./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/goblint-regression/04-mutex_36-trylock_nr.i -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 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 13:57:17,988 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 13:57:18,056 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-19 13:57:18,061 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 13:57:18,061 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 13:57:18,093 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 13:57:18,094 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 13:57:18,094 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 13:57:18,095 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 13:57:18,095 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 13:57:18,096 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 13:57:18,096 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 13:57:18,097 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 13:57:18,097 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 13:57:18,097 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 13:57:18,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 13:57:18,098 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 13:57:18,099 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 13:57:18,099 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 13:57:18,099 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 13:57:18,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 13:57:18,100 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 13:57:18,101 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 13:57:18,101 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 13:57:18,101 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 13:57:18,101 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-19 13:57:18,102 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 13:57:18,102 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 13:57:18,102 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 13:57:18,103 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 13:57:18,107 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 13:57:18,108 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 13:57:18,108 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 13:57:18,108 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 13:57:18,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:57:18,113 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 13:57:18,113 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 13:57:18,113 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 13:57:18,113 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 13:57:18,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 13:57:18,114 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 13:57:18,114 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 13:57:18,114 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 13:57:18,115 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 13:57:18,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e [2024-11-19 13:57:18,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 13:57:18,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 13:57:18,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 13:57:18,383 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 13:57:18,383 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 13:57:18,384 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2024-11-19 13:57:19,833 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 13:57:20,170 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 13:57:20,171 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2024-11-19 13:57:20,190 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc0c7cf6/87686a58502c4a9395e2b698733b6ebf/FLAG407713de0 [2024-11-19 13:57:20,424 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc0c7cf6/87686a58502c4a9395e2b698733b6ebf [2024-11-19 13:57:20,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 13:57:20,427 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 13:57:20,428 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 13:57:20,428 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 13:57:20,433 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 13:57:20,433 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:57:20" (1/1) ... [2024-11-19 13:57:20,434 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@726aa5f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:20, skipping insertion in model container [2024-11-19 13:57:20,434 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:57:20" (1/1) ... [2024-11-19 13:57:20,499 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 13:57:21,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:57:21,191 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 13:57:21,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 13:57:21,459 INFO L204 MainTranslator]: Completed translation [2024-11-19 13:57:21,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:21 WrapperNode [2024-11-19 13:57:21,460 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 13:57:21,461 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 13:57:21,461 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 13:57:21,461 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 13:57:21,470 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:21" (1/1) ... [2024-11-19 13:57:21,512 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:21" (1/1) ... [2024-11-19 13:57:21,550 INFO L138 Inliner]: procedures = 525, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 111 [2024-11-19 13:57:21,552 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 13:57:21,553 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 13:57:21,553 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 13:57:21,553 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 13:57:21,563 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:21" (1/1) ... [2024-11-19 13:57:21,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:21" (1/1) ... [2024-11-19 13:57:21,568 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:21" (1/1) ... [2024-11-19 13:57:21,590 INFO L175 MemorySlicer]: Split 13 memory accesses to 9 slices as follows [1, 5, 1, 1, 1, 1, 1, 1, 1]. 38 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [0, 5, 0, 0, 0, 0, 0, 0, 0]. The 8 writes are split as follows [1, 0, 1, 1, 1, 1, 1, 1, 1]. [2024-11-19 13:57:21,591 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:21" (1/1) ... [2024-11-19 13:57:21,591 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:21" (1/1) ... [2024-11-19 13:57:21,607 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:21" (1/1) ... [2024-11-19 13:57:21,615 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:21" (1/1) ... [2024-11-19 13:57:21,621 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:21" (1/1) ... [2024-11-19 13:57:21,623 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:21" (1/1) ... [2024-11-19 13:57:21,632 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 13:57:21,637 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 13:57:21,637 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 13:57:21,637 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 13:57:21,638 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:21" (1/1) ... [2024-11-19 13:57:21,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 13:57:21,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:57:21,677 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) [2024-11-19 13:57:21,683 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 [2024-11-19 13:57:21,735 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2024-11-19 13:57:21,737 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2024-11-19 13:57:21,737 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2024-11-19 13:57:21,737 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2024-11-19 13:57:21,738 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 13:57:21,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 13:57:21,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 13:57:21,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 13:57:21,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 13:57:21,739 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-11-19 13:57:21,739 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 13:57:21,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 13:57:21,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 13:57:21,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 13:57:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 13:57:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-19 13:57:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-19 13:57:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-19 13:57:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-19 13:57:21,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-19 13:57:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 13:57:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 13:57:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 13:57:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 13:57:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-19 13:57:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-19 13:57:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-19 13:57:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-19 13:57:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-19 13:57:21,746 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 13:57:22,065 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 13:57:22,068 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 13:57:22,417 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 13:57:22,417 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 13:57:22,590 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 13:57:22,590 INFO L316 CfgBuilder]: Removed 19 assume(true) statements. [2024-11-19 13:57:22,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:57:22 BoogieIcfgContainer [2024-11-19 13:57:22,591 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 13:57:22,593 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 13:57:22,593 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 13:57:22,597 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 13:57:22,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:57:20" (1/3) ... [2024-11-19 13:57:22,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9c20dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:57:22, skipping insertion in model container [2024-11-19 13:57:22,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:57:21" (2/3) ... [2024-11-19 13:57:22,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a9c20dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:57:22, skipping insertion in model container [2024-11-19 13:57:22,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:57:22" (3/3) ... [2024-11-19 13:57:22,599 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr.i [2024-11-19 13:57:22,615 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 13:57:22,615 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-19 13:57:22,615 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 13:57:22,679 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 13:57:22,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 111 transitions, 236 flow [2024-11-19 13:57:22,763 INFO L124 PetriNetUnfolderBase]: 31/109 cut-off events. [2024-11-19 13:57:22,763 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 13:57:22,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 109 events. 31/109 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 266 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 85. Up to 5 conditions per place. [2024-11-19 13:57:22,768 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 111 transitions, 236 flow [2024-11-19 13:57:22,771 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 98 transitions, 205 flow [2024-11-19 13:57:22,780 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 13:57:22,786 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;@1d0a5406, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 13:57:22,786 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-19 13:57:22,788 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 13:57:22,789 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-19 13:57:22,789 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 13:57:22,789 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:57:22,789 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 13:57:22,790 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 13:57:22,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:57:22,797 INFO L85 PathProgramCache]: Analyzing trace with hash 622803, now seen corresponding path program 1 times [2024-11-19 13:57:22,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:57:22,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101029504] [2024-11-19 13:57:22,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:57:22,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:57:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:57:23,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:23,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:57:23,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101029504] [2024-11-19 13:57:23,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101029504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:57:23,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:57:23,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-19 13:57:23,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840527707] [2024-11-19 13:57:23,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:57:23,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:57:23,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:57:23,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:57:23,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:57:23,270 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-19 13:57:23,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 98 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-11-19 13:57:23,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:57:23,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-19 13:57:23,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:57:23,563 INFO L124 PetriNetUnfolderBase]: 622/1420 cut-off events. [2024-11-19 13:57:23,564 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-19 13:57:23,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2420 conditions, 1420 events. 622/1420 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8776 event pairs, 494 based on Foata normal form. 285/1420 useless extension candidates. Maximal degree in co-relation 2326. Up to 956 conditions per place. [2024-11-19 13:57:23,581 INFO L140 encePairwiseOnDemand]: 93/111 looper letters, 33 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2024-11-19 13:57:23,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 211 flow [2024-11-19 13:57:23,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:57:23,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:57:23,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2024-11-19 13:57:23,596 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5765765765765766 [2024-11-19 13:57:23,598 INFO L175 Difference]: Start difference. First operand has 78 places, 98 transitions, 205 flow. Second operand 3 states and 192 transitions. [2024-11-19 13:57:23,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 211 flow [2024-11-19 13:57:23,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 206 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 13:57:23,607 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 140 flow [2024-11-19 13:57:23,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2024-11-19 13:57:23,617 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2024-11-19 13:57:23,617 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 140 flow [2024-11-19 13:57:23,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-11-19 13:57:23,618 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:57:23,618 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-19 13:57:23,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 13:57:23,618 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 13:57:23,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:57:23,619 INFO L85 PathProgramCache]: Analyzing trace with hash 19307543, now seen corresponding path program 1 times [2024-11-19 13:57:23,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:57:23,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480019540] [2024-11-19 13:57:23,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:57:23,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:57:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:57:23,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:23,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:57:23,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480019540] [2024-11-19 13:57:23,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480019540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:57:23,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:57:23,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:57:23,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873481950] [2024-11-19 13:57:23,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:57:23,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 13:57:23,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:57:23,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 13:57:23,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 13:57:23,710 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2024-11-19 13:57:23,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-11-19 13:57:23,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:57:23,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2024-11-19 13:57:23,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:57:23,870 INFO L124 PetriNetUnfolderBase]: 622/1419 cut-off events. [2024-11-19 13:57:23,870 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-19 13:57:23,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2406 conditions, 1419 events. 622/1419 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8790 event pairs, 494 based on Foata normal form. 0/1135 useless extension candidates. Maximal degree in co-relation 2400. Up to 955 conditions per place. [2024-11-19 13:57:23,880 INFO L140 encePairwiseOnDemand]: 109/111 looper letters, 33 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2024-11-19 13:57:23,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 206 flow [2024-11-19 13:57:23,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 13:57:23,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 13:57:23,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2024-11-19 13:57:23,885 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5195195195195195 [2024-11-19 13:57:23,886 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 140 flow. Second operand 3 states and 173 transitions. [2024-11-19 13:57:23,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 206 flow [2024-11-19 13:57:23,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:57:23,910 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 139 flow [2024-11-19 13:57:23,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-11-19 13:57:23,914 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2024-11-19 13:57:23,914 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 139 flow [2024-11-19 13:57:23,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-11-19 13:57:23,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:57:23,915 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:57:23,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 13:57:23,916 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 13:57:23,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:57:23,918 INFO L85 PathProgramCache]: Analyzing trace with hash -601694660, now seen corresponding path program 1 times [2024-11-19 13:57:23,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:57:23,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998065259] [2024-11-19 13:57:23,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:57:23,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:57:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:57:24,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:24,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:57:24,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998065259] [2024-11-19 13:57:24,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998065259] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:57:24,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:57:24,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 13:57:24,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398163184] [2024-11-19 13:57:24,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:57:24,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:57:24,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:57:24,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:57:24,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:57:24,124 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-19 13:57:24,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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) [2024-11-19 13:57:24,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:57:24,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-19 13:57:24,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:57:24,603 INFO L124 PetriNetUnfolderBase]: 1742/3783 cut-off events. [2024-11-19 13:57:24,603 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-19 13:57:24,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6638 conditions, 3783 events. 1742/3783 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 25815 event pairs, 434 based on Foata normal form. 48/3163 useless extension candidates. Maximal degree in co-relation 6632. Up to 1124 conditions per place. [2024-11-19 13:57:24,628 INFO L140 encePairwiseOnDemand]: 104/111 looper letters, 107 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2024-11-19 13:57:24,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 140 transitions, 517 flow [2024-11-19 13:57:24,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 13:57:24,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 13:57:24,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 342 transitions. [2024-11-19 13:57:24,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6162162162162163 [2024-11-19 13:57:24,632 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 139 flow. Second operand 5 states and 342 transitions. [2024-11-19 13:57:24,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 140 transitions, 517 flow [2024-11-19 13:57:24,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 140 transitions, 516 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:57:24,637 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 172 flow [2024-11-19 13:57:24,638 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=74, PETRI_TRANSITIONS=69} [2024-11-19 13:57:24,639 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -4 predicate places. [2024-11-19 13:57:24,639 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 172 flow [2024-11-19 13:57:24,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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) [2024-11-19 13:57:24,640 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:57:24,640 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:57:24,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 13:57:24,640 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 13:57:24,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:57:24,641 INFO L85 PathProgramCache]: Analyzing trace with hash -202577174, now seen corresponding path program 1 times [2024-11-19 13:57:24,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:57:24,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962178971] [2024-11-19 13:57:24,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:57:24,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:57:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:57:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:24,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:57:24,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962178971] [2024-11-19 13:57:24,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962178971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:57:24,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:57:24,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:57:24,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699475742] [2024-11-19 13:57:24,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:57:24,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:57:24,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:57:24,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:57:24,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:57:24,775 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-19 13:57:24,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 69 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2024-11-19 13:57:24,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:57:24,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-19 13:57:24,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:57:25,696 INFO L124 PetriNetUnfolderBase]: 4174/8942 cut-off events. [2024-11-19 13:57:25,697 INFO L125 PetriNetUnfolderBase]: For 906/1020 co-relation queries the response was YES. [2024-11-19 13:57:25,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16766 conditions, 8942 events. 4174/8942 cut-off events. For 906/1020 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 69570 event pairs, 1530 based on Foata normal form. 73/7865 useless extension candidates. Maximal degree in co-relation 16757. Up to 2752 conditions per place. [2024-11-19 13:57:25,768 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 109 selfloop transitions, 4 changer transitions 0/144 dead transitions. [2024-11-19 13:57:25,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 144 transitions, 590 flow [2024-11-19 13:57:25,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 13:57:25,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 13:57:25,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2024-11-19 13:57:25,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609009009009009 [2024-11-19 13:57:25,770 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 172 flow. Second operand 5 states and 338 transitions. [2024-11-19 13:57:25,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 144 transitions, 590 flow [2024-11-19 13:57:25,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 144 transitions, 590 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:57:25,776 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 196 flow [2024-11-19 13:57:25,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2024-11-19 13:57:25,778 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 1 predicate places. [2024-11-19 13:57:25,778 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 196 flow [2024-11-19 13:57:25,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.25) internal successors, (201), 4 states have internal predecessors, (201), 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) [2024-11-19 13:57:25,779 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:57:25,779 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:57:25,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 13:57:25,779 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 13:57:25,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:57:25,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1592040767, now seen corresponding path program 1 times [2024-11-19 13:57:25,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:57:25,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341027681] [2024-11-19 13:57:25,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:57:25,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:57:25,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:57:25,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:25,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:57:25,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341027681] [2024-11-19 13:57:25,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341027681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:57:25,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:57:25,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:57:25,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997908008] [2024-11-19 13:57:25,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:57:25,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:57:25,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:57:25,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:57:25,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:57:25,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2024-11-19 13:57:25,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2024-11-19 13:57:25,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:57:25,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2024-11-19 13:57:25,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:57:26,887 INFO L124 PetriNetUnfolderBase]: 4603/9884 cut-off events. [2024-11-19 13:57:26,887 INFO L125 PetriNetUnfolderBase]: For 1174/1302 co-relation queries the response was YES. [2024-11-19 13:57:26,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19334 conditions, 9884 events. 4603/9884 cut-off events. For 1174/1302 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 78688 event pairs, 3356 based on Foata normal form. 373/9066 useless extension candidates. Maximal degree in co-relation 19323. Up to 5931 conditions per place. [2024-11-19 13:57:26,956 INFO L140 encePairwiseOnDemand]: 105/111 looper letters, 80 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2024-11-19 13:57:26,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 114 transitions, 486 flow [2024-11-19 13:57:26,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:57:26,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:57:26,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2024-11-19 13:57:26,959 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2024-11-19 13:57:26,960 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 196 flow. Second operand 4 states and 258 transitions. [2024-11-19 13:57:26,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 114 transitions, 486 flow [2024-11-19 13:57:26,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 114 transitions, 486 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 13:57:26,965 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 226 flow [2024-11-19 13:57:26,966 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-11-19 13:57:26,966 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 6 predicate places. [2024-11-19 13:57:26,967 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 226 flow [2024-11-19 13:57:26,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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) [2024-11-19 13:57:26,967 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:57:26,967 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:57:26,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 13:57:26,968 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 13:57:26,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:57:26,969 INFO L85 PathProgramCache]: Analyzing trace with hash -836606757, now seen corresponding path program 1 times [2024-11-19 13:57:26,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:57:26,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644935209] [2024-11-19 13:57:26,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:57:26,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:57:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:57:27,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:27,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:57:27,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644935209] [2024-11-19 13:57:27,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644935209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:57:27,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761999222] [2024-11-19 13:57:27,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:57:27,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:57:27,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:57:27,136 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) [2024-11-19 13:57:27,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 13:57:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:57:27,260 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:57:27,265 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:57:27,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:27,332 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:57:27,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761999222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:57:27,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:57:27,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-19 13:57:27,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785531339] [2024-11-19 13:57:27,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:57:27,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:57:27,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:57:27,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:57:27,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:57:27,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-19 13:57:27,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 226 flow. Second operand has 6 states, 6 states have (on average 47.166666666666664) internal successors, (283), 6 states have internal predecessors, (283), 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) [2024-11-19 13:57:27,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:57:27,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-19 13:57:27,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:57:28,343 INFO L124 PetriNetUnfolderBase]: 4222/9077 cut-off events. [2024-11-19 13:57:28,344 INFO L125 PetriNetUnfolderBase]: For 3450/3646 co-relation queries the response was YES. [2024-11-19 13:57:28,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19053 conditions, 9077 events. 4222/9077 cut-off events. For 3450/3646 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 70911 event pairs, 827 based on Foata normal form. 398/8539 useless extension candidates. Maximal degree in co-relation 19039. Up to 3273 conditions per place. [2024-11-19 13:57:28,404 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 115 selfloop transitions, 4 changer transitions 0/148 dead transitions. [2024-11-19 13:57:28,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 148 transitions, 665 flow [2024-11-19 13:57:28,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:57:28,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:57:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 378 transitions. [2024-11-19 13:57:28,407 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2024-11-19 13:57:28,407 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 226 flow. Second operand 6 states and 378 transitions. [2024-11-19 13:57:28,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 148 transitions, 665 flow [2024-11-19 13:57:28,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 148 transitions, 662 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 13:57:28,420 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 222 flow [2024-11-19 13:57:28,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=222, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2024-11-19 13:57:28,423 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2024-11-19 13:57:28,424 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 222 flow [2024-11-19 13:57:28,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.166666666666664) internal successors, (283), 6 states have internal predecessors, (283), 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) [2024-11-19 13:57:28,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:57:28,424 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:57:28,444 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 13:57:28,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-19 13:57:28,626 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 13:57:28,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:57:28,626 INFO L85 PathProgramCache]: Analyzing trace with hash -165004939, now seen corresponding path program 1 times [2024-11-19 13:57:28,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:57:28,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300908854] [2024-11-19 13:57:28,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:57:28,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:57:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:57:28,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:28,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:57:28,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300908854] [2024-11-19 13:57:28,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300908854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:57:28,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592252100] [2024-11-19 13:57:28,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:57:28,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:57:28,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:57:28,827 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) [2024-11-19 13:57:28,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 13:57:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:57:28,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:57:28,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:57:28,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:28,991 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:57:29,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:29,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592252100] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:57:29,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:57:29,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 13:57:29,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071997977] [2024-11-19 13:57:29,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:57:29,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 13:57:29,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:57:29,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 13:57:29,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 13:57:29,099 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-19 13:57:29,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 222 flow. Second operand has 12 states, 12 states have (on average 48.0) internal successors, (576), 12 states have internal predecessors, (576), 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) [2024-11-19 13:57:29,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:57:29,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-19 13:57:29,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:57:31,117 INFO L124 PetriNetUnfolderBase]: 7378/16223 cut-off events. [2024-11-19 13:57:31,118 INFO L125 PetriNetUnfolderBase]: For 7218/7538 co-relation queries the response was YES. [2024-11-19 13:57:31,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34002 conditions, 16223 events. 7378/16223 cut-off events. For 7218/7538 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 139212 event pairs, 827 based on Foata normal form. 737/15379 useless extension candidates. Maximal degree in co-relation 33987. Up to 2517 conditions per place. [2024-11-19 13:57:31,225 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 250 selfloop transitions, 15 changer transitions 0/294 dead transitions. [2024-11-19 13:57:31,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 294 transitions, 1398 flow [2024-11-19 13:57:31,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 13:57:31,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 13:57:31,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 732 transitions. [2024-11-19 13:57:31,228 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5995085995085995 [2024-11-19 13:57:31,229 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 222 flow. Second operand 11 states and 732 transitions. [2024-11-19 13:57:31,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 294 transitions, 1398 flow [2024-11-19 13:57:31,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 294 transitions, 1391 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 13:57:31,241 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 330 flow [2024-11-19 13:57:31,241 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=330, PETRI_PLACES=98, PETRI_TRANSITIONS=80} [2024-11-19 13:57:31,242 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-11-19 13:57:31,242 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 330 flow [2024-11-19 13:57:31,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 48.0) internal successors, (576), 12 states have internal predecessors, (576), 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) [2024-11-19 13:57:31,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:57:31,243 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:57:31,261 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 13:57:31,447 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,SelfDestructingSolverStorable6 [2024-11-19 13:57:31,449 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 13:57:31,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:57:31,449 INFO L85 PathProgramCache]: Analyzing trace with hash -820185058, now seen corresponding path program 1 times [2024-11-19 13:57:31,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:57:31,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532427809] [2024-11-19 13:57:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:57:31,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:57:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:57:31,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:31,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:57:31,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532427809] [2024-11-19 13:57:31,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532427809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:57:31,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497429707] [2024-11-19 13:57:31,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:57:31,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:57:31,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:57:31,615 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) [2024-11-19 13:57:31,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 13:57:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:57:31,719 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:57:31,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:57:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:31,760 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:57:31,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497429707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:57:31,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:57:31,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 13:57:31,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508392063] [2024-11-19 13:57:31,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:57:31,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:57:31,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:57:31,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:57:31,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:57:31,770 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2024-11-19 13:57:31,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 80 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 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) [2024-11-19 13:57:31,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:57:31,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2024-11-19 13:57:31,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:57:33,407 INFO L124 PetriNetUnfolderBase]: 7861/16447 cut-off events. [2024-11-19 13:57:33,408 INFO L125 PetriNetUnfolderBase]: For 11748/12088 co-relation queries the response was YES. [2024-11-19 13:57:33,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37321 conditions, 16447 events. 7861/16447 cut-off events. For 11748/12088 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 135250 event pairs, 776 based on Foata normal form. 219/14843 useless extension candidates. Maximal degree in co-relation 37300. Up to 7995 conditions per place. [2024-11-19 13:57:33,537 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 126 selfloop transitions, 13 changer transitions 0/167 dead transitions. [2024-11-19 13:57:33,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 167 transitions, 870 flow [2024-11-19 13:57:33,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:57:33,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:57:33,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 387 transitions. [2024-11-19 13:57:33,539 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2024-11-19 13:57:33,539 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 330 flow. Second operand 6 states and 387 transitions. [2024-11-19 13:57:33,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 167 transitions, 870 flow [2024-11-19 13:57:33,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 167 transitions, 836 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-19 13:57:33,585 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 330 flow [2024-11-19 13:57:33,585 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=330, PETRI_PLACES=98, PETRI_TRANSITIONS=80} [2024-11-19 13:57:33,587 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-11-19 13:57:33,588 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 330 flow [2024-11-19 13:57:33,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.5) internal successors, (291), 6 states have internal predecessors, (291), 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) [2024-11-19 13:57:33,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:57:33,589 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:57:33,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 13:57:33,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:57:33,792 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting counter_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 13:57:33,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:57:33,793 INFO L85 PathProgramCache]: Analyzing trace with hash 344067737, now seen corresponding path program 1 times [2024-11-19 13:57:33,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:57:33,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785811053] [2024-11-19 13:57:33,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:57:33,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:57:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:57:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 13:57:33,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:57:33,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785811053] [2024-11-19 13:57:33,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785811053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:57:33,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 13:57:33,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 13:57:33,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679027717] [2024-11-19 13:57:33,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:57:33,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 13:57:33,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:57:33,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 13:57:33,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 13:57:33,877 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2024-11-19 13:57:33,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 80 transitions, 330 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:57:33,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:57:33,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2024-11-19 13:57:33,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:57:35,556 INFO L124 PetriNetUnfolderBase]: 7681/16206 cut-off events. [2024-11-19 13:57:35,556 INFO L125 PetriNetUnfolderBase]: For 13502/13750 co-relation queries the response was YES. [2024-11-19 13:57:35,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36752 conditions, 16206 events. 7681/16206 cut-off events. For 13502/13750 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 136250 event pairs, 4904 based on Foata normal form. 237/14775 useless extension candidates. Maximal degree in co-relation 36732. Up to 8680 conditions per place. [2024-11-19 13:57:35,659 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 76 selfloop transitions, 17 changer transitions 0/121 dead transitions. [2024-11-19 13:57:35,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 121 transitions, 643 flow [2024-11-19 13:57:35,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 13:57:35,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 13:57:35,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 252 transitions. [2024-11-19 13:57:35,661 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2024-11-19 13:57:35,661 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 330 flow. Second operand 4 states and 252 transitions. [2024-11-19 13:57:35,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 121 transitions, 643 flow [2024-11-19 13:57:35,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 121 transitions, 622 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-19 13:57:35,713 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 378 flow [2024-11-19 13:57:35,714 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=378, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2024-11-19 13:57:35,715 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-11-19 13:57:35,715 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 378 flow [2024-11-19 13:57:35,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 13:57:35,715 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:57:35,715 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:57:35,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 13:57:35,716 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 13:57:35,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:57:35,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1747573302, now seen corresponding path program 1 times [2024-11-19 13:57:35,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:57:35,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673173887] [2024-11-19 13:57:35,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:57:35,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:57:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:57:35,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:35,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:57:35,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673173887] [2024-11-19 13:57:35,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673173887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:57:35,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884260174] [2024-11-19 13:57:35,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:57:35,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:57:35,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:57:35,958 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) [2024-11-19 13:57:35,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 13:57:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:57:36,068 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:57:36,070 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:57:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:36,112 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 13:57:36,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884260174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 13:57:36,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 13:57:36,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-19 13:57:36,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584774738] [2024-11-19 13:57:36,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 13:57:36,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 13:57:36,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:57:36,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 13:57:36,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 13:57:36,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-19 13:57:36,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 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) [2024-11-19 13:57:36,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:57:36,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-19 13:57:36,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:57:37,387 INFO L124 PetriNetUnfolderBase]: 7598/15425 cut-off events. [2024-11-19 13:57:37,387 INFO L125 PetriNetUnfolderBase]: For 18333/19087 co-relation queries the response was YES. [2024-11-19 13:57:37,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36150 conditions, 15425 events. 7598/15425 cut-off events. For 18333/19087 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 124516 event pairs, 309 based on Foata normal form. 691/14302 useless extension candidates. Maximal degree in co-relation 36130. Up to 4193 conditions per place. [2024-11-19 13:57:37,475 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 196 selfloop transitions, 4 changer transitions 0/228 dead transitions. [2024-11-19 13:57:37,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 228 transitions, 1666 flow [2024-11-19 13:57:37,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 13:57:37,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 13:57:37,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 398 transitions. [2024-11-19 13:57:37,477 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5975975975975976 [2024-11-19 13:57:37,477 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 378 flow. Second operand 6 states and 398 transitions. [2024-11-19 13:57:37,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 228 transitions, 1666 flow [2024-11-19 13:57:37,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 228 transitions, 1544 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 13:57:37,496 INFO L231 Difference]: Finished difference. Result has 100 places, 82 transitions, 356 flow [2024-11-19 13:57:37,496 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=356, PETRI_PLACES=100, PETRI_TRANSITIONS=82} [2024-11-19 13:57:37,497 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2024-11-19 13:57:37,497 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 82 transitions, 356 flow [2024-11-19 13:57:37,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 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) [2024-11-19 13:57:37,497 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:57:37,498 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:57:37,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 13:57:37,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:57:37,699 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 13:57:37,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:57:37,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1659803202, now seen corresponding path program 1 times [2024-11-19 13:57:37,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:57:37,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151351060] [2024-11-19 13:57:37,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:57:37,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:57:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:57:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:37,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:57:37,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151351060] [2024-11-19 13:57:37,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151351060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:57:37,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229775541] [2024-11-19 13:57:37,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 13:57:37,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:57:37,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:57:37,838 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:57:37,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 13:57:37,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 13:57:37,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 13:57:37,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:57:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:37,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:57:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:38,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229775541] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:57:38,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:57:38,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 13:57:38,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333033563] [2024-11-19 13:57:38,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:57:38,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 13:57:38,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:57:38,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 13:57:38,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-19 13:57:38,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-19 13:57:38,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 82 transitions, 356 flow. Second operand has 12 states, 12 states have (on average 50.25) internal successors, (603), 12 states have internal predecessors, (603), 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) [2024-11-19 13:57:38,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:57:38,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-19 13:57:38,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:57:40,710 INFO L124 PetriNetUnfolderBase]: 12595/25560 cut-off events. [2024-11-19 13:57:40,710 INFO L125 PetriNetUnfolderBase]: For 24344/25608 co-relation queries the response was YES. [2024-11-19 13:57:40,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58657 conditions, 25560 events. 12595/25560 cut-off events. For 24344/25608 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 218053 event pairs, 662 based on Foata normal form. 936/23618 useless extension candidates. Maximal degree in co-relation 58636. Up to 3648 conditions per place. [2024-11-19 13:57:40,824 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 372 selfloop transitions, 11 changer transitions 0/411 dead transitions. [2024-11-19 13:57:40,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 411 transitions, 2924 flow [2024-11-19 13:57:40,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 13:57:40,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 13:57:40,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 733 transitions. [2024-11-19 13:57:40,827 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6003276003276004 [2024-11-19 13:57:40,827 INFO L175 Difference]: Start difference. First operand has 100 places, 82 transitions, 356 flow. Second operand 11 states and 733 transitions. [2024-11-19 13:57:40,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 411 transitions, 2924 flow [2024-11-19 13:57:40,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 411 transitions, 2917 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 13:57:40,862 INFO L231 Difference]: Finished difference. Result has 109 places, 87 transitions, 403 flow [2024-11-19 13:57:40,862 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=403, PETRI_PLACES=109, PETRI_TRANSITIONS=87} [2024-11-19 13:57:40,862 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 31 predicate places. [2024-11-19 13:57:40,863 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 87 transitions, 403 flow [2024-11-19 13:57:40,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.25) internal successors, (603), 12 states have internal predecessors, (603), 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) [2024-11-19 13:57:40,864 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:57:40,864 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:57:40,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 13:57:41,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-19 13:57:41,065 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 13:57:41,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:57:41,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1893276300, now seen corresponding path program 2 times [2024-11-19 13:57:41,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:57:41,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608930854] [2024-11-19 13:57:41,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:57:41,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:57:41,093 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:57:41,094 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:57:41,349 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:41,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:57:41,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608930854] [2024-11-19 13:57:41,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608930854] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:57:41,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099205946] [2024-11-19 13:57:41,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:57:41,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:57:41,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:57:41,354 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:57:41,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 13:57:41,463 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:57:41,463 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:57:41,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 13:57:41,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:57:41,549 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:41,549 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:57:41,734 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:41,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099205946] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:57:41,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:57:41,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-19 13:57:41,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309841882] [2024-11-19 13:57:41,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:57:41,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 13:57:41,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:57:41,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 13:57:41,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-19 13:57:41,782 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-19 13:57:41,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 87 transitions, 403 flow. Second operand has 24 states, 24 states have (on average 47.25) internal successors, (1134), 24 states have internal predecessors, (1134), 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) [2024-11-19 13:57:41,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:57:41,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-19 13:57:41,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:57:48,617 INFO L124 PetriNetUnfolderBase]: 27757/59706 cut-off events. [2024-11-19 13:57:48,617 INFO L125 PetriNetUnfolderBase]: For 97456/97872 co-relation queries the response was YES. [2024-11-19 13:57:48,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139954 conditions, 59706 events. 27757/59706 cut-off events. For 97456/97872 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 577257 event pairs, 1398 based on Foata normal form. 2372/56171 useless extension candidates. Maximal degree in co-relation 139930. Up to 8480 conditions per place. [2024-11-19 13:57:49,016 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 660 selfloop transitions, 43 changer transitions 0/730 dead transitions. [2024-11-19 13:57:49,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 730 transitions, 4500 flow [2024-11-19 13:57:49,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 13:57:49,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-19 13:57:49,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1551 transitions. [2024-11-19 13:57:49,021 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6075205640423031 [2024-11-19 13:57:49,021 INFO L175 Difference]: Start difference. First operand has 109 places, 87 transitions, 403 flow. Second operand 23 states and 1551 transitions. [2024-11-19 13:57:49,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 730 transitions, 4500 flow [2024-11-19 13:57:49,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 730 transitions, 4060 flow, removed 132 selfloop flow, removed 4 redundant places. [2024-11-19 13:57:49,142 INFO L231 Difference]: Finished difference. Result has 139 places, 111 transitions, 739 flow [2024-11-19 13:57:49,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=739, PETRI_PLACES=139, PETRI_TRANSITIONS=111} [2024-11-19 13:57:49,143 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 61 predicate places. [2024-11-19 13:57:49,143 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 111 transitions, 739 flow [2024-11-19 13:57:49,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 47.25) internal successors, (1134), 24 states have internal predecessors, (1134), 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) [2024-11-19 13:57:49,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:57:49,144 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:57:49,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 13:57:49,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:57:49,344 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 13:57:49,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:57:49,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1425773278, now seen corresponding path program 2 times [2024-11-19 13:57:49,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:57:49,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657284238] [2024-11-19 13:57:49,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:57:49,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:57:49,370 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:57:49,370 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:57:49,681 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:49,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:57:49,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657284238] [2024-11-19 13:57:49,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657284238] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:57:49,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735538125] [2024-11-19 13:57:49,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 13:57:49,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:57:49,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:57:49,684 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:57:49,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 13:57:49,796 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 13:57:49,796 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:57:49,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 13:57:49,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:57:49,874 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:49,874 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:57:50,033 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:57:50,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735538125] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:57:50,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:57:50,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-19 13:57:50,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566928242] [2024-11-19 13:57:50,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:57:50,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 13:57:50,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:57:50,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 13:57:50,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-19 13:57:50,058 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-19 13:57:50,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 111 transitions, 739 flow. Second operand has 24 states, 24 states have (on average 50.125) internal successors, (1203), 24 states have internal predecessors, (1203), 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) [2024-11-19 13:57:50,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:57:50,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-19 13:57:50,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 13:58:06,012 INFO L124 PetriNetUnfolderBase]: 62365/125364 cut-off events. [2024-11-19 13:58:06,013 INFO L125 PetriNetUnfolderBase]: For 257892/264112 co-relation queries the response was YES. [2024-11-19 13:58:07,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304871 conditions, 125364 events. 62365/125364 cut-off events. For 257892/264112 co-relation queries the response was YES. Maximal size of possible extension queue 1046. Compared 1229432 event pairs, 1538 based on Foata normal form. 6798/118945 useless extension candidates. Maximal degree in co-relation 304834. Up to 18204 conditions per place. [2024-11-19 13:58:07,624 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 1338 selfloop transitions, 23 changer transitions 0/1389 dead transitions. [2024-11-19 13:58:07,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 1389 transitions, 14369 flow [2024-11-19 13:58:07,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-19 13:58:07,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-19 13:58:07,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1546 transitions. [2024-11-19 13:58:07,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6055620838229534 [2024-11-19 13:58:07,629 INFO L175 Difference]: Start difference. First operand has 139 places, 111 transitions, 739 flow. Second operand 23 states and 1546 transitions. [2024-11-19 13:58:07,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 1389 transitions, 14369 flow [2024-11-19 13:58:07,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 1389 transitions, 11991 flow, removed 264 selfloop flow, removed 10 redundant places. [2024-11-19 13:58:07,940 INFO L231 Difference]: Finished difference. Result has 157 places, 123 transitions, 759 flow [2024-11-19 13:58:07,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=111, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=759, PETRI_PLACES=157, PETRI_TRANSITIONS=123} [2024-11-19 13:58:07,942 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 79 predicate places. [2024-11-19 13:58:07,942 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 123 transitions, 759 flow [2024-11-19 13:58:07,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 50.125) internal successors, (1203), 24 states have internal predecessors, (1203), 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) [2024-11-19 13:58:07,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 13:58:07,943 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 13:58:07,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 13:58:08,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:58:08,144 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2024-11-19 13:58:08,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 13:58:08,145 INFO L85 PathProgramCache]: Analyzing trace with hash -2016821420, now seen corresponding path program 3 times [2024-11-19 13:58:08,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 13:58:08,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691344998] [2024-11-19 13:58:08,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 13:58:08,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 13:58:08,183 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-19 13:58:08,183 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:58:08,758 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:08,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 13:58:08,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691344998] [2024-11-19 13:58:08,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691344998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 13:58:08,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016937168] [2024-11-19 13:58:08,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 13:58:08,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 13:58:08,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 13:58:08,761 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 13:58:08,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 13:58:08,884 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-19 13:58:08,885 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 13:58:08,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 13:58:08,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 13:58:08,998 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:08,998 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 13:58:09,452 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 13:58:09,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016937168] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 13:58:09,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 13:58:09,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 46 [2024-11-19 13:58:09,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470684535] [2024-11-19 13:58:09,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 13:58:09,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-19 13:58:09,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 13:58:09,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-19 13:58:09,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2024-11-19 13:58:09,530 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-19 13:58:09,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 123 transitions, 759 flow. Second operand has 48 states, 48 states have (on average 46.875) internal successors, (2250), 48 states have internal predecessors, (2250), 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) [2024-11-19 13:58:09,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 13:58:09,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-19 13:58:09,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand