./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.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 20832c4ec3f8ccecbcf7cfcec0aecbbc925bfb9e6d8397db46b5825bb40681b3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-23 01:58:33,781 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 01:58:33,849 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-23 01:58:33,853 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 01:58:33,853 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 01:58:33,870 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 01:58:33,871 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 01:58:33,871 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 01:58:33,872 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 01:58:33,872 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 01:58:33,872 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 01:58:33,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 01:58:33,873 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 01:58:33,876 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 01:58:33,876 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 01:58:33,876 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 01:58:33,877 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 01:58:33,877 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 01:58:33,878 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 01:58:33,878 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 01:58:33,878 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 01:58:33,878 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 01:58:33,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 01:58:33,879 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 01:58:33,879 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-23 01:58:33,879 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-23 01:58:33,879 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 01:58:33,880 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 01:58:33,880 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 01:58:33,880 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 01:58:33,880 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 01:58:33,880 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 01:58:33,880 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 01:58:33,881 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 01:58:33,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:58:33,881 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 01:58:33,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 01:58:33,881 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 01:58:33,881 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 01:58:33,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 01:58:33,882 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 01:58:33,883 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 01:58:33,883 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 01:58:33,884 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 01:58:33,884 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20832c4ec3f8ccecbcf7cfcec0aecbbc925bfb9e6d8397db46b5825bb40681b3 [2024-11-23 01:58:34,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 01:58:34,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 01:58:34,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 01:58:34,160 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 01:58:34,160 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 01:58:34,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2024-11-23 01:58:35,479 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-23 01:58:35,665 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 01:58:35,666 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-three-array-sum-alt.wvr.c [2024-11-23 01:58:35,672 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f168c1181/e53dc94fc99f4147a6b06ab2fd8ccddb/FLAGb1589274d [2024-11-23 01:58:35,687 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f168c1181/e53dc94fc99f4147a6b06ab2fd8ccddb [2024-11-23 01:58:35,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 01:58:35,692 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 01:58:35,693 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 01:58:35,694 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 01:58:35,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 01:58:35,700 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:58:35" (1/1) ... [2024-11-23 01:58:35,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff91b61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:35, skipping insertion in model container [2024-11-23 01:58:35,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:58:35" (1/1) ... [2024-11-23 01:58:35,728 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 01:58:35,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:58:35,969 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 01:58:36,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 01:58:36,042 INFO L204 MainTranslator]: Completed translation [2024-11-23 01:58:36,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:36 WrapperNode [2024-11-23 01:58:36,045 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 01:58:36,046 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 01:58:36,049 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 01:58:36,049 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 01:58:36,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:36" (1/1) ... [2024-11-23 01:58:36,068 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:36" (1/1) ... [2024-11-23 01:58:36,124 INFO L138 Inliner]: procedures = 25, calls = 31, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 349 [2024-11-23 01:58:36,125 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 01:58:36,125 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 01:58:36,126 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 01:58:36,126 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 01:58:36,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:36" (1/1) ... [2024-11-23 01:58:36,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:36" (1/1) ... [2024-11-23 01:58:36,148 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:36" (1/1) ... [2024-11-23 01:58:36,185 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-23 01:58:36,189 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:36" (1/1) ... [2024-11-23 01:58:36,190 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:36" (1/1) ... [2024-11-23 01:58:36,204 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:36" (1/1) ... [2024-11-23 01:58:36,215 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:36" (1/1) ... [2024-11-23 01:58:36,219 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:36" (1/1) ... [2024-11-23 01:58:36,224 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:36" (1/1) ... [2024-11-23 01:58:36,231 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 01:58:36,235 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 01:58:36,238 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 01:58:36,238 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 01:58:36,239 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:36" (1/1) ... [2024-11-23 01:58:36,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 01:58:36,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:58:36,292 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) [2024-11-23 01:58:36,295 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 [2024-11-23 01:58:36,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 01:58:36,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 01:58:36,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 01:58:36,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 01:58:36,340 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 01:58:36,340 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-23 01:58:36,340 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-23 01:58:36,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 01:58:36,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 01:58:36,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 01:58:36,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 01:58:36,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 01:58:36,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 01:58:36,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 01:58:36,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 01:58:36,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 01:58:36,342 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 01:58:36,454 INFO L238 CfgBuilder]: Building ICFG [2024-11-23 01:58:36,456 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 01:58:36,889 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 01:58:36,890 INFO L287 CfgBuilder]: Performing block encoding [2024-11-23 01:58:37,090 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 01:58:37,090 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-23 01:58:37,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:58:37 BoogieIcfgContainer [2024-11-23 01:58:37,091 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 01:58:37,092 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 01:58:37,092 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 01:58:37,095 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 01:58:37,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:58:35" (1/3) ... [2024-11-23 01:58:37,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cde3056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:58:37, skipping insertion in model container [2024-11-23 01:58:37,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:58:36" (2/3) ... [2024-11-23 01:58:37,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cde3056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:58:37, skipping insertion in model container [2024-11-23 01:58:37,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:58:37" (3/3) ... [2024-11-23 01:58:37,099 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2024-11-23 01:58:37,111 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 01:58:37,112 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2024-11-23 01:58:37,112 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 01:58:37,167 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-23 01:58:37,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 143 transitions, 307 flow [2024-11-23 01:58:37,271 INFO L124 PetriNetUnfolderBase]: 16/140 cut-off events. [2024-11-23 01:58:37,271 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-23 01:58:37,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 140 events. 16/140 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 483 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2024-11-23 01:58:37,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 143 transitions, 307 flow [2024-11-23 01:58:37,315 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 139 transitions, 296 flow [2024-11-23 01:58:37,326 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 01:58:37,336 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;@357190f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 01:58:37,337 INFO L334 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2024-11-23 01:58:37,342 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 01:58:37,342 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-23 01:58:37,342 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 01:58:37,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:37,343 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 01:58:37,344 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-23 01:58:37,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:37,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1085042, now seen corresponding path program 1 times [2024-11-23 01:58:37,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:37,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184160946] [2024-11-23 01:58:37,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:37,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:37,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:37,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184160946] [2024-11-23 01:58:37,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184160946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:58:37,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:58:37,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 01:58:37,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964176072] [2024-11-23 01:58:37,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:58:37,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:58:37,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:37,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:58:37,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:58:37,696 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2024-11-23 01:58:37,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 139 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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) [2024-11-23 01:58:37,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:37,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2024-11-23 01:58:37,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:38,841 INFO L124 PetriNetUnfolderBase]: 6001/13087 cut-off events. [2024-11-23 01:58:38,842 INFO L125 PetriNetUnfolderBase]: For 338/338 co-relation queries the response was YES. [2024-11-23 01:58:38,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21245 conditions, 13087 events. 6001/13087 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 123416 event pairs, 3915 based on Foata normal form. 3/10275 useless extension candidates. Maximal degree in co-relation 20174. Up to 7899 conditions per place. [2024-11-23 01:58:38,930 INFO L140 encePairwiseOnDemand]: 127/143 looper letters, 61 selfloop transitions, 10 changer transitions 0/148 dead transitions. [2024-11-23 01:58:38,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 148 transitions, 456 flow [2024-11-23 01:58:38,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:58:38,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:58:38,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 397 transitions. [2024-11-23 01:58:38,941 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6940559440559441 [2024-11-23 01:58:38,943 INFO L175 Difference]: Start difference. First operand has 133 places, 139 transitions, 296 flow. Second operand 4 states and 397 transitions. [2024-11-23 01:58:38,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 148 transitions, 456 flow [2024-11-23 01:58:38,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 148 transitions, 444 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-23 01:58:38,963 INFO L231 Difference]: Finished difference. Result has 133 places, 148 transitions, 372 flow [2024-11-23 01:58:38,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=372, PETRI_PLACES=133, PETRI_TRANSITIONS=148} [2024-11-23 01:58:38,970 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 0 predicate places. [2024-11-23 01:58:38,970 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 148 transitions, 372 flow [2024-11-23 01:58:38,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.75) internal successors, (323), 4 states have internal predecessors, (323), 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) [2024-11-23 01:58:38,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:38,971 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-23 01:58:38,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 01:58:38,972 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-23 01:58:38,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:38,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2034141157, now seen corresponding path program 1 times [2024-11-23 01:58:38,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:38,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833576583] [2024-11-23 01:58:38,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:38,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:39,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:39,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833576583] [2024-11-23 01:58:39,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833576583] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:58:39,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991280740] [2024-11-23 01:58:39,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:39,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:58:39,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:58:39,122 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) [2024-11-23 01:58:39,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 01:58:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:39,187 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:58:39,190 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:58:39,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:39,225 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 01:58:39,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991280740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:58:39,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 01:58:39,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 01:58:39,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083252549] [2024-11-23 01:58:39,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:58:39,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 01:58:39,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:39,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 01:58:39,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-23 01:58:39,244 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2024-11-23 01:58:39,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 148 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 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) [2024-11-23 01:58:39,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:39,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2024-11-23 01:58:39,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:40,270 INFO L124 PetriNetUnfolderBase]: 6001/13084 cut-off events. [2024-11-23 01:58:40,271 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2024-11-23 01:58:40,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21095 conditions, 13084 events. 6001/13084 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 123544 event pairs, 3915 based on Foata normal form. 3/10277 useless extension candidates. Maximal degree in co-relation 21022. Up to 7884 conditions per place. [2024-11-23 01:58:40,364 INFO L140 encePairwiseOnDemand]: 130/143 looper letters, 51 selfloop transitions, 17 changer transitions 0/145 dead transitions. [2024-11-23 01:58:40,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 145 transitions, 496 flow [2024-11-23 01:58:40,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:58:40,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:58:40,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 551 transitions. [2024-11-23 01:58:40,367 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6421911421911422 [2024-11-23 01:58:40,367 INFO L175 Difference]: Start difference. First operand has 133 places, 148 transitions, 372 flow. Second operand 6 states and 551 transitions. [2024-11-23 01:58:40,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 145 transitions, 496 flow [2024-11-23 01:58:40,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 145 transitions, 496 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:58:40,371 INFO L231 Difference]: Finished difference. Result has 135 places, 145 transitions, 394 flow [2024-11-23 01:58:40,371 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=394, PETRI_PLACES=135, PETRI_TRANSITIONS=145} [2024-11-23 01:58:40,372 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 2 predicate places. [2024-11-23 01:58:40,372 INFO L471 AbstractCegarLoop]: Abstraction has has 135 places, 145 transitions, 394 flow [2024-11-23 01:58:40,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.83333333333333) internal successors, (485), 6 states have internal predecessors, (485), 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) [2024-11-23 01:58:40,373 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:40,374 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-23 01:58:40,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 01:58:40,577 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 [2024-11-23 01:58:40,578 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-23 01:58:40,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:40,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1366134692, now seen corresponding path program 1 times [2024-11-23 01:58:40,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:40,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967782554] [2024-11-23 01:58:40,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:40,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:40,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:40,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967782554] [2024-11-23 01:58:40,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967782554] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:58:40,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047446762] [2024-11-23 01:58:40,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:40,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:58:40,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:58:40,655 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) [2024-11-23 01:58:40,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 01:58:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:40,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 01:58:40,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:58:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:40,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:58:40,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:40,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047446762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:58:40,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:58:40,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-23 01:58:40,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961310835] [2024-11-23 01:58:40,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:58:40,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 01:58:40,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:40,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 01:58:40,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-23 01:58:40,810 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2024-11-23 01:58:40,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 145 transitions, 394 flow. Second operand has 12 states, 12 states have (on average 81.08333333333333) internal successors, (973), 12 states have internal predecessors, (973), 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) [2024-11-23 01:58:40,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:40,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2024-11-23 01:58:40,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:41,749 INFO L124 PetriNetUnfolderBase]: 6010/13120 cut-off events. [2024-11-23 01:58:41,749 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2024-11-23 01:58:41,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21236 conditions, 13120 events. 6010/13120 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 123835 event pairs, 3915 based on Foata normal form. 9/10319 useless extension candidates. Maximal degree in co-relation 21024. Up to 7899 conditions per place. [2024-11-23 01:58:41,836 INFO L140 encePairwiseOnDemand]: 130/143 looper letters, 58 selfloop transitions, 37 changer transitions 0/172 dead transitions. [2024-11-23 01:58:41,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 172 transitions, 758 flow [2024-11-23 01:58:41,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 01:58:41,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-23 01:58:41,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 904 transitions. [2024-11-23 01:58:41,839 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6321678321678321 [2024-11-23 01:58:41,839 INFO L175 Difference]: Start difference. First operand has 135 places, 145 transitions, 394 flow. Second operand 10 states and 904 transitions. [2024-11-23 01:58:41,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 172 transitions, 758 flow [2024-11-23 01:58:41,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 172 transitions, 675 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-23 01:58:41,847 INFO L231 Difference]: Finished difference. Result has 142 places, 172 transitions, 609 flow [2024-11-23 01:58:41,847 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=609, PETRI_PLACES=142, PETRI_TRANSITIONS=172} [2024-11-23 01:58:41,848 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 9 predicate places. [2024-11-23 01:58:41,851 INFO L471 AbstractCegarLoop]: Abstraction has has 142 places, 172 transitions, 609 flow [2024-11-23 01:58:41,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.08333333333333) internal successors, (973), 12 states have internal predecessors, (973), 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) [2024-11-23 01:58:41,852 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:41,852 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:58:41,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 01:58:42,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-23 01:58:42,053 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-23 01:58:42,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:42,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1124452014, now seen corresponding path program 1 times [2024-11-23 01:58:42,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:42,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629757162] [2024-11-23 01:58:42,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:42,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:42,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:42,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629757162] [2024-11-23 01:58:42,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629757162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:58:42,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:58:42,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:58:42,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708124735] [2024-11-23 01:58:42,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:58:42,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:58:42,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:42,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:58:42,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:58:42,166 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2024-11-23 01:58:42,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 172 transitions, 609 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 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) [2024-11-23 01:58:42,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:42,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2024-11-23 01:58:42,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:43,758 INFO L124 PetriNetUnfolderBase]: 12094/21962 cut-off events. [2024-11-23 01:58:43,759 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2024-11-23 01:58:43,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38238 conditions, 21962 events. 12094/21962 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 897. Compared 191618 event pairs, 3873 based on Foata normal form. 544/18388 useless extension candidates. Maximal degree in co-relation 38140. Up to 7304 conditions per place. [2024-11-23 01:58:43,905 INFO L140 encePairwiseOnDemand]: 135/143 looper letters, 152 selfloop transitions, 5 changer transitions 0/231 dead transitions. [2024-11-23 01:58:43,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 231 transitions, 1045 flow [2024-11-23 01:58:43,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:58:43,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:58:43,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 444 transitions. [2024-11-23 01:58:43,909 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7762237762237763 [2024-11-23 01:58:43,910 INFO L175 Difference]: Start difference. First operand has 142 places, 172 transitions, 609 flow. Second operand 4 states and 444 transitions. [2024-11-23 01:58:43,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 231 transitions, 1045 flow [2024-11-23 01:58:43,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 231 transitions, 1008 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-23 01:58:43,915 INFO L231 Difference]: Finished difference. Result has 145 places, 174 transitions, 606 flow [2024-11-23 01:58:43,915 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=606, PETRI_PLACES=145, PETRI_TRANSITIONS=174} [2024-11-23 01:58:43,917 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 12 predicate places. [2024-11-23 01:58:43,917 INFO L471 AbstractCegarLoop]: Abstraction has has 145 places, 174 transitions, 606 flow [2024-11-23 01:58:43,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 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) [2024-11-23 01:58:43,917 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:43,917 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:58:43,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 01:58:43,918 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-23 01:58:43,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:43,918 INFO L85 PathProgramCache]: Analyzing trace with hash -498272856, now seen corresponding path program 1 times [2024-11-23 01:58:43,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:43,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218544391] [2024-11-23 01:58:43,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:43,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:43,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:44,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:44,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:44,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218544391] [2024-11-23 01:58:44,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218544391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:58:44,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:58:44,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:58:44,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390731583] [2024-11-23 01:58:44,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:58:44,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:58:44,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:44,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:58:44,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:58:44,008 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 143 [2024-11-23 01:58:44,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 174 transitions, 606 flow. Second operand has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 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) [2024-11-23 01:58:44,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:44,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 143 [2024-11-23 01:58:44,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:45,921 INFO L124 PetriNetUnfolderBase]: 9318/20210 cut-off events. [2024-11-23 01:58:45,924 INFO L125 PetriNetUnfolderBase]: For 3068/3448 co-relation queries the response was YES. [2024-11-23 01:58:46,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34796 conditions, 20210 events. 9318/20210 cut-off events. For 3068/3448 co-relation queries the response was YES. Maximal size of possible extension queue 728. Compared 196513 event pairs, 5688 based on Foata normal form. 463/16896 useless extension candidates. Maximal degree in co-relation 34643. Up to 9525 conditions per place. [2024-11-23 01:58:46,205 INFO L140 encePairwiseOnDemand]: 133/143 looper letters, 167 selfloop transitions, 24 changer transitions 0/271 dead transitions. [2024-11-23 01:58:46,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 271 transitions, 1319 flow [2024-11-23 01:58:46,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:58:46,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:58:46,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 661 transitions. [2024-11-23 01:58:46,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7703962703962703 [2024-11-23 01:58:46,212 INFO L175 Difference]: Start difference. First operand has 145 places, 174 transitions, 606 flow. Second operand 6 states and 661 transitions. [2024-11-23 01:58:46,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 271 transitions, 1319 flow [2024-11-23 01:58:46,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 271 transitions, 1319 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:58:46,244 INFO L231 Difference]: Finished difference. Result has 153 places, 184 transitions, 740 flow [2024-11-23 01:58:46,245 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=740, PETRI_PLACES=153, PETRI_TRANSITIONS=184} [2024-11-23 01:58:46,246 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 20 predicate places. [2024-11-23 01:58:46,246 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 184 transitions, 740 flow [2024-11-23 01:58:46,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.4) internal successors, (437), 5 states have internal predecessors, (437), 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) [2024-11-23 01:58:46,246 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:46,247 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:58:46,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 01:58:46,247 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-23 01:58:46,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:46,247 INFO L85 PathProgramCache]: Analyzing trace with hash -209031877, now seen corresponding path program 1 times [2024-11-23 01:58:46,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:46,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074844385] [2024-11-23 01:58:46,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:46,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:46,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:46,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074844385] [2024-11-23 01:58:46,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074844385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:58:46,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:58:46,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:58:46,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369341532] [2024-11-23 01:58:46,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:58:46,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:58:46,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:46,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:58:46,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:58:46,310 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2024-11-23 01:58:46,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 184 transitions, 740 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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) [2024-11-23 01:58:46,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:46,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2024-11-23 01:58:46,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:48,959 INFO L124 PetriNetUnfolderBase]: 20139/36717 cut-off events. [2024-11-23 01:58:48,959 INFO L125 PetriNetUnfolderBase]: For 10366/10726 co-relation queries the response was YES. [2024-11-23 01:58:49,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72670 conditions, 36717 events. 20139/36717 cut-off events. For 10366/10726 co-relation queries the response was YES. Maximal size of possible extension queue 1299. Compared 334817 event pairs, 6781 based on Foata normal form. 1106/32499 useless extension candidates. Maximal degree in co-relation 72509. Up to 12828 conditions per place. [2024-11-23 01:58:49,383 INFO L140 encePairwiseOnDemand]: 135/143 looper letters, 170 selfloop transitions, 5 changer transitions 0/249 dead transitions. [2024-11-23 01:58:49,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 249 transitions, 1288 flow [2024-11-23 01:58:49,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:58:49,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:58:49,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 442 transitions. [2024-11-23 01:58:49,386 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2024-11-23 01:58:49,386 INFO L175 Difference]: Start difference. First operand has 153 places, 184 transitions, 740 flow. Second operand 4 states and 442 transitions. [2024-11-23 01:58:49,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 249 transitions, 1288 flow [2024-11-23 01:58:49,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 249 transitions, 1284 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-11-23 01:58:49,497 INFO L231 Difference]: Finished difference. Result has 158 places, 186 transitions, 770 flow [2024-11-23 01:58:49,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=770, PETRI_PLACES=158, PETRI_TRANSITIONS=186} [2024-11-23 01:58:49,500 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 25 predicate places. [2024-11-23 01:58:49,500 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 186 transitions, 770 flow [2024-11-23 01:58:49,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 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) [2024-11-23 01:58:49,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:49,501 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:58:49,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 01:58:49,501 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-23 01:58:49,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:49,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2109947640, now seen corresponding path program 1 times [2024-11-23 01:58:49,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:49,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622829442] [2024-11-23 01:58:49,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:49,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:49,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:49,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:49,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:49,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622829442] [2024-11-23 01:58:49,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622829442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:58:49,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:58:49,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:58:49,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799540049] [2024-11-23 01:58:49,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:58:49,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:58:49,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:49,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:58:49,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:58:49,582 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 143 [2024-11-23 01:58:49,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 186 transitions, 770 flow. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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) [2024-11-23 01:58:49,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:49,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 143 [2024-11-23 01:58:49,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:51,245 INFO L124 PetriNetUnfolderBase]: 9892/21950 cut-off events. [2024-11-23 01:58:51,245 INFO L125 PetriNetUnfolderBase]: For 8580/9475 co-relation queries the response was YES. [2024-11-23 01:58:51,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41847 conditions, 21950 events. 9892/21950 cut-off events. For 8580/9475 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 223926 event pairs, 6612 based on Foata normal form. 569/18805 useless extension candidates. Maximal degree in co-relation 41683. Up to 12297 conditions per place. [2024-11-23 01:58:51,394 INFO L140 encePairwiseOnDemand]: 133/143 looper letters, 154 selfloop transitions, 24 changer transitions 0/258 dead transitions. [2024-11-23 01:58:51,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 258 transitions, 1384 flow [2024-11-23 01:58:51,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:58:51,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:58:51,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 646 transitions. [2024-11-23 01:58:51,397 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.752913752913753 [2024-11-23 01:58:51,397 INFO L175 Difference]: Start difference. First operand has 158 places, 186 transitions, 770 flow. Second operand 6 states and 646 transitions. [2024-11-23 01:58:51,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 258 transitions, 1384 flow [2024-11-23 01:58:51,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 258 transitions, 1384 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:58:51,428 INFO L231 Difference]: Finished difference. Result has 165 places, 188 transitions, 840 flow [2024-11-23 01:58:51,429 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=840, PETRI_PLACES=165, PETRI_TRANSITIONS=188} [2024-11-23 01:58:51,429 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 32 predicate places. [2024-11-23 01:58:51,429 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 188 transitions, 840 flow [2024-11-23 01:58:51,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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) [2024-11-23 01:58:51,430 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:51,430 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:58:51,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 01:58:51,430 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-23 01:58:51,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:51,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1930119192, now seen corresponding path program 1 times [2024-11-23 01:58:51,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:51,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835032954] [2024-11-23 01:58:51,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:51,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:51,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:51,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:51,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835032954] [2024-11-23 01:58:51,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835032954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:58:51,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:58:51,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:58:51,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569288135] [2024-11-23 01:58:51,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:58:51,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:58:51,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:51,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:58:51,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:58:51,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 143 [2024-11-23 01:58:51,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 188 transitions, 840 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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) [2024-11-23 01:58:51,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:51,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 143 [2024-11-23 01:58:51,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:54,741 INFO L124 PetriNetUnfolderBase]: 22898/41978 cut-off events. [2024-11-23 01:58:54,741 INFO L125 PetriNetUnfolderBase]: For 23550/25323 co-relation queries the response was YES. [2024-11-23 01:58:54,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91427 conditions, 41978 events. 22898/41978 cut-off events. For 23550/25323 co-relation queries the response was YES. Maximal size of possible extension queue 1746. Compared 397977 event pairs, 7161 based on Foata normal form. 2063/38697 useless extension candidates. Maximal degree in co-relation 91256. Up to 13115 conditions per place. [2024-11-23 01:58:55,142 INFO L140 encePairwiseOnDemand]: 128/143 looper letters, 174 selfloop transitions, 10 changer transitions 0/252 dead transitions. [2024-11-23 01:58:55,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 252 transitions, 1468 flow [2024-11-23 01:58:55,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:58:55,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:58:55,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 418 transitions. [2024-11-23 01:58:55,145 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2024-11-23 01:58:55,145 INFO L175 Difference]: Start difference. First operand has 165 places, 188 transitions, 840 flow. Second operand 4 states and 418 transitions. [2024-11-23 01:58:55,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 252 transitions, 1468 flow [2024-11-23 01:58:55,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 252 transitions, 1432 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:58:55,319 INFO L231 Difference]: Finished difference. Result has 166 places, 192 transitions, 870 flow [2024-11-23 01:58:55,319 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=870, PETRI_PLACES=166, PETRI_TRANSITIONS=192} [2024-11-23 01:58:55,320 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 33 predicate places. [2024-11-23 01:58:55,320 INFO L471 AbstractCegarLoop]: Abstraction has has 166 places, 192 transitions, 870 flow [2024-11-23 01:58:55,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 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) [2024-11-23 01:58:55,320 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:55,320 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:58:55,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 01:58:55,321 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-23 01:58:55,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:55,321 INFO L85 PathProgramCache]: Analyzing trace with hash 295848452, now seen corresponding path program 1 times [2024-11-23 01:58:55,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:55,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346967847] [2024-11-23 01:58:55,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:58:55,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:58:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:58:55,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:55,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346967847] [2024-11-23 01:58:55,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346967847] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:58:55,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:58:55,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 01:58:55,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623718699] [2024-11-23 01:58:55,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:58:55,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 01:58:55,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:55,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 01:58:55,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 01:58:55,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 143 [2024-11-23 01:58:55,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 192 transitions, 870 flow. Second operand has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2024-11-23 01:58:55,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:55,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 143 [2024-11-23 01:58:55,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:58:57,660 INFO L124 PetriNetUnfolderBase]: 13897/29780 cut-off events. [2024-11-23 01:58:57,661 INFO L125 PetriNetUnfolderBase]: For 19440/21032 co-relation queries the response was YES. [2024-11-23 01:58:57,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65058 conditions, 29780 events. 13897/29780 cut-off events. For 19440/21032 co-relation queries the response was YES. Maximal size of possible extension queue 1298. Compared 314360 event pairs, 9776 based on Foata normal form. 847/27378 useless extension candidates. Maximal degree in co-relation 64888. Up to 17787 conditions per place. [2024-11-23 01:58:58,145 INFO L140 encePairwiseOnDemand]: 133/143 looper letters, 133 selfloop transitions, 24 changer transitions 0/237 dead transitions. [2024-11-23 01:58:58,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 237 transitions, 1396 flow [2024-11-23 01:58:58,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 01:58:58,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 01:58:58,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 621 transitions. [2024-11-23 01:58:58,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7237762237762237 [2024-11-23 01:58:58,149 INFO L175 Difference]: Start difference. First operand has 166 places, 192 transitions, 870 flow. Second operand 6 states and 621 transitions. [2024-11-23 01:58:58,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 237 transitions, 1396 flow [2024-11-23 01:58:58,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 237 transitions, 1396 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 01:58:58,324 INFO L231 Difference]: Finished difference. Result has 173 places, 194 transitions, 940 flow [2024-11-23 01:58:58,324 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=940, PETRI_PLACES=173, PETRI_TRANSITIONS=194} [2024-11-23 01:58:58,325 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 40 predicate places. [2024-11-23 01:58:58,325 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 194 transitions, 940 flow [2024-11-23 01:58:58,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 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) [2024-11-23 01:58:58,326 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:58:58,326 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-11-23 01:58:58,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 01:58:58,326 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-23 01:58:58,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:58:58,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1375255917, now seen corresponding path program 2 times [2024-11-23 01:58:58,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:58:58,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121404310] [2024-11-23 01:58:58,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:58:58,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:58:58,336 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:58:58,337 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:58:58,361 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 01:58:58,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:58:58,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121404310] [2024-11-23 01:58:58,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121404310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:58:58,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043548277] [2024-11-23 01:58:58,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 01:58:58,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:58:58,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:58:58,364 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) [2024-11-23 01:58:58,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 01:58:58,427 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 01:58:58,427 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 01:58:58,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 01:58:58,429 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:58:58,454 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 01:58:58,454 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:58:58,486 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-23 01:58:58,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043548277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:58:58,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:58:58,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-11-23 01:58:58,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819495341] [2024-11-23 01:58:58,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:58:58,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:58:58,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:58:58,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:58:58,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:58:58,497 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 143 [2024-11-23 01:58:58,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 194 transitions, 940 flow. Second operand has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:58:58,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:58:58,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 143 [2024-11-23 01:58:58,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:59:01,136 INFO L124 PetriNetUnfolderBase]: 13980/30830 cut-off events. [2024-11-23 01:59:01,137 INFO L125 PetriNetUnfolderBase]: For 20623/22182 co-relation queries the response was YES. [2024-11-23 01:59:01,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67250 conditions, 30830 events. 13980/30830 cut-off events. For 20623/22182 co-relation queries the response was YES. Maximal size of possible extension queue 1426. Compared 334479 event pairs, 9883 based on Foata normal form. 822/27899 useless extension candidates. Maximal degree in co-relation 67074. Up to 18186 conditions per place. [2024-11-23 01:59:01,460 INFO L140 encePairwiseOnDemand]: 138/143 looper letters, 100 selfloop transitions, 16 changer transitions 0/193 dead transitions. [2024-11-23 01:59:01,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 193 transitions, 1162 flow [2024-11-23 01:59:01,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:59:01,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:59:01,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2024-11-23 01:59:01,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625874125874126 [2024-11-23 01:59:01,462 INFO L175 Difference]: Start difference. First operand has 173 places, 194 transitions, 940 flow. Second operand 4 states and 379 transitions. [2024-11-23 01:59:01,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 193 transitions, 1162 flow [2024-11-23 01:59:01,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 193 transitions, 1126 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 01:59:01,604 INFO L231 Difference]: Finished difference. Result has 172 places, 193 transitions, 926 flow [2024-11-23 01:59:01,604 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=926, PETRI_PLACES=172, PETRI_TRANSITIONS=193} [2024-11-23 01:59:01,605 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 39 predicate places. [2024-11-23 01:59:01,606 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 193 transitions, 926 flow [2024-11-23 01:59:01,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 01:59:01,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:59:01,606 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2024-11-23 01:59:01,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 01:59:01,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:59:01,807 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-23 01:59:01,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:59:01,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1620561571, now seen corresponding path program 1 times [2024-11-23 01:59:01,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:59:01,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136028359] [2024-11-23 01:59:01,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:59:01,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:59:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:59:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-23 01:59:01,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:59:01,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136028359] [2024-11-23 01:59:01,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136028359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 01:59:01,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 01:59:01,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 01:59:01,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204950496] [2024-11-23 01:59:01,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 01:59:01,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 01:59:01,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:59:01,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 01:59:01,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 01:59:01,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 143 [2024-11-23 01:59:01,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 193 transitions, 926 flow. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 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) [2024-11-23 01:59:01,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:59:01,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 143 [2024-11-23 01:59:01,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 01:59:04,604 INFO L124 PetriNetUnfolderBase]: 13970/30790 cut-off events. [2024-11-23 01:59:04,605 INFO L125 PetriNetUnfolderBase]: For 20478/22037 co-relation queries the response was YES. [2024-11-23 01:59:04,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67086 conditions, 30790 events. 13970/30790 cut-off events. For 20478/22037 co-relation queries the response was YES. Maximal size of possible extension queue 1426. Compared 334240 event pairs, 9883 based on Foata normal form. 823/27861 useless extension candidates. Maximal degree in co-relation 66973. Up to 18150 conditions per place. [2024-11-23 01:59:04,956 INFO L140 encePairwiseOnDemand]: 134/143 looper letters, 92 selfloop transitions, 16 changer transitions 0/187 dead transitions. [2024-11-23 01:59:04,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 187 transitions, 1062 flow [2024-11-23 01:59:04,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 01:59:04,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 01:59:04,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 413 transitions. [2024-11-23 01:59:04,960 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.722027972027972 [2024-11-23 01:59:04,961 INFO L175 Difference]: Start difference. First operand has 172 places, 193 transitions, 926 flow. Second operand 4 states and 413 transitions. [2024-11-23 01:59:04,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 187 transitions, 1062 flow [2024-11-23 01:59:05,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 187 transitions, 1018 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 01:59:05,114 INFO L231 Difference]: Finished difference. Result has 172 places, 187 transitions, 841 flow [2024-11-23 01:59:05,114 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=841, PETRI_PLACES=172, PETRI_TRANSITIONS=187} [2024-11-23 01:59:05,115 INFO L277 CegarLoopForPetriNet]: 133 programPoint places, 39 predicate places. [2024-11-23 01:59:05,115 INFO L471 AbstractCegarLoop]: Abstraction has has 172 places, 187 transitions, 841 flow [2024-11-23 01:59:05,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 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) [2024-11-23 01:59:05,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-23 01:59:05,116 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 01:59:05,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 01:59:05,116 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 72 more)] === [2024-11-23 01:59:05,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 01:59:05,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1529307364, now seen corresponding path program 1 times [2024-11-23 01:59:05,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 01:59:05,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625745388] [2024-11-23 01:59:05,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:59:05,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 01:59:05,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:59:05,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:59:05,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 01:59:05,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625745388] [2024-11-23 01:59:05,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625745388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 01:59:05,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610749175] [2024-11-23 01:59:05,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 01:59:05,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 01:59:05,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-23 01:59:05,801 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) [2024-11-23 01:59:05,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 01:59:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 01:59:05,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-23 01:59:05,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 01:59:05,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 01:59:05,925 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 [2024-11-23 01:59:05,966 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-23 01:59:05,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-23 01:59:05,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-23 01:59:06,034 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-23 01:59:06,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-23 01:59:06,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-23 01:59:06,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-23 01:59:06,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:59:06,122 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 01:59:06,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:59:06,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2024-11-23 01:59:06,439 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 01:59:06,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 135 [2024-11-23 01:59:06,454 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 27 treesize of output 25 [2024-11-23 01:59:06,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-11-23 01:59:06,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 01:59:06,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610749175] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 01:59:06,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 01:59:06,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 23 [2024-11-23 01:59:06,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407336943] [2024-11-23 01:59:06,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 01:59:06,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-23 01:59:06,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 01:59:06,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-23 01:59:06,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=510, Unknown=6, NotChecked=0, Total=600 [2024-11-23 01:59:06,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 143 [2024-11-23 01:59:06,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 187 transitions, 841 flow. Second operand has 25 states, 25 states have (on average 78.72) internal successors, (1968), 25 states have internal predecessors, (1968), 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) [2024-11-23 01:59:06,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 01:59:06,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 143 [2024-11-23 01:59:06,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand