./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 c7c6ca5d 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-?-c7c6ca5-m [2024-11-09 15:02:46,743 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 15:02:46,815 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-09 15:02:46,821 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 15:02:46,824 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 15:02:46,856 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 15:02:46,857 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 15:02:46,857 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 15:02:46,858 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 15:02:46,858 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 15:02:46,859 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 15:02:46,859 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 15:02:46,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 15:02:46,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 15:02:46,861 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 15:02:46,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 15:02:46,861 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 15:02:46,862 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 15:02:46,862 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 15:02:46,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 15:02:46,863 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 15:02:46,863 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 15:02:46,863 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 15:02:46,864 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 15:02:46,864 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 15:02:46,864 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-09 15:02:46,865 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 15:02:46,865 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 15:02:46,865 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 15:02:46,866 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 15:02:46,866 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 15:02:46,866 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 15:02:46,866 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 15:02:46,867 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 15:02:46,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:02:46,867 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 15:02:46,868 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 15:02:46,868 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 15:02:46,868 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 15:02:46,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 15:02:46,869 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 15:02:46,869 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 15:02:46,869 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 15:02:46,870 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 15:02:46,870 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e [2024-11-09 15:02:47,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 15:02:47,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 15:02:47,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 15:02:47,185 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 15:02:47,186 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 15:02:47,187 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2024-11-09 15:02:48,603 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 15:02:48,949 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 15:02:48,951 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2024-11-09 15:02:48,985 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/536e03cf3/745aa5649d35415093b4cb97de06359e/FLAG21310b301 [2024-11-09 15:02:48,999 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/536e03cf3/745aa5649d35415093b4cb97de06359e [2024-11-09 15:02:49,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 15:02:49,005 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 15:02:49,008 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 15:02:49,008 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 15:02:49,013 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 15:02:49,014 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:02:49" (1/1) ... [2024-11-09 15:02:49,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b2d92d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:02:49, skipping insertion in model container [2024-11-09 15:02:49,015 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:02:49" (1/1) ... [2024-11-09 15:02:49,077 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 15:02:49,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:02:49,815 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 15:02:49,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 15:02:50,091 INFO L204 MainTranslator]: Completed translation [2024-11-09 15:02:50,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:02:50 WrapperNode [2024-11-09 15:02:50,092 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 15:02:50,093 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 15:02:50,093 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 15:02:50,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 15:02:50,100 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:02:50" (1/1) ... [2024-11-09 15:02:50,130 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:02:50" (1/1) ... [2024-11-09 15:02:50,164 INFO L138 Inliner]: procedures = 525, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 111 [2024-11-09 15:02:50,165 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 15:02:50,165 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 15:02:50,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 15:02:50,166 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 15:02:50,177 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:02:50" (1/1) ... [2024-11-09 15:02:50,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:02:50" (1/1) ... [2024-11-09 15:02:50,183 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:02:50" (1/1) ... [2024-11-09 15:02:50,205 INFO L175 MemorySlicer]: Split 13 memory accesses to 9 slices as follows [5, 1, 1, 1, 1, 1, 1, 1, 1]. 38 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [5, 0, 0, 0, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 1, 1, 1, 1, 1, 1, 1]. [2024-11-09 15:02:50,205 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:02:50" (1/1) ... [2024-11-09 15:02:50,206 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:02:50" (1/1) ... [2024-11-09 15:02:50,217 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:02:50" (1/1) ... [2024-11-09 15:02:50,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:02:50" (1/1) ... [2024-11-09 15:02:50,233 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:02:50" (1/1) ... [2024-11-09 15:02:50,236 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:02:50" (1/1) ... [2024-11-09 15:02:50,243 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 15:02:50,244 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 15:02:50,244 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 15:02:50,244 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 15:02:50,245 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:02:50" (1/1) ... [2024-11-09 15:02:50,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 15:02:50,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:02:50,297 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) [2024-11-09 15:02:50,301 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 [2024-11-09 15:02:50,351 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2024-11-09 15:02:50,351 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2024-11-09 15:02:50,351 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2024-11-09 15:02:50,352 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2024-11-09 15:02:50,352 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 15:02:50,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 15:02:50,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 15:02:50,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 15:02:50,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 15:02:50,352 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2024-11-09 15:02:50,352 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 15:02:50,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 15:02:50,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 15:02:50,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-09 15:02:50,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-09 15:02:50,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-09 15:02:50,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-09 15:02:50,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-09 15:02:50,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-09 15:02:50,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-09 15:02:50,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 15:02:50,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 15:02:50,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-09 15:02:50,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-09 15:02:50,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-09 15:02:50,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-09 15:02:50,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-09 15:02:50,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-09 15:02:50,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-09 15:02:50,358 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 15:02:50,656 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 15:02:50,658 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 15:02:50,976 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 15:02:50,976 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 15:02:51,163 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 15:02:51,164 INFO L316 CfgBuilder]: Removed 19 assume(true) statements. [2024-11-09 15:02:51,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:02:51 BoogieIcfgContainer [2024-11-09 15:02:51,165 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 15:02:51,167 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 15:02:51,167 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 15:02:51,170 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 15:02:51,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:02:49" (1/3) ... [2024-11-09 15:02:51,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c3d133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:02:51, skipping insertion in model container [2024-11-09 15:02:51,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:02:50" (2/3) ... [2024-11-09 15:02:51,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c3d133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:02:51, skipping insertion in model container [2024-11-09 15:02:51,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:02:51" (3/3) ... [2024-11-09 15:02:51,175 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr.i [2024-11-09 15:02:51,192 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 15:02:51,192 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-09 15:02:51,192 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 15:02:51,259 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-09 15:02:51,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 111 transitions, 236 flow [2024-11-09 15:02:51,334 INFO L124 PetriNetUnfolderBase]: 31/109 cut-off events. [2024-11-09 15:02:51,335 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-09 15:02:51,340 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. [2024-11-09 15:02:51,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 111 transitions, 236 flow [2024-11-09 15:02:51,345 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 98 transitions, 205 flow [2024-11-09 15:02:51,353 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 15:02:51,358 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;@5962a0d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 15:02:51,359 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-09 15:02:51,361 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 15:02:51,361 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-09 15:02:51,361 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-09 15:02:51,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:02:51,364 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-09 15:02:51,365 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)] === [2024-11-09 15:02:51,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:02:51,369 INFO L85 PathProgramCache]: Analyzing trace with hash 622803, now seen corresponding path program 1 times [2024-11-09 15:02:51,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:02:51,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517888555] [2024-11-09 15:02:51,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:02:51,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:02:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:02:51,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:02:51,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:02:51,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517888555] [2024-11-09 15:02:51,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517888555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:02:51,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:02:51,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 15:02:51,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335465420] [2024-11-09 15:02:51,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:02:51,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:02:51,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:02:51,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:02:51,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:02:51,918 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-09 15:02:51,921 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) [2024-11-09 15:02:51,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:02:51,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-09 15:02:51,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:02:52,191 INFO L124 PetriNetUnfolderBase]: 622/1420 cut-off events. [2024-11-09 15:02:52,191 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-09 15:02:52,198 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. [2024-11-09 15:02:52,206 INFO L140 encePairwiseOnDemand]: 93/111 looper letters, 33 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2024-11-09 15:02:52,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 211 flow [2024-11-09 15:02:52,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:02:52,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:02:52,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 192 transitions. [2024-11-09 15:02:52,219 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5765765765765766 [2024-11-09 15:02:52,221 INFO L175 Difference]: Start difference. First operand has 78 places, 98 transitions, 205 flow. Second operand 3 states and 192 transitions. [2024-11-09 15:02:52,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 211 flow [2024-11-09 15:02:52,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 206 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-09 15:02:52,229 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 140 flow [2024-11-09 15:02:52,233 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} [2024-11-09 15:02:52,236 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2024-11-09 15:02:52,237 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 140 flow [2024-11-09 15:02:52,238 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) [2024-11-09 15:02:52,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:02:52,238 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-09 15:02:52,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 15:02:52,239 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)] === [2024-11-09 15:02:52,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:02:52,240 INFO L85 PathProgramCache]: Analyzing trace with hash 19307543, now seen corresponding path program 1 times [2024-11-09 15:02:52,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:02:52,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953928068] [2024-11-09 15:02:52,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:02:52,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:02:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:02:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:02:52,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:02:52,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953928068] [2024-11-09 15:02:52,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953928068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:02:52,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:02:52,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:02:52,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88750623] [2024-11-09 15:02:52,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:02:52,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 15:02:52,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:02:52,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 15:02:52,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 15:02:52,331 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2024-11-09 15:02:52,331 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) [2024-11-09 15:02:52,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:02:52,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2024-11-09 15:02:52,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:02:52,532 INFO L124 PetriNetUnfolderBase]: 622/1419 cut-off events. [2024-11-09 15:02:52,532 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-09 15:02:52,535 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. [2024-11-09 15:02:52,541 INFO L140 encePairwiseOnDemand]: 109/111 looper letters, 33 selfloop transitions, 1 changer transitions 0/66 dead transitions. [2024-11-09 15:02:52,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 66 transitions, 206 flow [2024-11-09 15:02:52,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 15:02:52,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 15:02:52,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2024-11-09 15:02:52,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5195195195195195 [2024-11-09 15:02:52,547 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 140 flow. Second operand 3 states and 173 transitions. [2024-11-09 15:02:52,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 66 transitions, 206 flow [2024-11-09 15:02:52,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:02:52,551 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 139 flow [2024-11-09 15:02:52,552 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} [2024-11-09 15:02:52,553 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -9 predicate places. [2024-11-09 15:02:52,555 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 139 flow [2024-11-09 15:02:52,555 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) [2024-11-09 15:02:52,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:02:52,555 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:02:52,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 15:02:52,556 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)] === [2024-11-09 15:02:52,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:02:52,557 INFO L85 PathProgramCache]: Analyzing trace with hash -601694660, now seen corresponding path program 1 times [2024-11-09 15:02:52,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:02:52,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821950620] [2024-11-09 15:02:52,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:02:52,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:02:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:02:52,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:02:52,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:02:52,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821950620] [2024-11-09 15:02:52,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821950620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:02:52,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:02:52,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 15:02:52,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990377562] [2024-11-09 15:02:52,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:02:52,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:02:52,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:02:52,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:02:52,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:02:52,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-09 15:02:52,803 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) [2024-11-09 15:02:52,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:02:52,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-09 15:02:52,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:02:53,275 INFO L124 PetriNetUnfolderBase]: 1742/3783 cut-off events. [2024-11-09 15:02:53,276 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-09 15:02:53,283 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. [2024-11-09 15:02:53,298 INFO L140 encePairwiseOnDemand]: 104/111 looper letters, 107 selfloop transitions, 4 changer transitions 0/140 dead transitions. [2024-11-09 15:02:53,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 140 transitions, 517 flow [2024-11-09 15:02:53,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:02:53,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:02:53,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 342 transitions. [2024-11-09 15:02:53,302 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6162162162162163 [2024-11-09 15:02:53,302 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 139 flow. Second operand 5 states and 342 transitions. [2024-11-09 15:02:53,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 140 transitions, 517 flow [2024-11-09 15:02:53,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 140 transitions, 516 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:02:53,305 INFO L231 Difference]: Finished difference. Result has 74 places, 69 transitions, 172 flow [2024-11-09 15:02:53,306 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} [2024-11-09 15:02:53,306 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, -4 predicate places. [2024-11-09 15:02:53,306 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 69 transitions, 172 flow [2024-11-09 15:02:53,307 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) [2024-11-09 15:02:53,307 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:02:53,307 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:02:53,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 15:02:53,308 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)] === [2024-11-09 15:02:53,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:02:53,309 INFO L85 PathProgramCache]: Analyzing trace with hash -202577174, now seen corresponding path program 1 times [2024-11-09 15:02:53,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:02:53,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184924278] [2024-11-09 15:02:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:02:53,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:02:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:02:53,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:02:53,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:02:53,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184924278] [2024-11-09 15:02:53,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184924278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:02:53,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:02:53,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:02:53,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737637663] [2024-11-09 15:02:53,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:02:53,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:02:53,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:02:53,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:02:53,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:02:53,448 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-09 15:02:53,448 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) [2024-11-09 15:02:53,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:02:53,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-09 15:02:53,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:02:54,324 INFO L124 PetriNetUnfolderBase]: 4174/8942 cut-off events. [2024-11-09 15:02:54,324 INFO L125 PetriNetUnfolderBase]: For 906/1020 co-relation queries the response was YES. [2024-11-09 15:02:54,345 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. [2024-11-09 15:02:54,384 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 109 selfloop transitions, 4 changer transitions 0/144 dead transitions. [2024-11-09 15:02:54,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 144 transitions, 590 flow [2024-11-09 15:02:54,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 15:02:54,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 15:02:54,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 338 transitions. [2024-11-09 15:02:54,386 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.609009009009009 [2024-11-09 15:02:54,386 INFO L175 Difference]: Start difference. First operand has 74 places, 69 transitions, 172 flow. Second operand 5 states and 338 transitions. [2024-11-09 15:02:54,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 144 transitions, 590 flow [2024-11-09 15:02:54,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 144 transitions, 590 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:02:54,394 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 196 flow [2024-11-09 15:02:54,394 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} [2024-11-09 15:02:54,395 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 1 predicate places. [2024-11-09 15:02:54,396 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 196 flow [2024-11-09 15:02:54,396 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) [2024-11-09 15:02:54,397 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:02:54,397 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:02:54,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 15:02:54,397 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)] === [2024-11-09 15:02:54,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:02:54,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1592040767, now seen corresponding path program 1 times [2024-11-09 15:02:54,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:02:54,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476092406] [2024-11-09 15:02:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:02:54,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:02:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:02:54,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:02:54,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:02:54,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476092406] [2024-11-09 15:02:54,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476092406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:02:54,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:02:54,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:02:54,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849425287] [2024-11-09 15:02:54,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:02:54,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:02:54,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:02:54,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:02:54,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:02:54,514 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2024-11-09 15:02:54,514 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) [2024-11-09 15:02:54,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:02:54,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2024-11-09 15:02:54,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:02:55,807 INFO L124 PetriNetUnfolderBase]: 4603/9884 cut-off events. [2024-11-09 15:02:55,807 INFO L125 PetriNetUnfolderBase]: For 1174/1302 co-relation queries the response was YES. [2024-11-09 15:02:55,828 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. [2024-11-09 15:02:55,863 INFO L140 encePairwiseOnDemand]: 105/111 looper letters, 80 selfloop transitions, 4 changer transitions 0/114 dead transitions. [2024-11-09 15:02:55,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 114 transitions, 486 flow [2024-11-09 15:02:55,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:02:55,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:02:55,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2024-11-09 15:02:55,865 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2024-11-09 15:02:55,865 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 196 flow. Second operand 4 states and 258 transitions. [2024-11-09 15:02:55,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 114 transitions, 486 flow [2024-11-09 15:02:55,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 114 transitions, 486 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-09 15:02:55,873 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 226 flow [2024-11-09 15:02:55,874 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} [2024-11-09 15:02:55,875 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 6 predicate places. [2024-11-09 15:02:55,878 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 226 flow [2024-11-09 15:02:55,878 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) [2024-11-09 15:02:55,878 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:02:55,879 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:02:55,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 15:02:55,879 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)] === [2024-11-09 15:02:55,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:02:55,879 INFO L85 PathProgramCache]: Analyzing trace with hash -836606757, now seen corresponding path program 1 times [2024-11-09 15:02:55,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:02:55,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447134901] [2024-11-09 15:02:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:02:55,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:02:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:02:56,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:02:56,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:02:56,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447134901] [2024-11-09 15:02:56,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447134901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:02:56,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357042598] [2024-11-09 15:02:56,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:02:56,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:02:56,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:02:56,033 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) [2024-11-09 15:02:56,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 15:02:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:02:56,152 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:02:56,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:02:56,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:02:56,221 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:02:56,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357042598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:02:56,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:02:56,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-09 15:02:56,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010002892] [2024-11-09 15:02:56,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:02:56,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:02:56,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:02:56,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:02:56,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:02:56,239 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-09 15:02:56,239 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) [2024-11-09 15:02:56,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:02:56,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-09 15:02:56,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:02:57,277 INFO L124 PetriNetUnfolderBase]: 4222/9077 cut-off events. [2024-11-09 15:02:57,277 INFO L125 PetriNetUnfolderBase]: For 3450/3646 co-relation queries the response was YES. [2024-11-09 15:02:57,300 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. [2024-11-09 15:02:57,335 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 115 selfloop transitions, 4 changer transitions 0/148 dead transitions. [2024-11-09 15:02:57,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 148 transitions, 665 flow [2024-11-09 15:02:57,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:02:57,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:02:57,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 378 transitions. [2024-11-09 15:02:57,338 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2024-11-09 15:02:57,338 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 226 flow. Second operand 6 states and 378 transitions. [2024-11-09 15:02:57,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 148 transitions, 665 flow [2024-11-09 15:02:57,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 148 transitions, 662 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 15:02:57,352 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 222 flow [2024-11-09 15:02:57,353 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} [2024-11-09 15:02:57,354 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2024-11-09 15:02:57,355 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 222 flow [2024-11-09 15:02:57,355 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) [2024-11-09 15:02:57,355 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:02:57,355 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:02:57,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 15:02:57,556 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 [2024-11-09 15:02:57,557 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)] === [2024-11-09 15:02:57,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:02:57,557 INFO L85 PathProgramCache]: Analyzing trace with hash -165004939, now seen corresponding path program 1 times [2024-11-09 15:02:57,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:02:57,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514227300] [2024-11-09 15:02:57,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:02:57,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:02:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:02:57,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:02:57,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:02:57,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514227300] [2024-11-09 15:02:57,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514227300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:02:57,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774358164] [2024-11-09 15:02:57,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:02:57,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:02:57,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:02:57,723 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) [2024-11-09 15:02:57,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 15:02:57,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:02:57,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:02:57,847 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:02:57,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:02:57,905 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:02:57,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:02:57,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774358164] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:02:57,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:02:57,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-09 15:02:57,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97886978] [2024-11-09 15:02:57,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:02:57,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:02:57,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:02:57,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:02:57,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:02:58,013 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-09 15:02:58,014 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) [2024-11-09 15:02:58,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:02:58,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-09 15:02:58,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:02:59,955 INFO L124 PetriNetUnfolderBase]: 7378/16223 cut-off events. [2024-11-09 15:02:59,955 INFO L125 PetriNetUnfolderBase]: For 7218/7538 co-relation queries the response was YES. [2024-11-09 15:03:00,008 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. [2024-11-09 15:03:00,066 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 250 selfloop transitions, 15 changer transitions 0/294 dead transitions. [2024-11-09 15:03:00,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 294 transitions, 1398 flow [2024-11-09 15:03:00,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 15:03:00,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 15:03:00,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 732 transitions. [2024-11-09 15:03:00,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5995085995085995 [2024-11-09 15:03:00,069 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 222 flow. Second operand 11 states and 732 transitions. [2024-11-09 15:03:00,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 294 transitions, 1398 flow [2024-11-09 15:03:00,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 294 transitions, 1391 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 15:03:00,081 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 330 flow [2024-11-09 15:03:00,081 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} [2024-11-09 15:03:00,082 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-11-09 15:03:00,082 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 330 flow [2024-11-09 15:03:00,082 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) [2024-11-09 15:03:00,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:00,083 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:03:00,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 15:03:00,283 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 [2024-11-09 15:03:00,284 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)] === [2024-11-09 15:03:00,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:00,285 INFO L85 PathProgramCache]: Analyzing trace with hash -820185058, now seen corresponding path program 1 times [2024-11-09 15:03:00,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:00,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789072335] [2024-11-09 15:03:00,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:00,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:00,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:00,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:00,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789072335] [2024-11-09 15:03:00,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789072335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:03:00,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426879574] [2024-11-09 15:03:00,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:00,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:00,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:03:00,382 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) [2024-11-09 15:03:00,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 15:03:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:00,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:03:00,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:03:00,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:00,529 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:03:00,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426879574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:03:00,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:03:00,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-09 15:03:00,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203726561] [2024-11-09 15:03:00,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:03:00,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:03:00,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:00,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:03:00,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:03:00,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2024-11-09 15:03:00,539 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) [2024-11-09 15:03:00,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:00,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2024-11-09 15:03:00,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:02,246 INFO L124 PetriNetUnfolderBase]: 7861/16447 cut-off events. [2024-11-09 15:03:02,247 INFO L125 PetriNetUnfolderBase]: For 11748/12088 co-relation queries the response was YES. [2024-11-09 15:03:02,290 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. [2024-11-09 15:03:02,357 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 126 selfloop transitions, 13 changer transitions 0/167 dead transitions. [2024-11-09 15:03:02,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 167 transitions, 870 flow [2024-11-09 15:03:02,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:03:02,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:03:02,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 387 transitions. [2024-11-09 15:03:02,359 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2024-11-09 15:03:02,359 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 330 flow. Second operand 6 states and 387 transitions. [2024-11-09 15:03:02,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 167 transitions, 870 flow [2024-11-09 15:03:02,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 167 transitions, 836 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-11-09 15:03:02,415 INFO L231 Difference]: Finished difference. Result has 98 places, 80 transitions, 330 flow [2024-11-09 15:03:02,415 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} [2024-11-09 15:03:02,416 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-11-09 15:03:02,417 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 80 transitions, 330 flow [2024-11-09 15:03:02,418 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) [2024-11-09 15:03:02,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:02,418 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:03:02,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-09 15:03:02,622 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 [2024-11-09 15:03:02,623 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)] === [2024-11-09 15:03:02,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:02,624 INFO L85 PathProgramCache]: Analyzing trace with hash 344067737, now seen corresponding path program 1 times [2024-11-09 15:03:02,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:02,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519843932] [2024-11-09 15:03:02,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:02,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 15:03:02,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:02,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519843932] [2024-11-09 15:03:02,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519843932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:03:02,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 15:03:02,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 15:03:02,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644429577] [2024-11-09 15:03:02,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:03:02,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 15:03:02,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:02,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 15:03:02,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 15:03:02,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 111 [2024-11-09 15:03:02,720 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) [2024-11-09 15:03:02,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:02,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 111 [2024-11-09 15:03:02,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:04,102 INFO L124 PetriNetUnfolderBase]: 7681/16206 cut-off events. [2024-11-09 15:03:04,102 INFO L125 PetriNetUnfolderBase]: For 13502/13750 co-relation queries the response was YES. [2024-11-09 15:03:04,158 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. [2024-11-09 15:03:04,207 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 76 selfloop transitions, 17 changer transitions 0/121 dead transitions. [2024-11-09 15:03:04,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 121 transitions, 643 flow [2024-11-09 15:03:04,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 15:03:04,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-09 15:03:04,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 252 transitions. [2024-11-09 15:03:04,209 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2024-11-09 15:03:04,209 INFO L175 Difference]: Start difference. First operand has 98 places, 80 transitions, 330 flow. Second operand 4 states and 252 transitions. [2024-11-09 15:03:04,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 121 transitions, 643 flow [2024-11-09 15:03:04,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 121 transitions, 622 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-09 15:03:04,413 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 378 flow [2024-11-09 15:03:04,414 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} [2024-11-09 15:03:04,415 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 20 predicate places. [2024-11-09 15:03:04,415 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 378 flow [2024-11-09 15:03:04,415 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) [2024-11-09 15:03:04,415 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:04,416 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:03:04,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 15:03:04,416 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)] === [2024-11-09 15:03:04,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:04,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1747573302, now seen corresponding path program 1 times [2024-11-09 15:03:04,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:04,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477365596] [2024-11-09 15:03:04,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:04,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:04,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:04,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:04,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477365596] [2024-11-09 15:03:04,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477365596] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:03:04,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620001925] [2024-11-09 15:03:04,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:04,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:04,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:03:04,510 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) [2024-11-09 15:03:04,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 15:03:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:04,616 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:03:04,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:03:04,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:04,662 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 15:03:04,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620001925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 15:03:04,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 15:03:04,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-09 15:03:04,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997707876] [2024-11-09 15:03:04,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 15:03:04,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 15:03:04,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:04,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 15:03:04,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-09 15:03:04,672 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-09 15:03:04,673 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) [2024-11-09 15:03:04,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:04,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-09 15:03:04,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:06,017 INFO L124 PetriNetUnfolderBase]: 7598/15425 cut-off events. [2024-11-09 15:03:06,017 INFO L125 PetriNetUnfolderBase]: For 18333/19087 co-relation queries the response was YES. [2024-11-09 15:03:06,046 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. [2024-11-09 15:03:06,094 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 196 selfloop transitions, 4 changer transitions 0/228 dead transitions. [2024-11-09 15:03:06,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 228 transitions, 1666 flow [2024-11-09 15:03:06,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 15:03:06,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-09 15:03:06,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 398 transitions. [2024-11-09 15:03:06,096 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5975975975975976 [2024-11-09 15:03:06,096 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 378 flow. Second operand 6 states and 398 transitions. [2024-11-09 15:03:06,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 228 transitions, 1666 flow [2024-11-09 15:03:06,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 228 transitions, 1544 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 15:03:06,115 INFO L231 Difference]: Finished difference. Result has 100 places, 82 transitions, 356 flow [2024-11-09 15:03:06,116 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} [2024-11-09 15:03:06,116 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 22 predicate places. [2024-11-09 15:03:06,117 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 82 transitions, 356 flow [2024-11-09 15:03:06,117 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) [2024-11-09 15:03:06,117 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:06,117 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:03:06,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 15:03:06,318 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 [2024-11-09 15:03:06,318 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)] === [2024-11-09 15:03:06,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:06,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1659803202, now seen corresponding path program 1 times [2024-11-09 15:03:06,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:06,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045169923] [2024-11-09 15:03:06,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:06,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:06,420 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:06,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:06,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045169923] [2024-11-09 15:03:06,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045169923] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:03:06,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170265548] [2024-11-09 15:03:06,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:06,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:06,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:03:06,425 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) [2024-11-09 15:03:06,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 15:03:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:06,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 15:03:06,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:03:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:06,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:03:06,623 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:06,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170265548] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:03:06,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:03:06,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-09 15:03:06,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860340894] [2024-11-09 15:03:06,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:03:06,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 15:03:06,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:06,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 15:03:06,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-09 15:03:06,640 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-09 15:03:06,642 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) [2024-11-09 15:03:06,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:06,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-09 15:03:06,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:09,169 INFO L124 PetriNetUnfolderBase]: 12595/25560 cut-off events. [2024-11-09 15:03:09,169 INFO L125 PetriNetUnfolderBase]: For 24344/25608 co-relation queries the response was YES. [2024-11-09 15:03:09,239 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. [2024-11-09 15:03:09,314 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 372 selfloop transitions, 11 changer transitions 0/411 dead transitions. [2024-11-09 15:03:09,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 411 transitions, 2924 flow [2024-11-09 15:03:09,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 15:03:09,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-09 15:03:09,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 733 transitions. [2024-11-09 15:03:09,317 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6003276003276004 [2024-11-09 15:03:09,317 INFO L175 Difference]: Start difference. First operand has 100 places, 82 transitions, 356 flow. Second operand 11 states and 733 transitions. [2024-11-09 15:03:09,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 411 transitions, 2924 flow [2024-11-09 15:03:09,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 411 transitions, 2917 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-09 15:03:09,346 INFO L231 Difference]: Finished difference. Result has 109 places, 87 transitions, 403 flow [2024-11-09 15:03:09,347 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} [2024-11-09 15:03:09,347 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 31 predicate places. [2024-11-09 15:03:09,348 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 87 transitions, 403 flow [2024-11-09 15:03:09,348 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) [2024-11-09 15:03:09,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:09,348 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:03:09,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 15:03:09,549 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 [2024-11-09 15:03:09,549 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)] === [2024-11-09 15:03:09,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:09,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1893276300, now seen corresponding path program 2 times [2024-11-09 15:03:09,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:09,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265094780] [2024-11-09 15:03:09,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:09,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:09,765 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:09,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:09,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265094780] [2024-11-09 15:03:09,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265094780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:03:09,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128998518] [2024-11-09 15:03:09,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:03:09,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:09,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:03:09,769 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) [2024-11-09 15:03:09,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 15:03:09,875 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 15:03:09,875 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:03:09,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 15:03:09,877 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:03:09,949 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:09,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:03:10,139 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:10,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128998518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:03:10,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:03:10,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-09 15:03:10,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170479223] [2024-11-09 15:03:10,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:03:10,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 15:03:10,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:10,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 15:03:10,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-09 15:03:10,187 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-09 15:03:10,189 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) [2024-11-09 15:03:10,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:10,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-09 15:03:10,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:17,095 INFO L124 PetriNetUnfolderBase]: 27757/59706 cut-off events. [2024-11-09 15:03:17,095 INFO L125 PetriNetUnfolderBase]: For 97456/97872 co-relation queries the response was YES. [2024-11-09 15:03:17,311 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. [2024-11-09 15:03:17,459 INFO L140 encePairwiseOnDemand]: 106/111 looper letters, 660 selfloop transitions, 43 changer transitions 0/730 dead transitions. [2024-11-09 15:03:17,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 730 transitions, 4500 flow [2024-11-09 15:03:17,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 15:03:17,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-09 15:03:17,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1551 transitions. [2024-11-09 15:03:17,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6075205640423031 [2024-11-09 15:03:17,464 INFO L175 Difference]: Start difference. First operand has 109 places, 87 transitions, 403 flow. Second operand 23 states and 1551 transitions. [2024-11-09 15:03:17,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 730 transitions, 4500 flow [2024-11-09 15:03:17,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 730 transitions, 4060 flow, removed 132 selfloop flow, removed 4 redundant places. [2024-11-09 15:03:17,558 INFO L231 Difference]: Finished difference. Result has 139 places, 111 transitions, 739 flow [2024-11-09 15:03:17,558 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} [2024-11-09 15:03:17,559 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 61 predicate places. [2024-11-09 15:03:17,559 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 111 transitions, 739 flow [2024-11-09 15:03:17,560 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) [2024-11-09 15:03:17,560 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:17,560 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:03:17,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 15:03:17,761 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 [2024-11-09 15:03:17,761 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)] === [2024-11-09 15:03:17,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:17,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1425773278, now seen corresponding path program 2 times [2024-11-09 15:03:17,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:17,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755156465] [2024-11-09 15:03:17,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:17,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:18,071 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:18,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:18,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755156465] [2024-11-09 15:03:18,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755156465] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:03:18,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741191313] [2024-11-09 15:03:18,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 15:03:18,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:18,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:03:18,074 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) [2024-11-09 15:03:18,075 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 15:03:18,189 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 15:03:18,190 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:03:18,191 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 15:03:18,193 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:03:18,267 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:18,268 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:03:18,413 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:18,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741191313] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:03:18,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:03:18,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-11-09 15:03:18,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314834618] [2024-11-09 15:03:18,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:03:18,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-09 15:03:18,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:18,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-09 15:03:18,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-11-09 15:03:18,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 111 [2024-11-09 15:03:18,441 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) [2024-11-09 15:03:18,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:18,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 111 [2024-11-09 15:03:18,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 15:03:34,737 INFO L124 PetriNetUnfolderBase]: 62365/125364 cut-off events. [2024-11-09 15:03:34,737 INFO L125 PetriNetUnfolderBase]: For 257892/264112 co-relation queries the response was YES. [2024-11-09 15:03:35,651 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. [2024-11-09 15:03:36,410 INFO L140 encePairwiseOnDemand]: 107/111 looper letters, 1338 selfloop transitions, 23 changer transitions 0/1389 dead transitions. [2024-11-09 15:03:36,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 1389 transitions, 14369 flow [2024-11-09 15:03:36,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-09 15:03:36,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-09 15:03:36,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1546 transitions. [2024-11-09 15:03:36,419 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6055620838229534 [2024-11-09 15:03:36,419 INFO L175 Difference]: Start difference. First operand has 139 places, 111 transitions, 739 flow. Second operand 23 states and 1546 transitions. [2024-11-09 15:03:36,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 1389 transitions, 14369 flow [2024-11-09 15:03:36,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 1389 transitions, 11991 flow, removed 264 selfloop flow, removed 10 redundant places. [2024-11-09 15:03:36,742 INFO L231 Difference]: Finished difference. Result has 157 places, 123 transitions, 759 flow [2024-11-09 15:03:36,742 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} [2024-11-09 15:03:36,743 INFO L277 CegarLoopForPetriNet]: 78 programPoint places, 79 predicate places. [2024-11-09 15:03:36,743 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 123 transitions, 759 flow [2024-11-09 15:03:36,743 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) [2024-11-09 15:03:36,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 15:03:36,743 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 15:03:36,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-09 15:03:36,944 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 [2024-11-09 15:03:36,944 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)] === [2024-11-09 15:03:36,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 15:03:36,944 INFO L85 PathProgramCache]: Analyzing trace with hash -2016821420, now seen corresponding path program 3 times [2024-11-09 15:03:36,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 15:03:36,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260761342] [2024-11-09 15:03:36,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 15:03:36,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 15:03:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 15:03:37,433 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:37,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 15:03:37,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260761342] [2024-11-09 15:03:37,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260761342] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 15:03:37,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003178475] [2024-11-09 15:03:37,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 15:03:37,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 15:03:37,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 15:03:37,435 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) [2024-11-09 15:03:37,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 15:03:37,548 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-09 15:03:37,548 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 15:03:37,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-09 15:03:37,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 15:03:37,660 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:37,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 15:03:38,127 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 15:03:38,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003178475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 15:03:38,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 15:03:38,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 46 [2024-11-09 15:03:38,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64259744] [2024-11-09 15:03:38,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 15:03:38,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-09 15:03:38,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 15:03:38,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-09 15:03:38,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2024-11-09 15:03:38,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 111 [2024-11-09 15:03:38,203 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) [2024-11-09 15:03:38,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 15:03:38,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 111 [2024-11-09 15:03:38,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand