./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1 --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 8dbd267b0e0821e8d358e8d234024d8e484ea32431972ed8b70b87052179a50c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:23:21,286 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:23:21,343 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-02 10:23:21,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:23:21,348 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:23:21,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:23:21,370 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:23:21,371 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:23:21,371 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:23:21,371 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:23:21,371 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:23:21,371 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:23:21,371 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:23:21,372 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:23:21,372 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:23:21,372 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:23:21,372 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 10:23:21,372 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 10:23:21,372 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:23:21,372 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 10:23:21,372 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:23:21,372 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 10:23:21,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:23:21,372 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 10:23:21,373 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 10:23:21,373 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 10:23:21,373 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 10:23:21,373 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:23:21,373 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:23:21,373 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:23:21,373 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:23:21,373 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:23:21,373 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:23:21,373 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:23:21,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:23:21,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:23:21,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:23:21,374 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:23:21,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:23:21,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:23:21,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:23:21,374 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:23:21,374 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 10:23:21,374 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 10:23:21,374 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:23:21,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:23:21,375 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:23:21,375 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:23:21,375 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:23:21,375 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:23:21,375 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1 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 -> 8dbd267b0e0821e8d358e8d234024d8e484ea32431972ed8b70b87052179a50c [2024-12-02 10:23:21,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:23:21,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:23:21,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:23:21,612 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:23:21,613 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:23:21,614 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2024-12-02 10:23:24,241 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/data/dc62c32a0/3d5ff03596414bfa883c306d24b39059/FLAGd2f6a6ebd [2024-12-02 10:23:24,439 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:23:24,439 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/sv-benchmarks/c/weaver/popl20-more-buffer-series.wvr.c [2024-12-02 10:23:24,446 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/data/dc62c32a0/3d5ff03596414bfa883c306d24b39059/FLAGd2f6a6ebd [2024-12-02 10:23:24,811 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/data/dc62c32a0/3d5ff03596414bfa883c306d24b39059 [2024-12-02 10:23:24,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:23:24,814 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:23:24,815 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:23:24,815 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:23:24,818 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:23:24,818 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:23:24" (1/1) ... [2024-12-02 10:23:24,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ddde325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:23:24, skipping insertion in model container [2024-12-02 10:23:24,819 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:23:24" (1/1) ... [2024-12-02 10:23:24,832 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:23:24,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:23:24,983 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:23:25,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:23:25,024 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:23:25,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:23:25 WrapperNode [2024-12-02 10:23:25,024 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:23:25,025 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:23:25,025 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:23:25,025 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:23:25,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:23:25" (1/1) ... [2024-12-02 10:23:25,037 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:23:25" (1/1) ... [2024-12-02 10:23:25,064 INFO L138 Inliner]: procedures = 26, calls = 68, calls flagged for inlining = 23, calls inlined = 29, statements flattened = 383 [2024-12-02 10:23:25,064 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:23:25,064 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:23:25,065 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:23:25,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:23:25,073 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:23:25" (1/1) ... [2024-12-02 10:23:25,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:23:25" (1/1) ... [2024-12-02 10:23:25,076 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:23:25" (1/1) ... [2024-12-02 10:23:25,093 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-12-02 10:23:25,094 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:23:25" (1/1) ... [2024-12-02 10:23:25,094 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:23:25" (1/1) ... [2024-12-02 10:23:25,104 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:23:25" (1/1) ... [2024-12-02 10:23:25,105 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:23:25" (1/1) ... [2024-12-02 10:23:25,110 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:23:25" (1/1) ... [2024-12-02 10:23:25,111 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:23:25" (1/1) ... [2024-12-02 10:23:25,113 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:23:25" (1/1) ... [2024-12-02 10:23:25,116 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:23:25,117 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:23:25,117 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:23:25,117 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:23:25,118 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:23:25" (1/1) ... [2024-12-02 10:23:25,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:23:25,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:23:25,145 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:23:25,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:23:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:23:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 10:23:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 10:23:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 10:23:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 10:23:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 10:23:25,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 10:23:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 10:23:25,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 10:23:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-12-02 10:23:25,168 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-12-02 10:23:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-12-02 10:23:25,169 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-12-02 10:23:25,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 10:23:25,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 10:23:25,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 10:23:25,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 10:23:25,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 10:23:25,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:23:25,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:23:25,170 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 10:23:25,269 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:23:25,270 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:23:25,738 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 10:23:25,738 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:23:26,284 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:23:26,284 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2024-12-02 10:23:26,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:23:26 BoogieIcfgContainer [2024-12-02 10:23:26,285 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:23:26,287 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:23:26,287 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:23:26,292 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:23:26,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:23:24" (1/3) ... [2024-12-02 10:23:26,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b053ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:23:26, skipping insertion in model container [2024-12-02 10:23:26,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:23:25" (2/3) ... [2024-12-02 10:23:26,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b053ced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:23:26, skipping insertion in model container [2024-12-02 10:23:26,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:23:26" (3/3) ... [2024-12-02 10:23:26,294 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2024-12-02 10:23:26,309 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:23:26,310 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-series.wvr.c that has 5 procedures, 82 locations, 1 initial locations, 7 loop locations, and 32 error locations. [2024-12-02 10:23:26,310 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 10:23:26,443 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 10:23:26,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 88 transitions, 204 flow [2024-12-02 10:23:26,534 INFO L124 PetriNetUnfolderBase]: 7/84 cut-off events. [2024-12-02 10:23:26,537 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 10:23:26,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 84 events. 7/84 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 292 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-12-02 10:23:26,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 88 transitions, 204 flow [2024-12-02 10:23:26,544 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 82 transitions, 185 flow [2024-12-02 10:23:26,551 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:23:26,562 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;@7755d50b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:23:26,562 INFO L334 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2024-12-02 10:23:26,566 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 10:23:26,566 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-12-02 10:23:26,566 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 10:23:26,566 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:23:26,567 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 10:23:26,567 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-12-02 10:23:26,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:23:26,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1246305, now seen corresponding path program 1 times [2024-12-02 10:23:26,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:23:26,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480091428] [2024-12-02 10:23:26,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:23:26,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:23:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:23:26,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:23:26,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:23:26,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480091428] [2024-12-02 10:23:26,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480091428] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:23:26,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:23:26,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:23:26,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711305368] [2024-12-02 10:23:26,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:23:26,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:23:26,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:23:26,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:23:26,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:23:26,860 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 88 [2024-12-02 10:23:26,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 82 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:23:26,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:23:26,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 88 [2024-12-02 10:23:26,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:23:30,771 INFO L124 PetriNetUnfolderBase]: 24043/32480 cut-off events. [2024-12-02 10:23:30,771 INFO L125 PetriNetUnfolderBase]: For 793/793 co-relation queries the response was YES. [2024-12-02 10:23:30,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64294 conditions, 32480 events. 24043/32480 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 3390. Compared 231594 event pairs, 18972 based on Foata normal form. 3/16736 useless extension candidates. Maximal degree in co-relation 59710. Up to 30511 conditions per place. [2024-12-02 10:23:30,969 INFO L140 encePairwiseOnDemand]: 61/88 looper letters, 51 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2024-12-02 10:23:30,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 303 flow [2024-12-02 10:23:30,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:23:30,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:23:30,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2024-12-02 10:23:30,980 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48295454545454547 [2024-12-02 10:23:30,981 INFO L175 Difference]: Start difference. First operand has 88 places, 82 transitions, 185 flow. Second operand 4 states and 170 transitions. [2024-12-02 10:23:30,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 303 flow [2024-12-02 10:23:31,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 80 transitions, 290 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-12-02 10:23:31,309 INFO L231 Difference]: Finished difference. Result has 76 places, 80 transitions, 238 flow [2024-12-02 10:23:31,311 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=76, PETRI_TRANSITIONS=80} [2024-12-02 10:23:31,314 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, -12 predicate places. [2024-12-02 10:23:31,314 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 80 transitions, 238 flow [2024-12-02 10:23:31,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:23:31,314 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:23:31,314 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-12-02 10:23:31,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 10:23:31,314 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-12-02 10:23:31,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:23:31,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1524768845, now seen corresponding path program 1 times [2024-12-02 10:23:31,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:23:31,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944646712] [2024-12-02 10:23:31,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:23:31,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:23:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:23:31,441 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:23:31,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:23:31,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944646712] [2024-12-02 10:23:31,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944646712] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:23:31,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025095305] [2024-12-02 10:23:31,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:23:31,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:23:31,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:23:31,444 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:23:31,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:23:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:23:31,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 10:23:31,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:23:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:23:31,599 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:23:31,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025095305] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:23:31,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:23:31,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 10:23:31,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607124763] [2024-12-02 10:23:31,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:23:31,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:23:31,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:23:31,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:23:31,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:23:31,628 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 88 [2024-12-02 10:23:31,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 80 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 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) [2024-12-02 10:23:31,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:23:31,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 88 [2024-12-02 10:23:31,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:23:34,449 INFO L124 PetriNetUnfolderBase]: 24043/32477 cut-off events. [2024-12-02 10:23:34,449 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-12-02 10:23:34,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63750 conditions, 32477 events. 24043/32477 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 3409. Compared 231663 event pairs, 18972 based on Foata normal form. 3/16738 useless extension candidates. Maximal degree in co-relation 63677. Up to 30496 conditions per place. [2024-12-02 10:23:34,591 INFO L140 encePairwiseOnDemand]: 75/88 looper letters, 41 selfloop transitions, 17 changer transitions 0/77 dead transitions. [2024-12-02 10:23:34,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 77 transitions, 342 flow [2024-12-02 10:23:34,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:23:34,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 10:23:34,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-12-02 10:23:34,593 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3768939393939394 [2024-12-02 10:23:34,594 INFO L175 Difference]: Start difference. First operand has 76 places, 80 transitions, 238 flow. Second operand 6 states and 199 transitions. [2024-12-02 10:23:34,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 77 transitions, 342 flow [2024-12-02 10:23:34,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 77 transitions, 342 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 10:23:34,596 INFO L231 Difference]: Finished difference. Result has 78 places, 77 transitions, 260 flow [2024-12-02 10:23:34,596 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=78, PETRI_TRANSITIONS=77} [2024-12-02 10:23:34,597 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, -10 predicate places. [2024-12-02 10:23:34,597 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 77 transitions, 260 flow [2024-12-02 10:23:34,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 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) [2024-12-02 10:23:34,598 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:23:34,598 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-12-02 10:23:34,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:23:34,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:23:34,798 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-12-02 10:23:34,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:23:34,799 INFO L85 PathProgramCache]: Analyzing trace with hash -23192665, now seen corresponding path program 1 times [2024-12-02 10:23:34,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:23:34,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213947750] [2024-12-02 10:23:34,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:23:34,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:23:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:23:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:23:34,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:23:34,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213947750] [2024-12-02 10:23:34,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213947750] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:23:34,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110623691] [2024-12-02 10:23:34,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:23:34,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:23:34,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:23:34,913 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:23:34,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 10:23:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:23:35,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 10:23:35,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:23:35,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:23:35,042 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:23:35,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:23:35,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110623691] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:23:35,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:23:35,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-12-02 10:23:35,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109021537] [2024-12-02 10:23:35,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:23:35,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 10:23:35,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:23:35,085 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 10:23:35,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-12-02 10:23:35,119 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 88 [2024-12-02 10:23:35,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 77 transitions, 260 flow. Second operand has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 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) [2024-12-02 10:23:35,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:23:35,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 88 [2024-12-02 10:23:35,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:23:38,271 INFO L124 PetriNetUnfolderBase]: 24052/32513 cut-off events. [2024-12-02 10:23:38,272 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-12-02 10:23:38,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63891 conditions, 32513 events. 24052/32513 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 3409. Compared 231791 event pairs, 18972 based on Foata normal form. 9/16780 useless extension candidates. Maximal degree in co-relation 63679. Up to 30511 conditions per place. [2024-12-02 10:23:38,420 INFO L140 encePairwiseOnDemand]: 75/88 looper letters, 48 selfloop transitions, 37 changer transitions 0/104 dead transitions. [2024-12-02 10:23:38,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 104 transitions, 604 flow [2024-12-02 10:23:38,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 10:23:38,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 10:23:38,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 324 transitions. [2024-12-02 10:23:38,423 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36818181818181817 [2024-12-02 10:23:38,423 INFO L175 Difference]: Start difference. First operand has 78 places, 77 transitions, 260 flow. Second operand 10 states and 324 transitions. [2024-12-02 10:23:38,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 104 transitions, 604 flow [2024-12-02 10:23:38,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 104 transitions, 521 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-12-02 10:23:38,426 INFO L231 Difference]: Finished difference. Result has 85 places, 104 transitions, 475 flow [2024-12-02 10:23:38,426 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=475, PETRI_PLACES=85, PETRI_TRANSITIONS=104} [2024-12-02 10:23:38,427 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, -3 predicate places. [2024-12-02 10:23:38,427 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 104 transitions, 475 flow [2024-12-02 10:23:38,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 24.083333333333332) internal successors, (289), 12 states have internal predecessors, (289), 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) [2024-12-02 10:23:38,427 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:23:38,427 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:23:38,435 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 10:23:38,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:23:38,628 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-12-02 10:23:38,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:23:38,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1089690281, now seen corresponding path program 1 times [2024-12-02 10:23:38,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:23:38,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701020859] [2024-12-02 10:23:38,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:23:38,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:23:38,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:23:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:23:38,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:23:38,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701020859] [2024-12-02 10:23:38,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701020859] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:23:38,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:23:38,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 10:23:38,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895291170] [2024-12-02 10:23:38,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:23:38,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:23:38,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:23:38,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:23:38,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:23:38,728 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 88 [2024-12-02 10:23:38,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 104 transitions, 475 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2024-12-02 10:23:38,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:23:38,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 88 [2024-12-02 10:23:38,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:23:41,933 INFO L124 PetriNetUnfolderBase]: 31509/43660 cut-off events. [2024-12-02 10:23:41,933 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-12-02 10:23:41,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85419 conditions, 43660 events. 31509/43660 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 3813. Compared 332905 event pairs, 9618 based on Foata normal form. 0/24357 useless extension candidates. Maximal degree in co-relation 85321. Up to 25909 conditions per place. [2024-12-02 10:23:42,133 INFO L140 encePairwiseOnDemand]: 84/88 looper letters, 113 selfloop transitions, 2 changer transitions 0/137 dead transitions. [2024-12-02 10:23:42,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 137 transitions, 778 flow [2024-12-02 10:23:42,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:23:42,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:23:42,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2024-12-02 10:23:42,135 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-12-02 10:23:42,135 INFO L175 Difference]: Start difference. First operand has 85 places, 104 transitions, 475 flow. Second operand 3 states and 168 transitions. [2024-12-02 10:23:42,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 137 transitions, 778 flow [2024-12-02 10:23:42,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 137 transitions, 741 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-12-02 10:23:42,141 INFO L231 Difference]: Finished difference. Result has 86 places, 105 transitions, 452 flow [2024-12-02 10:23:42,141 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=452, PETRI_PLACES=86, PETRI_TRANSITIONS=105} [2024-12-02 10:23:42,141 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, -2 predicate places. [2024-12-02 10:23:42,141 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 105 transitions, 452 flow [2024-12-02 10:23:42,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2024-12-02 10:23:42,142 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:23:42,142 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:23:42,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 10:23:42,142 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-12-02 10:23:42,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:23:42,142 INFO L85 PathProgramCache]: Analyzing trace with hash -372535154, now seen corresponding path program 1 times [2024-12-02 10:23:42,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:23:42,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436735530] [2024-12-02 10:23:42,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:23:42,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:23:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:23:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:23:42,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:23:42,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436735530] [2024-12-02 10:23:42,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436735530] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:23:42,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:23:42,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:23:42,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963885011] [2024-12-02 10:23:42,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:23:42,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:23:42,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:23:42,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:23:42,283 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:23:42,283 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 88 [2024-12-02 10:23:42,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 105 transitions, 452 flow. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2024-12-02 10:23:42,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:23:42,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 88 [2024-12-02 10:23:42,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:23:46,645 INFO L124 PetriNetUnfolderBase]: 33685/45979 cut-off events. [2024-12-02 10:23:46,646 INFO L125 PetriNetUnfolderBase]: For 2268/2268 co-relation queries the response was YES. [2024-12-02 10:23:46,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96665 conditions, 45979 events. 33685/45979 cut-off events. For 2268/2268 co-relation queries the response was YES. Maximal size of possible extension queue 3656. Compared 346182 event pairs, 28448 based on Foata normal form. 522/25232 useless extension candidates. Maximal degree in co-relation 96542. Up to 40670 conditions per place. [2024-12-02 10:23:46,840 INFO L140 encePairwiseOnDemand]: 75/88 looper letters, 114 selfloop transitions, 9 changer transitions 1/146 dead transitions. [2024-12-02 10:23:46,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 146 transitions, 862 flow [2024-12-02 10:23:46,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:23:46,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 10:23:46,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 233 transitions. [2024-12-02 10:23:46,842 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5295454545454545 [2024-12-02 10:23:46,842 INFO L175 Difference]: Start difference. First operand has 86 places, 105 transitions, 452 flow. Second operand 5 states and 233 transitions. [2024-12-02 10:23:46,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 146 transitions, 862 flow [2024-12-02 10:23:46,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 146 transitions, 859 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 10:23:46,845 INFO L231 Difference]: Finished difference. Result has 91 places, 107 transitions, 505 flow [2024-12-02 10:23:46,845 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=505, PETRI_PLACES=91, PETRI_TRANSITIONS=107} [2024-12-02 10:23:46,845 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 3 predicate places. [2024-12-02 10:23:46,845 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 107 transitions, 505 flow [2024-12-02 10:23:46,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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) [2024-12-02 10:23:46,846 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:23:46,846 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:23:46,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 10:23:46,846 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-12-02 10:23:46,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:23:46,846 INFO L85 PathProgramCache]: Analyzing trace with hash -2140531176, now seen corresponding path program 1 times [2024-12-02 10:23:46,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:23:46,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295665441] [2024-12-02 10:23:46,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:23:46,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:23:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:23:46,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:23:46,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:23:46,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295665441] [2024-12-02 10:23:46,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295665441] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:23:46,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:23:46,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 10:23:46,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706492907] [2024-12-02 10:23:46,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:23:46,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:23:46,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:23:46,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:23:46,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:23:46,928 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 88 [2024-12-02 10:23:46,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 107 transitions, 505 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-12-02 10:23:46,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:23:46,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 88 [2024-12-02 10:23:46,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:23:51,566 INFO L124 PetriNetUnfolderBase]: 32711/42913 cut-off events. [2024-12-02 10:23:51,567 INFO L125 PetriNetUnfolderBase]: For 4928/4928 co-relation queries the response was YES. [2024-12-02 10:23:51,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98389 conditions, 42913 events. 32711/42913 cut-off events. For 4928/4928 co-relation queries the response was YES. Maximal size of possible extension queue 3302. Compared 266599 event pairs, 6084 based on Foata normal form. 292/23016 useless extension candidates. Maximal degree in co-relation 98263. Up to 38207 conditions per place. [2024-12-02 10:23:51,814 INFO L140 encePairwiseOnDemand]: 80/88 looper letters, 109 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2024-12-02 10:23:51,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 133 transitions, 802 flow [2024-12-02 10:23:51,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:23:51,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:23:51,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 165 transitions. [2024-12-02 10:23:51,815 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-12-02 10:23:51,815 INFO L175 Difference]: Start difference. First operand has 91 places, 107 transitions, 505 flow. Second operand 3 states and 165 transitions. [2024-12-02 10:23:51,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 133 transitions, 802 flow [2024-12-02 10:23:51,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 133 transitions, 794 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-12-02 10:23:51,825 INFO L231 Difference]: Finished difference. Result has 93 places, 108 transitions, 519 flow [2024-12-02 10:23:51,825 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=519, PETRI_PLACES=93, PETRI_TRANSITIONS=108} [2024-12-02 10:23:51,825 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2024-12-02 10:23:51,825 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 108 transitions, 519 flow [2024-12-02 10:23:51,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2024-12-02 10:23:51,826 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:23:51,826 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:23:51,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 10:23:51,826 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-12-02 10:23:51,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:23:51,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1969876562, now seen corresponding path program 1 times [2024-12-02 10:23:51,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:23:51,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063213777] [2024-12-02 10:23:51,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:23:51,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:23:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:23:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:23:51,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:23:51,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063213777] [2024-12-02 10:23:51,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063213777] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:23:51,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:23:51,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:23:51,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721350412] [2024-12-02 10:23:51,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:23:51,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:23:51,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:23:51,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:23:51,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:23:51,963 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 88 [2024-12-02 10:23:51,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 108 transitions, 519 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2024-12-02 10:23:51,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:23:51,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 88 [2024-12-02 10:23:51,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:23:55,231 INFO L124 PetriNetUnfolderBase]: 28400/40360 cut-off events. [2024-12-02 10:23:55,231 INFO L125 PetriNetUnfolderBase]: For 8177/8177 co-relation queries the response was YES. [2024-12-02 10:23:55,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100277 conditions, 40360 events. 28400/40360 cut-off events. For 8177/8177 co-relation queries the response was YES. Maximal size of possible extension queue 3179. Compared 314233 event pairs, 23714 based on Foata normal form. 292/23511 useless extension candidates. Maximal degree in co-relation 100065. Up to 34534 conditions per place. [2024-12-02 10:23:55,434 INFO L140 encePairwiseOnDemand]: 80/88 looper letters, 132 selfloop transitions, 11 changer transitions 1/166 dead transitions. [2024-12-02 10:23:55,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 166 transitions, 1098 flow [2024-12-02 10:23:55,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:23:55,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 10:23:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 233 transitions. [2024-12-02 10:23:55,436 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5295454545454545 [2024-12-02 10:23:55,436 INFO L175 Difference]: Start difference. First operand has 93 places, 108 transitions, 519 flow. Second operand 5 states and 233 transitions. [2024-12-02 10:23:55,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 166 transitions, 1098 flow [2024-12-02 10:23:55,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 166 transitions, 1096 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 10:23:55,443 INFO L231 Difference]: Finished difference. Result has 98 places, 116 transitions, 635 flow [2024-12-02 10:23:55,443 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=635, PETRI_PLACES=98, PETRI_TRANSITIONS=116} [2024-12-02 10:23:55,443 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 10 predicate places. [2024-12-02 10:23:55,443 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 116 transitions, 635 flow [2024-12-02 10:23:55,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2024-12-02 10:23:55,443 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:23:55,443 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:23:55,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 10:23:55,444 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-12-02 10:23:55,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:23:55,444 INFO L85 PathProgramCache]: Analyzing trace with hash -300894891, now seen corresponding path program 1 times [2024-12-02 10:23:55,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:23:55,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035669251] [2024-12-02 10:23:55,444 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:23:55,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:23:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:23:55,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:23:55,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:23:55,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035669251] [2024-12-02 10:23:55,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035669251] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:23:55,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:23:55,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:23:55,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287719217] [2024-12-02 10:23:55,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:23:55,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:23:55,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:23:55,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:23:55,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:23:55,666 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 88 [2024-12-02 10:23:55,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 116 transitions, 635 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 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) [2024-12-02 10:23:55,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:23:55,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 88 [2024-12-02 10:23:55,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:24:04,613 INFO L124 PetriNetUnfolderBase]: 64343/89015 cut-off events. [2024-12-02 10:24:04,614 INFO L125 PetriNetUnfolderBase]: For 16397/17661 co-relation queries the response was YES. [2024-12-02 10:24:04,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225447 conditions, 89015 events. 64343/89015 cut-off events. For 16397/17661 co-relation queries the response was YES. Maximal size of possible extension queue 5865. Compared 721156 event pairs, 25147 based on Foata normal form. 0/52644 useless extension candidates. Maximal degree in co-relation 225230. Up to 37886 conditions per place. [2024-12-02 10:24:05,050 INFO L140 encePairwiseOnDemand]: 79/88 looper letters, 173 selfloop transitions, 19 changer transitions 0/211 dead transitions. [2024-12-02 10:24:05,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 211 transitions, 1345 flow [2024-12-02 10:24:05,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:24:05,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 10:24:05,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 300 transitions. [2024-12-02 10:24:05,052 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2024-12-02 10:24:05,052 INFO L175 Difference]: Start difference. First operand has 98 places, 116 transitions, 635 flow. Second operand 6 states and 300 transitions. [2024-12-02 10:24:05,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 211 transitions, 1345 flow [2024-12-02 10:24:05,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 211 transitions, 1341 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-12-02 10:24:05,079 INFO L231 Difference]: Finished difference. Result has 105 places, 118 transitions, 703 flow [2024-12-02 10:24:05,079 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=703, PETRI_PLACES=105, PETRI_TRANSITIONS=118} [2024-12-02 10:24:05,080 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 17 predicate places. [2024-12-02 10:24:05,080 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 118 transitions, 703 flow [2024-12-02 10:24:05,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 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) [2024-12-02 10:24:05,080 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:24:05,080 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-12-02 10:24:05,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 10:24:05,080 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-12-02 10:24:05,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:24:05,081 INFO L85 PathProgramCache]: Analyzing trace with hash 993427257, now seen corresponding path program 2 times [2024-12-02 10:24:05,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:24:05,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942464467] [2024-12-02 10:24:05,081 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:24:05,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:24:05,092 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 10:24:05,093 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:24:05,126 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 10:24:05,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:24:05,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942464467] [2024-12-02 10:24:05,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942464467] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:24:05,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739153599] [2024-12-02 10:24:05,126 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:24:05,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:24:05,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:24:05,128 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:24:05,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 10:24:05,215 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 10:24:05,215 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:24:05,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 10:24:05,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:24:05,241 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 10:24:05,241 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:24:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 10:24:05,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739153599] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:24:05,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:24:05,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-12-02 10:24:05,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211786059] [2024-12-02 10:24:05,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:24:05,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:24:05,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:24:05,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:24:05,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:24:05,285 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 88 [2024-12-02 10:24:05,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 118 transitions, 703 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-12-02 10:24:05,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:24:05,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 88 [2024-12-02 10:24:05,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:24:11,060 INFO L124 PetriNetUnfolderBase]: 44291/63656 cut-off events. [2024-12-02 10:24:11,061 INFO L125 PetriNetUnfolderBase]: For 14267/14267 co-relation queries the response was YES. [2024-12-02 10:24:11,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166169 conditions, 63656 events. 44291/63656 cut-off events. For 14267/14267 co-relation queries the response was YES. Maximal size of possible extension queue 4238. Compared 535588 event pairs, 40929 based on Foata normal form. 1/37483 useless extension candidates. Maximal degree in co-relation 165944. Up to 59548 conditions per place. [2024-12-02 10:24:11,418 INFO L140 encePairwiseOnDemand]: 83/88 looper letters, 81 selfloop transitions, 16 changer transitions 0/117 dead transitions. [2024-12-02 10:24:11,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 117 transitions, 887 flow [2024-12-02 10:24:11,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:24:11,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:24:11,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-12-02 10:24:11,420 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-12-02 10:24:11,420 INFO L175 Difference]: Start difference. First operand has 105 places, 118 transitions, 703 flow. Second operand 4 states and 141 transitions. [2024-12-02 10:24:11,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 117 transitions, 887 flow [2024-12-02 10:24:11,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 117 transitions, 862 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 10:24:11,443 INFO L231 Difference]: Finished difference. Result has 105 places, 117 transitions, 700 flow [2024-12-02 10:24:11,443 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=700, PETRI_PLACES=105, PETRI_TRANSITIONS=117} [2024-12-02 10:24:11,443 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 17 predicate places. [2024-12-02 10:24:11,444 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 117 transitions, 700 flow [2024-12-02 10:24:11,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-12-02 10:24:11,444 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:24:11,444 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:24:11,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 10:24:11,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:24:11,644 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-12-02 10:24:11,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:24:11,645 INFO L85 PathProgramCache]: Analyzing trace with hash 2092705235, now seen corresponding path program 1 times [2024-12-02 10:24:11,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:24:11,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397502598] [2024-12-02 10:24:11,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:24:11,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:24:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:24:11,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:24:11,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:24:11,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397502598] [2024-12-02 10:24:11,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397502598] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:24:11,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045174006] [2024-12-02 10:24:11,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:24:11,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:24:11,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:24:11,965 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:24:11,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 10:24:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:24:12,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 10:24:12,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:24:12,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 10:24:12,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:24:12,176 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:24:12,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2024-12-02 10:24:12,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2024-12-02 10:24:12,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:24:12,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045174006] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:24:12,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:24:12,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-12-02 10:24:12,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075813733] [2024-12-02 10:24:12,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:24:12,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 10:24:12,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:24:12,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 10:24:12,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-12-02 10:24:12,328 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 88 [2024-12-02 10:24:12,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 117 transitions, 700 flow. Second operand has 12 states, 12 states have (on average 31.333333333333332) internal successors, (376), 12 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:24:12,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:24:12,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 88 [2024-12-02 10:24:12,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:24:19,097 INFO L124 PetriNetUnfolderBase]: 40744/59542 cut-off events. [2024-12-02 10:24:19,097 INFO L125 PetriNetUnfolderBase]: For 12953/12953 co-relation queries the response was YES. [2024-12-02 10:24:19,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152974 conditions, 59542 events. 40744/59542 cut-off events. For 12953/12953 co-relation queries the response was YES. Maximal size of possible extension queue 3854. Compared 503353 event pairs, 17736 based on Foata normal form. 0/37189 useless extension candidates. Maximal degree in co-relation 152753. Up to 15442 conditions per place. [2024-12-02 10:24:19,410 INFO L140 encePairwiseOnDemand]: 75/88 looper letters, 153 selfloop transitions, 33 changer transitions 0/208 dead transitions. [2024-12-02 10:24:19,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 208 transitions, 1388 flow [2024-12-02 10:24:19,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:24:19,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-12-02 10:24:19,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 374 transitions. [2024-12-02 10:24:19,412 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-12-02 10:24:19,412 INFO L175 Difference]: Start difference. First operand has 105 places, 117 transitions, 700 flow. Second operand 8 states and 374 transitions. [2024-12-02 10:24:19,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 208 transitions, 1388 flow [2024-12-02 10:24:19,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 208 transitions, 1356 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 10:24:19,472 INFO L231 Difference]: Finished difference. Result has 111 places, 118 transitions, 751 flow [2024-12-02 10:24:19,472 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=751, PETRI_PLACES=111, PETRI_TRANSITIONS=118} [2024-12-02 10:24:19,472 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 23 predicate places. [2024-12-02 10:24:19,472 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 118 transitions, 751 flow [2024-12-02 10:24:19,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 31.333333333333332) internal successors, (376), 12 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:24:19,472 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:24:19,472 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:24:19,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 10:24:19,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 10:24:19,673 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-12-02 10:24:19,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:24:19,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1786827839, now seen corresponding path program 1 times [2024-12-02 10:24:19,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:24:19,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52169717] [2024-12-02 10:24:19,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:24:19,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:24:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:24:19,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:24:19,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:24:19,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52169717] [2024-12-02 10:24:19,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52169717] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:24:19,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330020687] [2024-12-02 10:24:19,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:24:19,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:24:19,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:24:19,726 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:24:19,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 10:24:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:24:19,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 10:24:19,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:24:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:24:19,900 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:24:19,996 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:24:19,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330020687] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:24:19,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:24:19,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 6, 6] total 12 [2024-12-02 10:24:19,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443696047] [2024-12-02 10:24:19,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:24:19,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 10:24:19,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:24:19,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 10:24:19,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-12-02 10:24:20,112 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 88 [2024-12-02 10:24:20,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 118 transitions, 751 flow. Second operand has 13 states, 13 states have (on average 25.23076923076923) internal successors, (328), 13 states have internal predecessors, (328), 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) [2024-12-02 10:24:20,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:24:20,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 88 [2024-12-02 10:24:20,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:24:34,982 INFO L124 PetriNetUnfolderBase]: 97980/137416 cut-off events. [2024-12-02 10:24:34,983 INFO L125 PetriNetUnfolderBase]: For 64416/64416 co-relation queries the response was YES. [2024-12-02 10:24:35,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365709 conditions, 137416 events. 97980/137416 cut-off events. For 64416/64416 co-relation queries the response was YES. Maximal size of possible extension queue 6849. Compared 1097739 event pairs, 15941 based on Foata normal form. 1592/89316 useless extension candidates. Maximal degree in co-relation 365386. Up to 41394 conditions per place. [2024-12-02 10:24:35,730 INFO L140 encePairwiseOnDemand]: 73/88 looper letters, 302 selfloop transitions, 45 changer transitions 1/368 dead transitions. [2024-12-02 10:24:35,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 368 transitions, 2678 flow [2024-12-02 10:24:35,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 10:24:35,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-12-02 10:24:35,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 607 transitions. [2024-12-02 10:24:35,732 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45984848484848484 [2024-12-02 10:24:35,732 INFO L175 Difference]: Start difference. First operand has 111 places, 118 transitions, 751 flow. Second operand 15 states and 607 transitions. [2024-12-02 10:24:35,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 368 transitions, 2678 flow [2024-12-02 10:24:35,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 368 transitions, 2562 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-12-02 10:24:35,765 INFO L231 Difference]: Finished difference. Result has 130 places, 147 transitions, 1110 flow [2024-12-02 10:24:35,765 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1110, PETRI_PLACES=130, PETRI_TRANSITIONS=147} [2024-12-02 10:24:35,765 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 42 predicate places. [2024-12-02 10:24:35,765 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 147 transitions, 1110 flow [2024-12-02 10:24:35,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 25.23076923076923) internal successors, (328), 13 states have internal predecessors, (328), 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) [2024-12-02 10:24:35,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:24:35,766 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2024-12-02 10:24:35,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 10:24:35,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-02 10:24:35,966 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-12-02 10:24:35,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:24:35,966 INFO L85 PathProgramCache]: Analyzing trace with hash 419041661, now seen corresponding path program 1 times [2024-12-02 10:24:35,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:24:35,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156555366] [2024-12-02 10:24:35,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:24:35,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:24:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:24:36,102 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:24:36,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:24:36,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156555366] [2024-12-02 10:24:36,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156555366] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:24:36,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195395754] [2024-12-02 10:24:36,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:24:36,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:24:36,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:24:36,104 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:24:36,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 10:24:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:24:36,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 10:24:36,208 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:24:36,250 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:24:36,250 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:24:36,383 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:24:36,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195395754] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:24:36,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:24:36,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-12-02 10:24:36,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022896892] [2024-12-02 10:24:36,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:24:36,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 10:24:36,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:24:36,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 10:24:36,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-12-02 10:24:36,425 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 88 [2024-12-02 10:24:36,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 147 transitions, 1110 flow. Second operand has 24 states, 24 states have (on average 24.083333333333332) internal successors, (578), 24 states have internal predecessors, (578), 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) [2024-12-02 10:24:36,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:24:36,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 88 [2024-12-02 10:24:36,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:24:49,143 INFO L124 PetriNetUnfolderBase]: 79245/116291 cut-off events. [2024-12-02 10:24:49,143 INFO L125 PetriNetUnfolderBase]: For 111982/112100 co-relation queries the response was YES. [2024-12-02 10:24:49,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340383 conditions, 116291 events. 79245/116291 cut-off events. For 111982/112100 co-relation queries the response was YES. Maximal size of possible extension queue 6729. Compared 1056002 event pairs, 73138 based on Foata normal form. 63/83380 useless extension candidates. Maximal degree in co-relation 338949. Up to 106712 conditions per place. [2024-12-02 10:24:49,921 INFO L140 encePairwiseOnDemand]: 76/88 looper letters, 59 selfloop transitions, 152 changer transitions 0/231 dead transitions. [2024-12-02 10:24:49,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 231 transitions, 2342 flow [2024-12-02 10:24:49,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 10:24:49,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-12-02 10:24:49,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 656 transitions. [2024-12-02 10:24:49,924 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.33884297520661155 [2024-12-02 10:24:49,924 INFO L175 Difference]: Start difference. First operand has 130 places, 147 transitions, 1110 flow. Second operand 22 states and 656 transitions. [2024-12-02 10:24:49,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 231 transitions, 2342 flow [2024-12-02 10:24:50,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 231 transitions, 2330 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-12-02 10:24:50,085 INFO L231 Difference]: Finished difference. Result has 155 places, 231 transitions, 2318 flow [2024-12-02 10:24:50,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2318, PETRI_PLACES=155, PETRI_TRANSITIONS=231} [2024-12-02 10:24:50,086 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 67 predicate places. [2024-12-02 10:24:50,086 INFO L471 AbstractCegarLoop]: Abstraction has has 155 places, 231 transitions, 2318 flow [2024-12-02 10:24:50,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 24.083333333333332) internal successors, (578), 24 states have internal predecessors, (578), 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) [2024-12-02 10:24:50,086 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:24:50,086 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:24:50,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 10:24:50,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 10:24:50,287 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-12-02 10:24:50,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:24:50,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1043937058, now seen corresponding path program 1 times [2024-12-02 10:24:50,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:24:50,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438376944] [2024-12-02 10:24:50,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:24:50,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:24:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:24:50,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:24:50,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:24:50,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438376944] [2024-12-02 10:24:50,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438376944] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:24:50,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:24:50,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 10:24:50,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737680786] [2024-12-02 10:24:50,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:24:50,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:24:50,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:24:50,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:24:50,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:24:50,331 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 88 [2024-12-02 10:24:50,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 231 transitions, 2318 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:24:50,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:24:50,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 88 [2024-12-02 10:24:50,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:25:02,697 INFO L124 PetriNetUnfolderBase]: 73060/102289 cut-off events. [2024-12-02 10:25:02,697 INFO L125 PetriNetUnfolderBase]: For 86682/86778 co-relation queries the response was YES. [2024-12-02 10:25:03,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302063 conditions, 102289 events. 73060/102289 cut-off events. For 86682/86778 co-relation queries the response was YES. Maximal size of possible extension queue 5021. Compared 772529 event pairs, 21306 based on Foata normal form. 696/71076 useless extension candidates. Maximal degree in co-relation 301567. Up to 75025 conditions per place. [2024-12-02 10:25:03,427 INFO L140 encePairwiseOnDemand]: 80/88 looper letters, 233 selfloop transitions, 2 changer transitions 2/259 dead transitions. [2024-12-02 10:25:03,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 259 transitions, 2922 flow [2024-12-02 10:25:03,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:25:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:25:03,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2024-12-02 10:25:03,428 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2024-12-02 10:25:03,428 INFO L175 Difference]: Start difference. First operand has 155 places, 231 transitions, 2318 flow. Second operand 3 states and 162 transitions. [2024-12-02 10:25:03,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 259 transitions, 2922 flow [2024-12-02 10:25:03,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 259 transitions, 2536 flow, removed 107 selfloop flow, removed 9 redundant places. [2024-12-02 10:25:03,491 INFO L231 Difference]: Finished difference. Result has 149 places, 230 transitions, 1936 flow [2024-12-02 10:25:03,491 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=1932, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1936, PETRI_PLACES=149, PETRI_TRANSITIONS=230} [2024-12-02 10:25:03,491 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 61 predicate places. [2024-12-02 10:25:03,491 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 230 transitions, 1936 flow [2024-12-02 10:25:03,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:25:03,491 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:25:03,492 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:25:03,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 10:25:03,492 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-12-02 10:25:03,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:03,492 INFO L85 PathProgramCache]: Analyzing trace with hash 490131346, now seen corresponding path program 1 times [2024-12-02 10:25:03,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:03,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917386302] [2024-12-02 10:25:03,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:03,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:03,719 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 10:25:03,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:03,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917386302] [2024-12-02 10:25:03,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917386302] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:25:03,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71801520] [2024-12-02 10:25:03,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:03,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:25:03,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:25:03,722 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:25:03,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 10:25:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:03,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 10:25:03,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:25:03,858 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 10:25:03,858 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:25:03,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71801520] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:25:03,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:25:03,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-12-02 10:25:03,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515500008] [2024-12-02 10:25:03,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:25:03,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:25:03,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:03,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:25:03,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:25:03,867 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 88 [2024-12-02 10:25:03,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 230 transitions, 1936 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2024-12-02 10:25:03,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:25:03,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 88 [2024-12-02 10:25:03,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:25:13,509 INFO L124 PetriNetUnfolderBase]: 55347/85931 cut-off events. [2024-12-02 10:25:13,509 INFO L125 PetriNetUnfolderBase]: For 82996/83161 co-relation queries the response was YES. [2024-12-02 10:25:13,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254631 conditions, 85931 events. 55347/85931 cut-off events. For 82996/83161 co-relation queries the response was YES. Maximal size of possible extension queue 4844. Compared 797266 event pairs, 11137 based on Foata normal form. 2878/67525 useless extension candidates. Maximal degree in co-relation 254194. Up to 58111 conditions per place. [2024-12-02 10:25:14,169 INFO L140 encePairwiseOnDemand]: 85/88 looper letters, 236 selfloop transitions, 3 changer transitions 0/261 dead transitions. [2024-12-02 10:25:14,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 261 transitions, 2543 flow [2024-12-02 10:25:14,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:25:14,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:25:14,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 195 transitions. [2024-12-02 10:25:14,170 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5539772727272727 [2024-12-02 10:25:14,170 INFO L175 Difference]: Start difference. First operand has 149 places, 230 transitions, 1936 flow. Second operand 4 states and 195 transitions. [2024-12-02 10:25:14,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 261 transitions, 2543 flow [2024-12-02 10:25:14,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 261 transitions, 2523 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-12-02 10:25:14,617 INFO L231 Difference]: Finished difference. Result has 147 places, 228 transitions, 1914 flow [2024-12-02 10:25:14,618 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1914, PETRI_PLACES=147, PETRI_TRANSITIONS=228} [2024-12-02 10:25:14,618 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 59 predicate places. [2024-12-02 10:25:14,618 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 228 transitions, 1914 flow [2024-12-02 10:25:14,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2024-12-02 10:25:14,618 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:25:14,618 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:25:14,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 10:25:14,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:25:14,819 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-12-02 10:25:14,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:14,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1993269739, now seen corresponding path program 1 times [2024-12-02 10:25:14,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:14,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478616181] [2024-12-02 10:25:14,819 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:14,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:14,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:25:14,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:14,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478616181] [2024-12-02 10:25:14,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478616181] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:25:14,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:25:14,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:25:14,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936601833] [2024-12-02 10:25:14,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:25:14,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:25:14,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:14,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:25:14,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:25:15,029 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 88 [2024-12-02 10:25:15,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 228 transitions, 1914 flow. Second operand has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 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) [2024-12-02 10:25:15,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:25:15,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 88 [2024-12-02 10:25:15,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:25:30,209 INFO L124 PetriNetUnfolderBase]: 95689/124983 cut-off events. [2024-12-02 10:25:30,209 INFO L125 PetriNetUnfolderBase]: For 90306/90501 co-relation queries the response was YES. [2024-12-02 10:25:30,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380305 conditions, 124983 events. 95689/124983 cut-off events. For 90306/90501 co-relation queries the response was YES. Maximal size of possible extension queue 6330. Compared 857816 event pairs, 15205 based on Foata normal form. 20/81193 useless extension candidates. Maximal degree in co-relation 379869. Up to 96686 conditions per place. [2024-12-02 10:25:31,095 INFO L140 encePairwiseOnDemand]: 81/88 looper letters, 211 selfloop transitions, 30 changer transitions 29/288 dead transitions. [2024-12-02 10:25:31,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 288 transitions, 2655 flow [2024-12-02 10:25:31,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:25:31,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 10:25:31,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 268 transitions. [2024-12-02 10:25:31,097 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5075757575757576 [2024-12-02 10:25:31,097 INFO L175 Difference]: Start difference. First operand has 147 places, 228 transitions, 1914 flow. Second operand 6 states and 268 transitions. [2024-12-02 10:25:31,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 288 transitions, 2655 flow [2024-12-02 10:25:31,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 288 transitions, 2651 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 10:25:31,233 INFO L231 Difference]: Finished difference. Result has 152 places, 225 transitions, 1942 flow [2024-12-02 10:25:31,233 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=1910, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1942, PETRI_PLACES=152, PETRI_TRANSITIONS=225} [2024-12-02 10:25:31,233 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 64 predicate places. [2024-12-02 10:25:31,234 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 225 transitions, 1942 flow [2024-12-02 10:25:31,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 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) [2024-12-02 10:25:31,234 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:25:31,234 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:25:31,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 10:25:31,234 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-12-02 10:25:31,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:31,234 INFO L85 PathProgramCache]: Analyzing trace with hash -699481094, now seen corresponding path program 1 times [2024-12-02 10:25:31,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:31,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727987840] [2024-12-02 10:25:31,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:31,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:25:31,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:31,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727987840] [2024-12-02 10:25:31,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727987840] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:25:31,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121336267] [2024-12-02 10:25:31,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:31,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:25:31,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:25:31,334 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:25:31,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 10:25:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:31,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 10:25:31,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:25:31,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:25:31,529 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:25:31,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:25:31,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121336267] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:25:31,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:25:31,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-12-02 10:25:31,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829696208] [2024-12-02 10:25:31,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:25:31,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 10:25:31,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:31,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 10:25:31,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-12-02 10:25:31,704 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 88 [2024-12-02 10:25:31,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 225 transitions, 1942 flow. Second operand has 15 states, 15 states have (on average 24.866666666666667) internal successors, (373), 15 states have internal predecessors, (373), 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) [2024-12-02 10:25:31,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:25:31,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 88 [2024-12-02 10:25:31,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:25:46,192 INFO L124 PetriNetUnfolderBase]: 72017/108409 cut-off events. [2024-12-02 10:25:46,192 INFO L125 PetriNetUnfolderBase]: For 97263/97339 co-relation queries the response was YES. [2024-12-02 10:25:46,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332149 conditions, 108409 events. 72017/108409 cut-off events. For 97263/97339 co-relation queries the response was YES. Maximal size of possible extension queue 6155. Compared 994630 event pairs, 51455 based on Foata normal form. 3585/82336 useless extension candidates. Maximal degree in co-relation 331575. Up to 62311 conditions per place. [2024-12-02 10:25:47,234 INFO L140 encePairwiseOnDemand]: 76/88 looper letters, 188 selfloop transitions, 216 changer transitions 2/425 dead transitions. [2024-12-02 10:25:47,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 425 transitions, 4242 flow [2024-12-02 10:25:47,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 10:25:47,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-12-02 10:25:47,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 468 transitions. [2024-12-02 10:25:47,235 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37987012987012986 [2024-12-02 10:25:47,235 INFO L175 Difference]: Start difference. First operand has 152 places, 225 transitions, 1942 flow. Second operand 14 states and 468 transitions. [2024-12-02 10:25:47,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 425 transitions, 4242 flow [2024-12-02 10:25:47,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 425 transitions, 4195 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-12-02 10:25:47,686 INFO L231 Difference]: Finished difference. Result has 157 places, 314 transitions, 3306 flow [2024-12-02 10:25:47,686 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=1904, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3306, PETRI_PLACES=157, PETRI_TRANSITIONS=314} [2024-12-02 10:25:47,686 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 69 predicate places. [2024-12-02 10:25:47,686 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 314 transitions, 3306 flow [2024-12-02 10:25:47,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 24.866666666666667) internal successors, (373), 15 states have internal predecessors, (373), 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) [2024-12-02 10:25:47,686 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:25:47,686 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:25:47,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 10:25:47,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 10:25:47,887 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-12-02 10:25:47,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:25:47,887 INFO L85 PathProgramCache]: Analyzing trace with hash 832090995, now seen corresponding path program 1 times [2024-12-02 10:25:47,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:25:47,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232427147] [2024-12-02 10:25:47,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:47,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:25:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:49,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:25:49,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:25:49,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232427147] [2024-12-02 10:25:49,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232427147] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:25:49,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426114812] [2024-12-02 10:25:49,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:25:49,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:25:49,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:25:49,027 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:25:49,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 10:25:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:25:49,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 10:25:49,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:25:49,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 10:25:49,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:25:49,332 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:25:49,511 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:25:49,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 132 [2024-12-02 10:25:49,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-12-02 10:25:49,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:25:49,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 118 [2024-12-02 10:25:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:25:49,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426114812] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:25:49,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:25:49,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 18 [2024-12-02 10:25:49,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6361838] [2024-12-02 10:25:49,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:25:49,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 10:25:49,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:25:49,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 10:25:49,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-12-02 10:25:50,407 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 88 [2024-12-02 10:25:50,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 314 transitions, 3306 flow. Second operand has 20 states, 20 states have (on average 25.1) internal successors, (502), 20 states have internal predecessors, (502), 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) [2024-12-02 10:25:50,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:25:50,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 88 [2024-12-02 10:25:50,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:26:09,541 INFO L124 PetriNetUnfolderBase]: 100154/144612 cut-off events. [2024-12-02 10:26:09,541 INFO L125 PetriNetUnfolderBase]: For 161774/161774 co-relation queries the response was YES. [2024-12-02 10:26:10,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450270 conditions, 144612 events. 100154/144612 cut-off events. For 161774/161774 co-relation queries the response was YES. Maximal size of possible extension queue 7711. Compared 1227171 event pairs, 13627 based on Foata normal form. 0/107862 useless extension candidates. Maximal degree in co-relation 449641. Up to 55540 conditions per place. [2024-12-02 10:26:10,590 INFO L140 encePairwiseOnDemand]: 70/88 looper letters, 402 selfloop transitions, 102 changer transitions 0/523 dead transitions. [2024-12-02 10:26:10,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 523 transitions, 5471 flow [2024-12-02 10:26:10,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 10:26:10,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-12-02 10:26:10,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 751 transitions. [2024-12-02 10:26:10,592 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38791322314049587 [2024-12-02 10:26:10,592 INFO L175 Difference]: Start difference. First operand has 157 places, 314 transitions, 3306 flow. Second operand 22 states and 751 transitions. [2024-12-02 10:26:10,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 523 transitions, 5471 flow [2024-12-02 10:26:11,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 523 transitions, 5406 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-12-02 10:26:11,374 INFO L231 Difference]: Finished difference. Result has 179 places, 344 transitions, 3738 flow [2024-12-02 10:26:11,374 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=3261, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3738, PETRI_PLACES=179, PETRI_TRANSITIONS=344} [2024-12-02 10:26:11,374 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 91 predicate places. [2024-12-02 10:26:11,374 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 344 transitions, 3738 flow [2024-12-02 10:26:11,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 25.1) internal successors, (502), 20 states have internal predecessors, (502), 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) [2024-12-02 10:26:11,375 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:26:11,375 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:26:11,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 10:26:11,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 10:26:11,575 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-12-02 10:26:11,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:26:11,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1837439786, now seen corresponding path program 1 times [2024-12-02 10:26:11,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:26:11,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439504205] [2024-12-02 10:26:11,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:26:11,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:26:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:26:12,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:26:12,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:26:12,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439504205] [2024-12-02 10:26:12,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439504205] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:26:12,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264128569] [2024-12-02 10:26:12,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:26:12,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:26:12,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:26:12,145 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:26:12,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 10:26:12,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:26:12,271 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 10:26:12,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:26:12,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-02 10:26:12,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:26:12,442 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:26:12,595 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:26:12,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 128 [2024-12-02 10:26:12,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2024-12-02 10:26:12,646 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 10:26:12,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 117 [2024-12-02 10:26:12,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:26:12,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264128569] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:26:12,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:26:12,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 16 [2024-12-02 10:26:12,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999850913] [2024-12-02 10:26:12,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:26:12,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 10:26:12,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:26:12,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 10:26:12,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2024-12-02 10:26:13,263 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 88 [2024-12-02 10:26:13,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 344 transitions, 3738 flow. Second operand has 18 states, 18 states have (on average 25.27777777777778) internal successors, (455), 18 states have internal predecessors, (455), 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) [2024-12-02 10:26:13,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:26:13,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 88 [2024-12-02 10:26:13,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:26:33,310 INFO L124 PetriNetUnfolderBase]: 100168/146590 cut-off events. [2024-12-02 10:26:33,310 INFO L125 PetriNetUnfolderBase]: For 257768/257768 co-relation queries the response was YES. [2024-12-02 10:26:34,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501728 conditions, 146590 events. 100168/146590 cut-off events. For 257768/257768 co-relation queries the response was YES. Maximal size of possible extension queue 7827. Compared 1292199 event pairs, 16377 based on Foata normal form. 0/119685 useless extension candidates. Maximal degree in co-relation 501084. Up to 59518 conditions per place. [2024-12-02 10:26:34,762 INFO L140 encePairwiseOnDemand]: 71/88 looper letters, 451 selfloop transitions, 111 changer transitions 0/581 dead transitions. [2024-12-02 10:26:34,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 581 transitions, 6594 flow [2024-12-02 10:26:34,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 10:26:34,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-12-02 10:26:34,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 583 transitions. [2024-12-02 10:26:34,764 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-12-02 10:26:34,764 INFO L175 Difference]: Start difference. First operand has 179 places, 344 transitions, 3738 flow. Second operand 16 states and 583 transitions. [2024-12-02 10:26:34,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 581 transitions, 6594 flow [2024-12-02 10:26:36,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 581 transitions, 6438 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-12-02 10:26:36,431 INFO L231 Difference]: Finished difference. Result has 183 places, 354 transitions, 3903 flow [2024-12-02 10:26:36,431 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=3580, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3903, PETRI_PLACES=183, PETRI_TRANSITIONS=354} [2024-12-02 10:26:36,431 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 95 predicate places. [2024-12-02 10:26:36,431 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 354 transitions, 3903 flow [2024-12-02 10:26:36,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 25.27777777777778) internal successors, (455), 18 states have internal predecessors, (455), 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) [2024-12-02 10:26:36,432 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:26:36,432 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:26:36,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 10:26:36,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7f7f186-bd65-43b8-9b94-fd8b4d148ef8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 10:26:36,632 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2024-12-02 10:26:36,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:26:36,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1245757940, now seen corresponding path program 1 times [2024-12-02 10:26:36,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:26:36,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700791779] [2024-12-02 10:26:36,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:26:36,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:26:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:26:36,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 10:26:36,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:26:36,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700791779] [2024-12-02 10:26:36,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700791779] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:26:36,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:26:36,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 10:26:36,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437657341] [2024-12-02 10:26:36,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:26:36,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:26:36,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:26:36,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:26:36,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:26:36,732 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 88 [2024-12-02 10:26:36,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 354 transitions, 3903 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2024-12-02 10:26:36,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:26:36,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 88 [2024-12-02 10:26:36,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand