45,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1674, Unknown=0, NotChecked=0, Total=1806 [2024-10-15 00:02:46,103 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-15 00:02:46,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 74 transitions, 552 flow. Second operand has 43 states, 43 states have (on average 11.511627906976743) internal successors, (495), 43 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:46,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:46,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-15 00:02:46,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:47,753 INFO L124 PetriNetUnfolderBase]: 1236/2231 cut-off events. [2024-10-15 00:02:47,754 INFO L125 PetriNetUnfolderBase]: For 11319/11358 co-relation queries the response was YES. [2024-10-15 00:02:47,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10317 conditions, 2231 events. 1236/2231 cut-off events. For 11319/11358 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11524 event pairs, 169 based on Foata normal form. 29/2243 useless extension candidates. Maximal degree in co-relation 10290. Up to 520 conditions per place. [2024-10-15 00:02:47,776 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 275 selfloop transitions, 30 changer transitions 0/316 dead transitions. [2024-10-15 00:02:47,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 316 transitions, 3390 flow [2024-10-15 00:02:47,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-15 00:02:47,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-15 00:02:47,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 385 transitions. [2024-10-15 00:02:47,778 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.348731884057971 [2024-10-15 00:02:47,778 INFO L175 Difference]: Start difference. First operand has 129 places, 74 transitions, 552 flow. Second operand 24 states and 385 transitions. [2024-10-15 00:02:47,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 316 transitions, 3390 flow [2024-10-15 00:02:47,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 316 transitions, 3037 flow, removed 13 selfloop flow, removed 22 redundant places. [2024-10-15 00:02:47,797 INFO L231 Difference]: Finished difference. Result has 132 places, 76 transitions, 599 flow [2024-10-15 00:02:47,797 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=599, PETRI_PLACES=132, PETRI_TRANSITIONS=76} [2024-10-15 00:02:47,797 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 86 predicate places. [2024-10-15 00:02:47,797 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 76 transitions, 599 flow [2024-10-15 00:02:47,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 11.511627906976743) internal successors, (495), 43 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:47,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:47,798 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:47,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:47,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:47,999 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:47,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:47,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1284417516, now seen corresponding path program 5 times [2024-10-15 00:02:47,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:47,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043015188] [2024-10-15 00:02:48,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:48,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:48,442 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:48,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:48,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043015188] [2024-10-15 00:02:48,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043015188] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:48,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680759502] [2024-10-15 00:02:48,443 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 00:02:48,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:48,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:48,445 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:48,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-10-15 00:02:48,575 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-10-15 00:02:48,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:48,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-15 00:02:48,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:48,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:02:48,814 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:48,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:49,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-15 00:02:49,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-10-15 00:02:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:49,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680759502] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:49,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:49,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2024-10-15 00:02:49,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774277207] [2024-10-15 00:02:49,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:49,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-10-15 00:02:49,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:49,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-10-15 00:02:49,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1367, Unknown=0, NotChecked=0, Total=1482 [2024-10-15 00:02:49,470 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-15 00:02:49,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 76 transitions, 599 flow. Second operand has 39 states, 39 states have (on average 11.435897435897436) internal successors, (446), 39 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:49,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:49,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-15 00:02:49,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:51,008 INFO L124 PetriNetUnfolderBase]: 1185/2151 cut-off events. [2024-10-15 00:02:51,009 INFO L125 PetriNetUnfolderBase]: For 11377/11414 co-relation queries the response was YES. [2024-10-15 00:02:51,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10153 conditions, 2151 events. 1185/2151 cut-off events. For 11377/11414 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 11059 event pairs, 169 based on Foata normal form. 29/2163 useless extension candidates. Maximal degree in co-relation 10125. Up to 520 conditions per place. [2024-10-15 00:02:51,026 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 274 selfloop transitions, 30 changer transitions 0/315 dead transitions. [2024-10-15 00:02:51,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 315 transitions, 3103 flow [2024-10-15 00:02:51,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-15 00:02:51,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-15 00:02:51,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 384 transitions. [2024-10-15 00:02:51,028 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.34782608695652173 [2024-10-15 00:02:51,028 INFO L175 Difference]: Start difference. First operand has 132 places, 76 transitions, 599 flow. Second operand 24 states and 384 transitions. [2024-10-15 00:02:51,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 315 transitions, 3103 flow [2024-10-15 00:02:51,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 315 transitions, 3011 flow, removed 3 selfloop flow, removed 23 redundant places. [2024-10-15 00:02:51,046 INFO L231 Difference]: Finished difference. Result has 132 places, 75 transitions, 555 flow [2024-10-15 00:02:51,046 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=555, PETRI_PLACES=132, PETRI_TRANSITIONS=75} [2024-10-15 00:02:51,047 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 86 predicate places. [2024-10-15 00:02:51,047 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 75 transitions, 555 flow [2024-10-15 00:02:51,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 11.435897435897436) internal successors, (446), 39 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:51,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:51,047 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-10-15 00:02:51,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-10-15 00:02:51,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-10-15 00:02:51,248 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:51,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:51,248 INFO L85 PathProgramCache]: Analyzing trace with hash -70508477, now seen corresponding path program 6 times [2024-10-15 00:02:51,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:51,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287466177] [2024-10-15 00:02:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:51,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:51,559 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 22 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:51,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:51,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287466177] [2024-10-15 00:02:51,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287466177] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:51,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432530031] [2024-10-15 00:02:51,560 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 00:02:51,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:51,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:51,562 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:51,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-10-15 00:02:51,698 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-10-15 00:02:51,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:51,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-15 00:02:51,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:52,093 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 38 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:52,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 38 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:52,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432530031] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:52,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:52,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 49 [2024-10-15 00:02:52,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281649581] [2024-10-15 00:02:52,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:52,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-10-15 00:02:52,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:52,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-10-15 00:02:52,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=407, Invalid=2043, Unknown=0, NotChecked=0, Total=2450 [2024-10-15 00:02:52,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-10-15 00:02:52,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 75 transitions, 555 flow. Second operand has 50 states, 50 states have (on average 10.46) internal successors, (523), 50 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:52,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:52,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-10-15 00:02:52,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:53,978 INFO L124 PetriNetUnfolderBase]: 2559/4514 cut-off events. [2024-10-15 00:02:53,979 INFO L125 PetriNetUnfolderBase]: For 19522/19580 co-relation queries the response was YES. [2024-10-15 00:02:53,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20538 conditions, 4514 events. 2559/4514 cut-off events. For 19522/19580 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 26174 event pairs, 1111 based on Foata normal form. 30/4480 useless extension candidates. Maximal degree in co-relation 20511. Up to 2235 conditions per place. [2024-10-15 00:02:54,013 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 225 selfloop transitions, 27 changer transitions 50/312 dead transitions. [2024-10-15 00:02:54,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 312 transitions, 3286 flow [2024-10-15 00:02:54,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-15 00:02:54,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-15 00:02:54,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 348 transitions. [2024-10-15 00:02:54,014 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3438735177865613 [2024-10-15 00:02:54,014 INFO L175 Difference]: Start difference. First operand has 132 places, 75 transitions, 555 flow. Second operand 22 states and 348 transitions. [2024-10-15 00:02:54,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 312 transitions, 3286 flow [2024-10-15 00:02:54,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 312 transitions, 2979 flow, removed 11 selfloop flow, removed 22 redundant places. [2024-10-15 00:02:54,047 INFO L231 Difference]: Finished difference. Result has 141 places, 89 transitions, 736 flow [2024-10-15 00:02:54,047 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=736, PETRI_PLACES=141, PETRI_TRANSITIONS=89} [2024-10-15 00:02:54,047 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 95 predicate places. [2024-10-15 00:02:54,047 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 89 transitions, 736 flow [2024-10-15 00:02:54,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 10.46) internal successors, (523), 50 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:54,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:54,048 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:02:54,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-10-15 00:02:54,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-10-15 00:02:54,249 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:54,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:54,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1114681988, now seen corresponding path program 6 times [2024-10-15 00:02:54,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:54,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936563813] [2024-10-15 00:02:54,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:54,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:54,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:54,559 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 22 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:54,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:54,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936563813] [2024-10-15 00:02:54,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936563813] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:54,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856755001] [2024-10-15 00:02:54,560 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-15 00:02:54,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:54,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:54,563 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:54,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-10-15 00:02:54,696 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-10-15 00:02:54,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:02:54,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-10-15 00:02:54,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:55,074 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 38 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:55,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 38 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:55,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856755001] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:55,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:55,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 49 [2024-10-15 00:02:55,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288330199] [2024-10-15 00:02:55,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:55,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-10-15 00:02:55,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:55,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-10-15 00:02:55,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=2050, Unknown=0, NotChecked=0, Total=2450 [2024-10-15 00:02:55,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-10-15 00:02:55,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 89 transitions, 736 flow. Second operand has 50 states, 50 states have (on average 10.5) internal successors, (525), 50 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:55,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:55,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-10-15 00:02:55,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:02:56,697 INFO L124 PetriNetUnfolderBase]: 2311/3856 cut-off events. [2024-10-15 00:02:56,697 INFO L125 PetriNetUnfolderBase]: For 18934/19174 co-relation queries the response was YES. [2024-10-15 00:02:56,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18345 conditions, 3856 events. 2311/3856 cut-off events. For 18934/19174 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21295 event pairs, 1073 based on Foata normal form. 163/3997 useless extension candidates. Maximal degree in co-relation 18309. Up to 2215 conditions per place. [2024-10-15 00:02:56,765 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 52 selfloop transitions, 12 changer transitions 193/267 dead transitions. [2024-10-15 00:02:56,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 267 transitions, 2889 flow [2024-10-15 00:02:56,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-15 00:02:56,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-15 00:02:56,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 319 transitions. [2024-10-15 00:02:56,766 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31521739130434784 [2024-10-15 00:02:56,767 INFO L175 Difference]: Start difference. First operand has 141 places, 89 transitions, 736 flow. Second operand 22 states and 319 transitions. [2024-10-15 00:02:56,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 267 transitions, 2889 flow [2024-10-15 00:02:56,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 267 transitions, 2804 flow, removed 30 selfloop flow, removed 11 redundant places. [2024-10-15 00:02:56,781 INFO L231 Difference]: Finished difference. Result has 161 places, 74 transitions, 574 flow [2024-10-15 00:02:56,781 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=574, PETRI_PLACES=161, PETRI_TRANSITIONS=74} [2024-10-15 00:02:56,781 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 115 predicate places. [2024-10-15 00:02:56,781 INFO L471 AbstractCegarLoop]: Abstraction has has 161 places, 74 transitions, 574 flow [2024-10-15 00:02:56,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 10.5) internal successors, (525), 50 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:56,782 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:02:56,782 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-10-15 00:02:56,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-10-15 00:02:56,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-10-15 00:02:56,982 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:02:56,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:02:56,983 INFO L85 PathProgramCache]: Analyzing trace with hash -994857802, now seen corresponding path program 7 times [2024-10-15 00:02:56,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:02:56,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652435574] [2024-10-15 00:02:56,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:02:56,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:02:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:57,598 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:57,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:02:57,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652435574] [2024-10-15 00:02:57,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652435574] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:02:57,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526083831] [2024-10-15 00:02:57,599 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-15 00:02:57,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:02:57,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:02:57,601 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:02:57,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-10-15 00:02:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:02:57,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-10-15 00:02:57,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:02:57,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-15 00:02:58,247 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:58,247 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:02:58,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-10-15 00:02:58,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2024-10-15 00:02:58,657 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:02:58,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526083831] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:02:58,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:02:58,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 51 [2024-10-15 00:02:58,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801246364] [2024-10-15 00:02:58,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:02:58,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-10-15 00:02:58,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:02:58,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-10-15 00:02:58,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=2593, Unknown=0, NotChecked=0, Total=2756 [2024-10-15 00:02:59,248 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-15 00:02:59,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 74 transitions, 574 flow. Second operand has 53 states, 53 states have (on average 11.358490566037736) internal successors, (602), 53 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:02:59,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:02:59,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-15 00:02:59,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:01,893 INFO L124 PetriNetUnfolderBase]: 1480/2773 cut-off events. [2024-10-15 00:03:01,894 INFO L125 PetriNetUnfolderBase]: For 14265/14358 co-relation queries the response was YES. [2024-10-15 00:03:01,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13287 conditions, 2773 events. 1480/2773 cut-off events. For 14265/14358 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14739 event pairs, 117 based on Foata normal form. 30/2795 useless extension candidates. Maximal degree in co-relation 13241. Up to 532 conditions per place. [2024-10-15 00:03:01,914 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 349 selfloop transitions, 35 changer transitions 0/395 dead transitions. [2024-10-15 00:03:01,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 395 transitions, 4249 flow [2024-10-15 00:03:01,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-15 00:03:01,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-10-15 00:03:01,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 481 transitions. [2024-10-15 00:03:01,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3605697151424288 [2024-10-15 00:03:01,915 INFO L175 Difference]: Start difference. First operand has 161 places, 74 transitions, 574 flow. Second operand 29 states and 481 transitions. [2024-10-15 00:03:01,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 395 transitions, 4249 flow [2024-10-15 00:03:01,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 395 transitions, 3863 flow, removed 181 selfloop flow, removed 31 redundant places. [2024-10-15 00:03:01,948 INFO L231 Difference]: Finished difference. Result has 140 places, 78 transitions, 621 flow [2024-10-15 00:03:01,948 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=621, PETRI_PLACES=140, PETRI_TRANSITIONS=78} [2024-10-15 00:03:01,948 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 94 predicate places. [2024-10-15 00:03:01,948 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 78 transitions, 621 flow [2024-10-15 00:03:01,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 11.358490566037736) internal successors, (602), 53 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:01,949 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:01,949 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-10-15 00:03:01,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-10-15 00:03:02,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-10-15 00:03:02,149 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:03:02,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:02,150 INFO L85 PathProgramCache]: Analyzing trace with hash -994857803, now seen corresponding path program 5 times [2024-10-15 00:03:02,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:02,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656691037] [2024-10-15 00:03:02,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:02,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:02,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:02,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656691037] [2024-10-15 00:03:02,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656691037] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:02,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802750895] [2024-10-15 00:03:02,768 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 00:03:02,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:02,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:02,770 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:02,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-10-15 00:03:02,926 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-10-15 00:03:02,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:03:02,928 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-10-15 00:03:02,930 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:03,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-15 00:03:03,512 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:03,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:03,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-15 00:03:03,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-10-15 00:03:03,875 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:03,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802750895] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:03,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:03,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 51 [2024-10-15 00:03:03,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17870227] [2024-10-15 00:03:03,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:03,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-10-15 00:03:03,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:03,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-10-15 00:03:03,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=2593, Unknown=0, NotChecked=0, Total=2756 [2024-10-15 00:03:04,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-15 00:03:04,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 78 transitions, 621 flow. Second operand has 53 states, 53 states have (on average 11.358490566037736) internal successors, (602), 53 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:04,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:04,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-15 00:03:04,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:07,514 INFO L124 PetriNetUnfolderBase]: 1428/2653 cut-off events. [2024-10-15 00:03:07,514 INFO L125 PetriNetUnfolderBase]: For 13134/13162 co-relation queries the response was YES. [2024-10-15 00:03:07,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12416 conditions, 2653 events. 1428/2653 cut-off events. For 13134/13162 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 13909 event pairs, 140 based on Foata normal form. 30/2643 useless extension candidates. Maximal degree in co-relation 12388. Up to 532 conditions per place. [2024-10-15 00:03:07,535 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 348 selfloop transitions, 35 changer transitions 0/394 dead transitions. [2024-10-15 00:03:07,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 394 transitions, 3941 flow [2024-10-15 00:03:07,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-15 00:03:07,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-10-15 00:03:07,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 480 transitions. [2024-10-15 00:03:07,537 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3598200899550225 [2024-10-15 00:03:07,537 INFO L175 Difference]: Start difference. First operand has 140 places, 78 transitions, 621 flow. Second operand 29 states and 480 transitions. [2024-10-15 00:03:07,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 394 transitions, 3941 flow [2024-10-15 00:03:07,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 394 transitions, 3846 flow, removed 3 selfloop flow, removed 26 redundant places. [2024-10-15 00:03:07,562 INFO L231 Difference]: Finished difference. Result has 142 places, 77 transitions, 584 flow [2024-10-15 00:03:07,562 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=584, PETRI_PLACES=142, PETRI_TRANSITIONS=77} [2024-10-15 00:03:07,562 INFO L277 CegarLoopForPetriNet]: 46 programPoint places, 96 predicate places. [2024-10-15 00:03:07,563 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 77 transitions, 584 flow [2024-10-15 00:03:07,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 11.358490566037736) internal successors, (602), 53 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:07,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-15 00:03:07,563 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-10-15 00:03:07,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-10-15 00:03:07,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-10-15 00:03:07,764 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2024-10-15 00:03:07,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-15 00:03:07,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1873210936, now seen corresponding path program 5 times [2024-10-15 00:03:07,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-15 00:03:07,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471707238] [2024-10-15 00:03:07,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-15 00:03:07,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-15 00:03:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-15 00:03:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:08,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-15 00:03:08,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471707238] [2024-10-15 00:03:08,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471707238] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-15 00:03:08,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389375137] [2024-10-15 00:03:08,361 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-15 00:03:08,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-15 00:03:08,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-15 00:03:08,362 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-15 00:03:08,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-10-15 00:03:08,507 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-10-15 00:03:08,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-15 00:03:08,509 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-10-15 00:03:08,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-15 00:03:08,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-15 00:03:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:08,798 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-15 00:03:09,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-10-15 00:03:09,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2024-10-15 00:03:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-15 00:03:09,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389375137] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-15 00:03:09,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-15 00:03:09,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 47 [2024-10-15 00:03:09,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164452855] [2024-10-15 00:03:09,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-15 00:03:09,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-15 00:03:09,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-15 00:03:09,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-15 00:03:09,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2205, Unknown=0, NotChecked=0, Total=2352 [2024-10-15 00:03:09,692 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-10-15 00:03:09,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 77 transitions, 584 flow. Second operand has 49 states, 49 states have (on average 11.408163265306122) internal successors, (559), 49 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-15 00:03:09,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-15 00:03:09,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-10-15 00:03:09,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-15 00:03:11,733 INFO L124 PetriNetUnfolderBase]: 1694/2987 cut-off events. [2024-10-15 00:03:11,733 INFO L125 PetriNetUnfolderBase]: For 16522/16620 co-relation queries the response was YES. [2024-10-15 00:03:11,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14179 conditions, 2987 events. 1694/2987 cut-off events. For 16522/16620 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 15913 event pairs, 193 based on Foata normal form. 33/2952 useless extension candidates. Maximal degree in co-relation 14152. Up to 626 conditions per place. [2024-10-15 00:03:11,752 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 382 selfloop transitions, 35 changer transitions 0/428 dead transitions. [2024-10-15 00:03:11,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 428 transitions, 4777 flow [2024-10-15 00:03:11,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-15 00:03:11,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-10-15 00:03:11,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 466 transitions. [2024-10-15 00:03:11,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3493253373313343 [2024-10-15 00:03:11,753 INFO L175 Difference]: Start difference. First operand has 142 places, 77 transitions, 584 flow. Second operand 29 states and 466 transitions. [2024-10-15 00:03:11,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 428 transitions, 4777 flow [2024-10-15 00:03:11,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 428 transitions, 4344 flow, removed 0 selfloop flow, removed 26 redundant places.