./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.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_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/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_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/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_713294d4-93a0-4559-b2e2-f3eaddafdcb1/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 fdebcc32a5907a5601109dc3fb4ac7750aa88ce6953c83cffe48f47befc15286 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:38:23,891 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:38:23,954 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-02 10:38:23,960 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:38:23,960 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:38:23,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:38:23,984 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:38:23,984 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:38:23,984 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:38:23,984 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:38:23,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:38:23,985 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:38:23,985 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:38:23,985 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:38:23,985 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:38:23,985 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:38:23,986 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 10:38:23,986 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 10:38:23,986 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:38:23,986 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 10:38:23,986 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:38:23,986 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 10:38:23,986 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:38:23,986 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 10:38:23,986 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 10:38:23,987 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 10:38:23,987 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 10:38:23,987 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:38:23,987 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:38:23,987 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:38:23,987 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:38:23,987 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:38:23,987 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:38:23,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:38:23,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:38:23,988 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:38:23,988 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:38:23,988 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:38:23,988 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:38:23,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:38:23,988 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:38:23,988 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:38:23,988 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 10:38:23,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 10:38:23,988 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:38:23,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:38:23,989 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:38:23,989 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:38:23,989 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:38:23,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:38:23,990 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_713294d4-93a0-4559-b2e2-f3eaddafdcb1/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 -> fdebcc32a5907a5601109dc3fb4ac7750aa88ce6953c83cffe48f47befc15286 [2024-12-02 10:38:24,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:38:24,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:38:24,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:38:24,285 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:38:24,286 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:38:24,287 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c [2024-12-02 10:38:27,011 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/data/3a42651b8/489548a9bba1495ba886bdeab540590c/FLAG0e18cc8a4 [2024-12-02 10:38:27,230 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:38:27,230 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/sv-benchmarks/c/weaver/popl20-bad-buffer-mult-alt3.wvr.c [2024-12-02 10:38:27,240 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/data/3a42651b8/489548a9bba1495ba886bdeab540590c/FLAG0e18cc8a4 [2024-12-02 10:38:27,566 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/data/3a42651b8/489548a9bba1495ba886bdeab540590c [2024-12-02 10:38:27,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:38:27,569 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:38:27,570 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:38:27,571 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:38:27,576 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:38:27,576 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:38:27" (1/1) ... [2024-12-02 10:38:27,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c935a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:27, skipping insertion in model container [2024-12-02 10:38:27,578 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:38:27" (1/1) ... [2024-12-02 10:38:27,598 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:38:27,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:38:27,812 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:38:27,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:38:27,862 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:38:27,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:27 WrapperNode [2024-12-02 10:38:27,863 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:38:27,864 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:38:27,864 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:38:27,864 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:38:27,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:27" (1/1) ... [2024-12-02 10:38:27,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:27" (1/1) ... [2024-12-02 10:38:27,907 INFO L138 Inliner]: procedures = 25, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 353 [2024-12-02 10:38:27,907 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:38:27,908 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:38:27,908 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:38:27,908 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:38:27,917 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:27" (1/1) ... [2024-12-02 10:38:27,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:27" (1/1) ... [2024-12-02 10:38:27,922 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:27" (1/1) ... [2024-12-02 10:38:27,942 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-12-02 10:38:27,943 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:27" (1/1) ... [2024-12-02 10:38:27,943 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:27" (1/1) ... [2024-12-02 10:38:27,954 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:27" (1/1) ... [2024-12-02 10:38:27,956 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:27" (1/1) ... [2024-12-02 10:38:27,961 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:27" (1/1) ... [2024-12-02 10:38:27,963 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:27" (1/1) ... [2024-12-02 10:38:27,965 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:27" (1/1) ... [2024-12-02 10:38:27,969 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:38:27,970 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:38:27,970 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:38:27,970 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:38:27,971 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:27" (1/1) ... [2024-12-02 10:38:27,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:38:27,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:38:27,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:38:28,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:38:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:38:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 10:38:28,025 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 10:38:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 10:38:28,025 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 10:38:28,025 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-12-02 10:38:28,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-12-02 10:38:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-12-02 10:38:28,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-12-02 10:38:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 10:38:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 10:38:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 10:38:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 10:38:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 10:38:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 10:38:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 10:38:28,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:38:28,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:38:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 10:38:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 10:38:28,028 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 10:38:28,134 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:38:28,136 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:38:28,612 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 10:38:28,612 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:38:29,174 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:38:29,175 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-12-02 10:38:29,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:38:29 BoogieIcfgContainer [2024-12-02 10:38:29,175 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:38:29,177 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:38:29,177 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:38:29,181 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:38:29,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:38:27" (1/3) ... [2024-12-02 10:38:29,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5efb5065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:38:29, skipping insertion in model container [2024-12-02 10:38:29,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:38:27" (2/3) ... [2024-12-02 10:38:29,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5efb5065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:38:29, skipping insertion in model container [2024-12-02 10:38:29,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:38:29" (3/3) ... [2024-12-02 10:38:29,184 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt3.wvr.c [2024-12-02 10:38:29,197 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:38:29,199 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-buffer-mult-alt3.wvr.c that has 5 procedures, 77 locations, 1 initial locations, 6 loop locations, and 30 error locations. [2024-12-02 10:38:29,199 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 10:38:29,369 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-12-02 10:38:29,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 82 transitions, 192 flow [2024-12-02 10:38:29,462 INFO L124 PetriNetUnfolderBase]: 6/78 cut-off events. [2024-12-02 10:38:29,464 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-12-02 10:38:29,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 78 events. 6/78 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 267 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2024-12-02 10:38:29,469 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 82 transitions, 192 flow [2024-12-02 10:38:29,473 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 76 transitions, 173 flow [2024-12-02 10:38:29,497 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:38:29,510 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;@3d62aff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:38:29,510 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-12-02 10:38:29,515 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 10:38:29,515 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-12-02 10:38:29,515 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 10:38:29,515 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:38:29,516 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 10:38:29,516 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:38:29,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:38:29,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1092939, now seen corresponding path program 1 times [2024-12-02 10:38:29,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:38:29,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665558607] [2024-12-02 10:38:29,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:38:29,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:38:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:38:29,806 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 10:38:29,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:38:29,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665558607] [2024-12-02 10:38:29,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665558607] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:38:29,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:38:29,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:38:29,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473327522] [2024-12-02 10:38:29,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:38:29,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:38:29,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:38:29,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:38:29,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:38:29,870 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-12-02 10:38:29,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 76 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 10:38:29,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:38:29,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-12-02 10:38:29,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:38:37,451 INFO L124 PetriNetUnfolderBase]: 50181/66653 cut-off events. [2024-12-02 10:38:37,451 INFO L125 PetriNetUnfolderBase]: For 1504/1504 co-relation queries the response was YES. [2024-12-02 10:38:37,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130942 conditions, 66653 events. 50181/66653 cut-off events. For 1504/1504 co-relation queries the response was YES. Maximal size of possible extension queue 6940. Compared 483644 event pairs, 36482 based on Foata normal form. 2/29069 useless extension candidates. Maximal degree in co-relation 124360. Up to 62109 conditions per place. [2024-12-02 10:38:37,817 INFO L140 encePairwiseOnDemand]: 65/82 looper letters, 51 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2024-12-02 10:38:37,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 76 transitions, 289 flow [2024-12-02 10:38:37,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:38:37,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:38:37,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-12-02 10:38:37,831 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-12-02 10:38:37,833 INFO L175 Difference]: Start difference. First operand has 83 places, 76 transitions, 173 flow. Second operand 4 states and 156 transitions. [2024-12-02 10:38:37,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 76 transitions, 289 flow [2024-12-02 10:38:37,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 276 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-12-02 10:38:37,936 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 208 flow [2024-12-02 10:38:37,938 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2024-12-02 10:38:37,941 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, -7 predicate places. [2024-12-02 10:38:37,941 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 208 flow [2024-12-02 10:38:37,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 10:38:37,941 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:38:37,941 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-12-02 10:38:37,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 10:38:37,942 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:38:37,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:38:37,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1798869889, now seen corresponding path program 1 times [2024-12-02 10:38:37,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:38:37,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769095161] [2024-12-02 10:38:37,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:38:37,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:38:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:38:38,091 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 10:38:38,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:38:38,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769095161] [2024-12-02 10:38:38,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769095161] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:38:38,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579223620] [2024-12-02 10:38:38,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:38:38,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:38:38,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:38:38,094 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:38:38,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:38:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:38:38,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 10:38:38,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:38:38,258 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 10:38:38,258 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:38:38,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579223620] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:38:38,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:38:38,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-12-02 10:38:38,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088871715] [2024-12-02 10:38:38,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:38:38,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:38:38,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:38:38,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:38:38,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:38:38,284 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-12-02 10:38:38,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 10:38:38,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:38:38,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-12-02 10:38:38,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:38:44,751 INFO L124 PetriNetUnfolderBase]: 50181/66651 cut-off events. [2024-12-02 10:38:44,751 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2024-12-02 10:38:44,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130158 conditions, 66651 events. 50181/66651 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 6940. Compared 483391 event pairs, 36482 based on Foata normal form. 2/29070 useless extension candidates. Maximal degree in co-relation 130108. Up to 62099 conditions per place. [2024-12-02 10:38:45,075 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 44 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2024-12-02 10:38:45,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 74 transitions, 312 flow [2024-12-02 10:38:45,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:38:45,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 10:38:45,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-12-02 10:38:45,077 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3861788617886179 [2024-12-02 10:38:45,077 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 208 flow. Second operand 6 states and 190 transitions. [2024-12-02 10:38:45,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 74 transitions, 312 flow [2024-12-02 10:38:45,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 10:38:45,080 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 224 flow [2024-12-02 10:38:45,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2024-12-02 10:38:45,081 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, -4 predicate places. [2024-12-02 10:38:45,081 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 224 flow [2024-12-02 10:38:45,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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 10:38:45,081 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:38:45,081 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-12-02 10:38:45,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:38:45,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-12-02 10:38:45,282 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:38:45,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:38:45,283 INFO L85 PathProgramCache]: Analyzing trace with hash 69609420, now seen corresponding path program 1 times [2024-12-02 10:38:45,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:38:45,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320600636] [2024-12-02 10:38:45,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:38:45,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:38:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:38:45,389 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 10:38:45,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:38:45,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320600636] [2024-12-02 10:38:45,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320600636] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:38:45,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492352421] [2024-12-02 10:38:45,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:38:45,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:38:45,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:38:45,391 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:38:45,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 10:38:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:38:45,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 10:38:45,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:38:45,527 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 10:38:45,527 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:38:45,573 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 10:38:45,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492352421] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:38:45,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:38:45,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-12-02 10:38:45,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867685001] [2024-12-02 10:38:45,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:38:45,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 10:38:45,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:38:45,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 10:38:45,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-12-02 10:38:45,600 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-12-02 10:38:45,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 224 flow. Second operand has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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 10:38:45,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:38:45,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-12-02 10:38:45,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:38:51,809 INFO L124 PetriNetUnfolderBase]: 50187/66675 cut-off events. [2024-12-02 10:38:51,809 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2024-12-02 10:38:51,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130252 conditions, 66675 events. 50187/66675 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 6940. Compared 483477 event pairs, 36482 based on Foata normal form. 6/29097 useless extension candidates. Maximal degree in co-relation 130110. Up to 62110 conditions per place. [2024-12-02 10:38:52,146 INFO L140 encePairwiseOnDemand]: 73/82 looper letters, 49 selfloop transitions, 25 changer transitions 0/92 dead transitions. [2024-12-02 10:38:52,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 92 transitions, 486 flow [2024-12-02 10:38:52,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 10:38:52,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 10:38:52,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 300 transitions. [2024-12-02 10:38:52,150 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36585365853658536 [2024-12-02 10:38:52,150 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 224 flow. Second operand 10 states and 300 transitions. [2024-12-02 10:38:52,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 92 transitions, 486 flow [2024-12-02 10:38:52,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 428 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-12-02 10:38:52,153 INFO L231 Difference]: Finished difference. Result has 86 places, 92 transitions, 364 flow [2024-12-02 10:38:52,154 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=364, PETRI_PLACES=86, PETRI_TRANSITIONS=92} [2024-12-02 10:38:52,155 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2024-12-02 10:38:52,155 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 92 transitions, 364 flow [2024-12-02 10:38:52,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 23.083333333333332) internal successors, (277), 12 states have internal predecessors, (277), 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 10:38:52,155 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:38:52,155 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:38:52,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 10:38:52,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:38:52,356 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:38:52,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:38:52,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1667874545, now seen corresponding path program 1 times [2024-12-02 10:38:52,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:38:52,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585601693] [2024-12-02 10:38:52,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:38:52,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:38:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:38:52,440 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 10:38:52,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:38:52,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585601693] [2024-12-02 10:38:52,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585601693] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:38:52,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:38:52,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 10:38:52,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6365401] [2024-12-02 10:38:52,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:38:52,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:38:52,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:38:52,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:38:52,442 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:38:52,449 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 10:38:52,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 92 transitions, 364 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:38:52,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:38:52,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 10:38:52,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:38:59,283 INFO L124 PetriNetUnfolderBase]: 53011/71517 cut-off events. [2024-12-02 10:38:59,284 INFO L125 PetriNetUnfolderBase]: For 268/268 co-relation queries the response was YES. [2024-12-02 10:38:59,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140635 conditions, 71517 events. 53011/71517 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 6873. Compared 537263 event pairs, 9386 based on Foata normal form. 0/33650 useless extension candidates. Maximal degree in co-relation 140568. Up to 52310 conditions per place. [2024-12-02 10:38:59,631 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 105 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2024-12-02 10:38:59,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 127 transitions, 655 flow [2024-12-02 10:38:59,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:38:59,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:38:59,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-12-02 10:38:59,632 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6626016260162602 [2024-12-02 10:38:59,632 INFO L175 Difference]: Start difference. First operand has 86 places, 92 transitions, 364 flow. Second operand 3 states and 163 transitions. [2024-12-02 10:38:59,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 127 transitions, 655 flow [2024-12-02 10:38:59,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 127 transitions, 631 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-12-02 10:38:59,636 INFO L231 Difference]: Finished difference. Result has 87 places, 93 transitions, 354 flow [2024-12-02 10:38:59,636 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=87, PETRI_TRANSITIONS=93} [2024-12-02 10:38:59,637 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 4 predicate places. [2024-12-02 10:38:59,637 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 93 transitions, 354 flow [2024-12-02 10:38:59,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:38:59,637 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:38:59,638 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:38:59,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 10:38:59,638 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:38:59,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:38:59,638 INFO L85 PathProgramCache]: Analyzing trace with hash 164504514, now seen corresponding path program 1 times [2024-12-02 10:38:59,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:38:59,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296808395] [2024-12-02 10:38:59,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:38:59,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:38:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:38:59,714 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 10:38:59,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:38:59,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296808395] [2024-12-02 10:38:59,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296808395] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:38:59,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:38:59,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 10:38:59,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858721175] [2024-12-02 10:38:59,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:38:59,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:38:59,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:38:59,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:38:59,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:38:59,722 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 10:38:59,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 93 transitions, 354 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:38:59,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:38:59,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 10:38:59,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:39:05,206 INFO L124 PetriNetUnfolderBase]: 47999/65157 cut-off events. [2024-12-02 10:39:05,206 INFO L125 PetriNetUnfolderBase]: For 3357/3357 co-relation queries the response was YES. [2024-12-02 10:39:05,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134586 conditions, 65157 events. 47999/65157 cut-off events. For 3357/3357 co-relation queries the response was YES. Maximal size of possible extension queue 6064. Compared 504030 event pairs, 38297 based on Foata normal form. 0/30398 useless extension candidates. Maximal degree in co-relation 134520. Up to 60668 conditions per place. [2024-12-02 10:39:05,522 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 71 selfloop transitions, 1 changer transitions 0/92 dead transitions. [2024-12-02 10:39:05,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 92 transitions, 496 flow [2024-12-02 10:39:05,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:39:05,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:39:05,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-12-02 10:39:05,523 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2024-12-02 10:39:05,523 INFO L175 Difference]: Start difference. First operand has 87 places, 93 transitions, 354 flow. Second operand 3 states and 126 transitions. [2024-12-02 10:39:05,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 92 transitions, 496 flow [2024-12-02 10:39:05,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 92 transitions, 494 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 10:39:05,554 INFO L231 Difference]: Finished difference. Result has 87 places, 92 transitions, 352 flow [2024-12-02 10:39:05,555 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=352, PETRI_PLACES=87, PETRI_TRANSITIONS=92} [2024-12-02 10:39:05,555 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 4 predicate places. [2024-12-02 10:39:05,555 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 92 transitions, 352 flow [2024-12-02 10:39:05,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:39:05,556 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:39:05,556 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:39:05,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 10:39:05,556 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:39:05,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:39:05,556 INFO L85 PathProgramCache]: Analyzing trace with hash 164504515, now seen corresponding path program 1 times [2024-12-02 10:39:05,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:39:05,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922847159] [2024-12-02 10:39:05,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:05,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:39:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:05,715 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 10:39:05,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:39:05,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922847159] [2024-12-02 10:39:05,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922847159] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:39:05,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:39:05,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:39:05,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008030718] [2024-12-02 10:39:05,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:39:05,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:39:05,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:39:05,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:39:05,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:39:05,726 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 10:39:05,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 92 transitions, 352 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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 10:39:05,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:39:05,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 10:39:05,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:39:12,797 INFO L124 PetriNetUnfolderBase]: 50633/67903 cut-off events. [2024-12-02 10:39:12,797 INFO L125 PetriNetUnfolderBase]: For 3427/3427 co-relation queries the response was YES. [2024-12-02 10:39:12,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139570 conditions, 67903 events. 50633/67903 cut-off events. For 3427/3427 co-relation queries the response was YES. Maximal size of possible extension queue 5717. Compared 514901 event pairs, 40357 based on Foata normal form. 787/32008 useless extension candidates. Maximal degree in co-relation 139555. Up to 60666 conditions per place. [2024-12-02 10:39:13,110 INFO L140 encePairwiseOnDemand]: 70/82 looper letters, 111 selfloop transitions, 5 changer transitions 0/136 dead transitions. [2024-12-02 10:39:13,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 136 transitions, 743 flow [2024-12-02 10:39:13,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:39:13,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 10:39:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 222 transitions. [2024-12-02 10:39:13,111 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5414634146341464 [2024-12-02 10:39:13,111 INFO L175 Difference]: Start difference. First operand has 87 places, 92 transitions, 352 flow. Second operand 5 states and 222 transitions. [2024-12-02 10:39:13,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 136 transitions, 743 flow [2024-12-02 10:39:13,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 136 transitions, 742 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 10:39:13,144 INFO L231 Difference]: Finished difference. Result has 92 places, 94 transitions, 396 flow [2024-12-02 10:39:13,144 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=396, PETRI_PLACES=92, PETRI_TRANSITIONS=94} [2024-12-02 10:39:13,145 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 9 predicate places. [2024-12-02 10:39:13,145 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 94 transitions, 396 flow [2024-12-02 10:39:13,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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 10:39:13,145 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:39:13,145 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:39:13,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 10:39:13,146 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:39:13,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:39:13,146 INFO L85 PathProgramCache]: Analyzing trace with hash 309017049, now seen corresponding path program 1 times [2024-12-02 10:39:13,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:39:13,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167334484] [2024-12-02 10:39:13,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:13,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:39:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:13,184 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 10:39:13,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:39:13,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167334484] [2024-12-02 10:39:13,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167334484] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:39:13,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:39:13,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 10:39:13,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950164721] [2024-12-02 10:39:13,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:39:13,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:39:13,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:39:13,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:39:13,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:39:13,186 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 10:39:13,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 94 transitions, 396 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 10:39:13,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:39:13,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 10:39:13,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:39:18,911 INFO L124 PetriNetUnfolderBase]: 44622/61617 cut-off events. [2024-12-02 10:39:18,912 INFO L125 PetriNetUnfolderBase]: For 6975/6975 co-relation queries the response was YES. [2024-12-02 10:39:19,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135529 conditions, 61617 events. 44622/61617 cut-off events. For 6975/6975 co-relation queries the response was YES. Maximal size of possible extension queue 5395. Compared 484090 event pairs, 36211 based on Foata normal form. 0/30396 useless extension candidates. Maximal degree in co-relation 135511. Up to 57143 conditions per place. [2024-12-02 10:39:19,309 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 72 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2024-12-02 10:39:19,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 93 transitions, 540 flow [2024-12-02 10:39:19,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:39:19,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:39:19,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2024-12-02 10:39:19,311 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.508130081300813 [2024-12-02 10:39:19,311 INFO L175 Difference]: Start difference. First operand has 92 places, 94 transitions, 396 flow. Second operand 3 states and 125 transitions. [2024-12-02 10:39:19,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 93 transitions, 540 flow [2024-12-02 10:39:19,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 93 transitions, 536 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-12-02 10:39:19,409 INFO L231 Difference]: Finished difference. Result has 92 places, 93 transitions, 392 flow [2024-12-02 10:39:19,409 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=392, PETRI_PLACES=92, PETRI_TRANSITIONS=93} [2024-12-02 10:39:19,410 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 9 predicate places. [2024-12-02 10:39:19,410 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 93 transitions, 392 flow [2024-12-02 10:39:19,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 10:39:19,410 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:39:19,410 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:39:19,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 10:39:19,411 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:39:19,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:39:19,411 INFO L85 PathProgramCache]: Analyzing trace with hash 309017050, now seen corresponding path program 1 times [2024-12-02 10:39:19,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:39:19,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837134703] [2024-12-02 10:39:19,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:19,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:39:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:19,466 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 10:39:19,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:39:19,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837134703] [2024-12-02 10:39:19,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837134703] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:39:19,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:39:19,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:39:19,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430501470] [2024-12-02 10:39:19,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:39:19,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:39:19,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:39:19,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:39:19,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:39:19,468 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 10:39:19,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 392 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 10:39:19,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:39:19,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 10:39:19,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:39:24,971 INFO L124 PetriNetUnfolderBase]: 38921/54137 cut-off events. [2024-12-02 10:39:24,971 INFO L125 PetriNetUnfolderBase]: For 6245/6245 co-relation queries the response was YES. [2024-12-02 10:39:25,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119154 conditions, 54137 events. 38921/54137 cut-off events. For 6245/6245 co-relation queries the response was YES. Maximal size of possible extension queue 4788. Compared 424668 event pairs, 32065 based on Foata normal form. 0/28120 useless extension candidates. Maximal degree in co-relation 119135. Up to 50049 conditions per place. [2024-12-02 10:39:25,282 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 66 selfloop transitions, 6 changer transitions 0/92 dead transitions. [2024-12-02 10:39:25,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 92 transitions, 534 flow [2024-12-02 10:39:25,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:39:25,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:39:25,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-12-02 10:39:25,284 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5040650406504065 [2024-12-02 10:39:25,284 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 392 flow. Second operand 3 states and 124 transitions. [2024-12-02 10:39:25,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 92 transitions, 534 flow [2024-12-02 10:39:25,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 92 transitions, 523 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 10:39:25,390 INFO L231 Difference]: Finished difference. Result has 91 places, 92 transitions, 391 flow [2024-12-02 10:39:25,391 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=391, PETRI_PLACES=91, PETRI_TRANSITIONS=92} [2024-12-02 10:39:25,391 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 8 predicate places. [2024-12-02 10:39:25,391 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 92 transitions, 391 flow [2024-12-02 10:39:25,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 10:39:25,391 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:39:25,391 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:39:25,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 10:39:25,391 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:39:25,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:39:25,392 INFO L85 PathProgramCache]: Analyzing trace with hash 309017051, now seen corresponding path program 1 times [2024-12-02 10:39:25,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:39:25,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787198181] [2024-12-02 10:39:25,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:25,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:39:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:25,452 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 10:39:25,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:39:25,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787198181] [2024-12-02 10:39:25,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787198181] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:39:25,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:39:25,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 10:39:25,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519595281] [2024-12-02 10:39:25,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:39:25,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:39:25,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:39:25,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:39:25,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:39:25,460 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 10:39:25,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 92 transitions, 391 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 10:39:25,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:39:25,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 10:39:25,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:39:30,591 INFO L124 PetriNetUnfolderBase]: 39258/55739 cut-off events. [2024-12-02 10:39:30,591 INFO L125 PetriNetUnfolderBase]: For 7800/7800 co-relation queries the response was YES. [2024-12-02 10:39:30,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124684 conditions, 55739 events. 39258/55739 cut-off events. For 7800/7800 co-relation queries the response was YES. Maximal size of possible extension queue 4940. Compared 461381 event pairs, 7189 based on Foata normal form. 0/31416 useless extension candidates. Maximal degree in co-relation 124666. Up to 41584 conditions per place. [2024-12-02 10:39:30,886 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 101 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2024-12-02 10:39:30,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 123 transitions, 687 flow [2024-12-02 10:39:30,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:39:30,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:39:30,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-12-02 10:39:30,887 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6300813008130082 [2024-12-02 10:39:30,887 INFO L175 Difference]: Start difference. First operand has 91 places, 92 transitions, 391 flow. Second operand 3 states and 155 transitions. [2024-12-02 10:39:30,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 123 transitions, 687 flow [2024-12-02 10:39:30,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 123 transitions, 681 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 10:39:30,943 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 399 flow [2024-12-02 10:39:30,944 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=399, PETRI_PLACES=93, PETRI_TRANSITIONS=93} [2024-12-02 10:39:30,944 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 10 predicate places. [2024-12-02 10:39:30,944 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 399 flow [2024-12-02 10:39:30,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 10:39:30,944 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:39:30,944 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:39:30,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 10:39:30,945 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:39:30,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:39:30,945 INFO L85 PathProgramCache]: Analyzing trace with hash 989595174, now seen corresponding path program 1 times [2024-12-02 10:39:30,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:39:30,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048174440] [2024-12-02 10:39:30,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:30,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:39:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:31,090 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 10:39:31,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:39:31,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048174440] [2024-12-02 10:39:31,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048174440] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:39:31,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:39:31,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:39:31,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488756594] [2024-12-02 10:39:31,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:39:31,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:39:31,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:39:31,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:39:31,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:39:31,101 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 10:39:31,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 93 transitions, 399 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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 10:39:31,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:39:31,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 10:39:31,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:39:36,811 INFO L124 PetriNetUnfolderBase]: 40524/58075 cut-off events. [2024-12-02 10:39:36,811 INFO L125 PetriNetUnfolderBase]: For 10653/10653 co-relation queries the response was YES. [2024-12-02 10:39:36,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137645 conditions, 58075 events. 40524/58075 cut-off events. For 10653/10653 co-relation queries the response was YES. Maximal size of possible extension queue 4789. Compared 491953 event pairs, 34385 based on Foata normal form. 726/33292 useless extension candidates. Maximal degree in co-relation 137625. Up to 46388 conditions per place. [2024-12-02 10:39:37,160 INFO L140 encePairwiseOnDemand]: 71/82 looper letters, 110 selfloop transitions, 9 changer transitions 2/141 dead transitions. [2024-12-02 10:39:37,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 141 transitions, 793 flow [2024-12-02 10:39:37,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:39:37,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 10:39:37,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 237 transitions. [2024-12-02 10:39:37,161 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5780487804878048 [2024-12-02 10:39:37,161 INFO L175 Difference]: Start difference. First operand has 93 places, 93 transitions, 399 flow. Second operand 5 states and 237 transitions. [2024-12-02 10:39:37,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 141 transitions, 793 flow [2024-12-02 10:39:37,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 141 transitions, 791 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 10:39:37,260 INFO L231 Difference]: Finished difference. Result has 98 places, 92 transitions, 434 flow [2024-12-02 10:39:37,260 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=434, PETRI_PLACES=98, PETRI_TRANSITIONS=92} [2024-12-02 10:39:37,261 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 15 predicate places. [2024-12-02 10:39:37,261 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 92 transitions, 434 flow [2024-12-02 10:39:37,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 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 10:39:37,261 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:39:37,261 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:39:37,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 10:39:37,261 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:39:37,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:39:37,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1123920887, now seen corresponding path program 1 times [2024-12-02 10:39:37,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:39:37,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287863751] [2024-12-02 10:39:37,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:37,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:39:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:37,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:39:37,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:39:37,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287863751] [2024-12-02 10:39:37,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287863751] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:39:37,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305905677] [2024-12-02 10:39:37,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:37,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:39:37,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:39:37,445 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:39:37,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 10:39:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:37,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 10:39:37,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:39:37,609 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 10:39:37,609 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:39:37,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305905677] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:39:37,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:39:37,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 7 [2024-12-02 10:39:37,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892972788] [2024-12-02 10:39:37,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:39:37,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:39:37,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:39:37,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:39:37,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:39:37,616 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 10:39:37,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 92 transitions, 434 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 10:39:37,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:39:37,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 10:39:37,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:39:43,128 INFO L124 PetriNetUnfolderBase]: 31715/44459 cut-off events. [2024-12-02 10:39:43,128 INFO L125 PetriNetUnfolderBase]: For 16973/17037 co-relation queries the response was YES. [2024-12-02 10:39:43,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120452 conditions, 44459 events. 31715/44459 cut-off events. For 16973/17037 co-relation queries the response was YES. Maximal size of possible extension queue 3677. Compared 342104 event pairs, 18293 based on Foata normal form. 0/27105 useless extension candidates. Maximal degree in co-relation 120430. Up to 26262 conditions per place. [2024-12-02 10:39:43,429 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 92 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2024-12-02 10:39:43,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 118 transitions, 731 flow [2024-12-02 10:39:43,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:39:43,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:39:43,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-12-02 10:39:43,430 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5396341463414634 [2024-12-02 10:39:43,430 INFO L175 Difference]: Start difference. First operand has 98 places, 92 transitions, 434 flow. Second operand 4 states and 177 transitions. [2024-12-02 10:39:43,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 118 transitions, 731 flow [2024-12-02 10:39:43,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 118 transitions, 722 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 10:39:43,465 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 432 flow [2024-12-02 10:39:43,466 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=432, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2024-12-02 10:39:43,466 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 15 predicate places. [2024-12-02 10:39:43,466 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 432 flow [2024-12-02 10:39:43,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 10:39:43,466 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:39:43,466 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:39:43,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 10:39:43,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:39:43,667 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:39:43,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:39:43,667 INFO L85 PathProgramCache]: Analyzing trace with hash -261107204, now seen corresponding path program 1 times [2024-12-02 10:39:43,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:39:43,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575424939] [2024-12-02 10:39:43,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:43,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:39:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:43,719 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 10:39:43,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:39:43,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575424939] [2024-12-02 10:39:43,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575424939] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:39:43,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:39:43,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 10:39:43,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782363170] [2024-12-02 10:39:43,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:39:43,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:39:43,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:39:43,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:39:43,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:39:43,724 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 10:39:43,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 432 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 10:39:43,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:39:43,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 10:39:43,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:39:47,939 INFO L124 PetriNetUnfolderBase]: 29145/42015 cut-off events. [2024-12-02 10:39:47,939 INFO L125 PetriNetUnfolderBase]: For 20654/20654 co-relation queries the response was YES. [2024-12-02 10:39:48,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117294 conditions, 42015 events. 29145/42015 cut-off events. For 20654/20654 co-relation queries the response was YES. Maximal size of possible extension queue 3271. Compared 345104 event pairs, 26743 based on Foata normal form. 1100/26244 useless extension candidates. Maximal degree in co-relation 117271. Up to 38844 conditions per place. [2024-12-02 10:39:48,237 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 68 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2024-12-02 10:39:48,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 89 transitions, 566 flow [2024-12-02 10:39:48,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:39:48,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:39:48,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-12-02 10:39:48,238 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.491869918699187 [2024-12-02 10:39:48,238 INFO L175 Difference]: Start difference. First operand has 98 places, 90 transitions, 432 flow. Second operand 3 states and 121 transitions. [2024-12-02 10:39:48,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 89 transitions, 566 flow [2024-12-02 10:39:48,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 89 transitions, 542 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-12-02 10:39:48,368 INFO L231 Difference]: Finished difference. Result has 94 places, 89 transitions, 406 flow [2024-12-02 10:39:48,368 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=406, PETRI_PLACES=94, PETRI_TRANSITIONS=89} [2024-12-02 10:39:48,368 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 11 predicate places. [2024-12-02 10:39:48,368 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 89 transitions, 406 flow [2024-12-02 10:39:48,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 10:39:48,368 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:39:48,369 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:39:48,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 10:39:48,369 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:39:48,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:39:48,369 INFO L85 PathProgramCache]: Analyzing trace with hash -261107203, now seen corresponding path program 1 times [2024-12-02 10:39:48,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:39:48,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212020323] [2024-12-02 10:39:48,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:48,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:39:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:48,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:39:48,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:39:48,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212020323] [2024-12-02 10:39:48,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212020323] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:39:48,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378172727] [2024-12-02 10:39:48,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:48,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:39:48,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:39:48,543 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:39:48,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 10:39:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:48,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 10:39:48,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:39:48,725 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 25 treesize of output 9 [2024-12-02 10:39:48,740 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 10:39:48,740 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:39:48,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378172727] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:39:48,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:39:48,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2024-12-02 10:39:48,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29743034] [2024-12-02 10:39:48,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:39:48,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:39:48,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:39:48,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:39:48,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:39:48,747 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 10:39:48,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 89 transitions, 406 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 10:39:48,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:39:48,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 10:39:48,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:39:52,074 INFO L124 PetriNetUnfolderBase]: 23019/32169 cut-off events. [2024-12-02 10:39:52,074 INFO L125 PetriNetUnfolderBase]: For 9078/9078 co-relation queries the response was YES. [2024-12-02 10:39:52,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82840 conditions, 32169 events. 23019/32169 cut-off events. For 9078/9078 co-relation queries the response was YES. Maximal size of possible extension queue 2347. Compared 234976 event pairs, 12353 based on Foata normal form. 0/19961 useless extension candidates. Maximal degree in co-relation 82818. Up to 17860 conditions per place. [2024-12-02 10:39:52,298 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 85 selfloop transitions, 6 changer transitions 0/111 dead transitions. [2024-12-02 10:39:52,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 111 transitions, 664 flow [2024-12-02 10:39:52,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:39:52,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:39:52,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2024-12-02 10:39:52,300 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5182926829268293 [2024-12-02 10:39:52,300 INFO L175 Difference]: Start difference. First operand has 94 places, 89 transitions, 406 flow. Second operand 4 states and 170 transitions. [2024-12-02 10:39:52,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 111 transitions, 664 flow [2024-12-02 10:39:52,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 111 transitions, 663 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 10:39:52,315 INFO L231 Difference]: Finished difference. Result has 94 places, 87 transitions, 411 flow [2024-12-02 10:39:52,315 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=411, PETRI_PLACES=94, PETRI_TRANSITIONS=87} [2024-12-02 10:39:52,316 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 11 predicate places. [2024-12-02 10:39:52,316 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 87 transitions, 411 flow [2024-12-02 10:39:52,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 10:39:52,316 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:39:52,316 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:39:52,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 10:39:52,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:39:52,517 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:39:52,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:39:52,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1698432096, now seen corresponding path program 1 times [2024-12-02 10:39:52,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:39:52,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278993651] [2024-12-02 10:39:52,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:52,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:39:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:52,575 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 10:39:52,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:39:52,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278993651] [2024-12-02 10:39:52,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278993651] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:39:52,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:39:52,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:39:52,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032290093] [2024-12-02 10:39:52,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:39:52,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:39:52,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:39:52,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:39:52,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:39:52,580 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 10:39:52,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 87 transitions, 411 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 10:39:52,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:39:52,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 10:39:52,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:39:55,734 INFO L124 PetriNetUnfolderBase]: 22774/31690 cut-off events. [2024-12-02 10:39:55,734 INFO L125 PetriNetUnfolderBase]: For 12730/12730 co-relation queries the response was YES. [2024-12-02 10:39:55,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83984 conditions, 31690 events. 22774/31690 cut-off events. For 12730/12730 co-relation queries the response was YES. Maximal size of possible extension queue 2064. Compared 212115 event pairs, 6167 based on Foata normal form. 405/19909 useless extension candidates. Maximal degree in co-relation 83961. Up to 24178 conditions per place. [2024-12-02 10:39:55,945 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 86 selfloop transitions, 6 changer transitions 0/112 dead transitions. [2024-12-02 10:39:55,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 112 transitions, 682 flow [2024-12-02 10:39:55,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:39:55,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:39:55,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 148 transitions. [2024-12-02 10:39:55,946 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6016260162601627 [2024-12-02 10:39:55,946 INFO L175 Difference]: Start difference. First operand has 94 places, 87 transitions, 411 flow. Second operand 3 states and 148 transitions. [2024-12-02 10:39:55,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 112 transitions, 682 flow [2024-12-02 10:39:55,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 112 transitions, 660 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 10:39:55,995 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 431 flow [2024-12-02 10:39:55,996 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=431, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2024-12-02 10:39:55,996 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 11 predicate places. [2024-12-02 10:39:55,996 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 431 flow [2024-12-02 10:39:55,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 10:39:55,996 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:39:55,996 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:39:55,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 10:39:55,996 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:39:55,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:39:55,997 INFO L85 PathProgramCache]: Analyzing trace with hash -836761245, now seen corresponding path program 1 times [2024-12-02 10:39:55,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:39:55,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758971815] [2024-12-02 10:39:55,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:55,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:39:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:56,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:39:56,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:39:56,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758971815] [2024-12-02 10:39:56,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758971815] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:39:56,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166189903] [2024-12-02 10:39:56,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:56,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:39:56,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:39:56,059 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:39:56,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 10:39:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:56,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 10:39:56,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:39:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:39:56,211 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:39:56,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:39:56,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166189903] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:39:56,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:39:56,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-12-02 10:39:56,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757979268] [2024-12-02 10:39:56,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:39:56,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:39:56,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:39:56,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:39:56,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:39:56,267 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 10:39:56,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 431 flow. Second operand has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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 10:39:56,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:39:56,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 10:39:56,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:40:06,063 INFO L124 PetriNetUnfolderBase]: 57949/79969 cut-off events. [2024-12-02 10:40:06,064 INFO L125 PetriNetUnfolderBase]: For 23574/23574 co-relation queries the response was YES. [2024-12-02 10:40:06,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222691 conditions, 79969 events. 57949/79969 cut-off events. For 23574/23574 co-relation queries the response was YES. Maximal size of possible extension queue 3748. Compared 581816 event pairs, 3625 based on Foata normal form. 0/49569 useless extension candidates. Maximal degree in co-relation 222668. Up to 21821 conditions per place. [2024-12-02 10:40:06,551 INFO L140 encePairwiseOnDemand]: 78/82 looper letters, 203 selfloop transitions, 9 changer transitions 0/232 dead transitions. [2024-12-02 10:40:06,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 232 transitions, 1371 flow [2024-12-02 10:40:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:40:06,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 10:40:06,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 366 transitions. [2024-12-02 10:40:06,553 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6376306620209059 [2024-12-02 10:40:06,553 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 431 flow. Second operand 7 states and 366 transitions. [2024-12-02 10:40:06,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 232 transitions, 1371 flow [2024-12-02 10:40:06,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 232 transitions, 1365 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 10:40:06,563 INFO L231 Difference]: Finished difference. Result has 102 places, 94 transitions, 484 flow [2024-12-02 10:40:06,563 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=484, PETRI_PLACES=102, PETRI_TRANSITIONS=94} [2024-12-02 10:40:06,563 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 19 predicate places. [2024-12-02 10:40:06,563 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 94 transitions, 484 flow [2024-12-02 10:40:06,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 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 10:40:06,564 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:40:06,564 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:40:06,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 10:40:06,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 10:40:06,764 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:40:06,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:40:06,765 INFO L85 PathProgramCache]: Analyzing trace with hash -836761246, now seen corresponding path program 1 times [2024-12-02 10:40:06,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:40:06,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832513568] [2024-12-02 10:40:06,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:40:06,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:40:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:40:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:40:06,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:40:06,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832513568] [2024-12-02 10:40:06,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832513568] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:40:06,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113189721] [2024-12-02 10:40:06,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:40:06,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:40:06,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:40:06,823 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:40:06,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 10:40:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:40:06,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 10:40:06,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:40:06,969 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 10:40:06,969 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:40:06,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113189721] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:40:06,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:40:06,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2024-12-02 10:40:06,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004324592] [2024-12-02 10:40:06,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:40:06,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:40:06,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:40:06,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:40:06,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:40:06,983 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 10:40:06,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 94 transitions, 484 flow. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 10:40:06,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:40:06,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 10:40:06,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:40:14,670 INFO L124 PetriNetUnfolderBase]: 51814/71704 cut-off events. [2024-12-02 10:40:14,670 INFO L125 PetriNetUnfolderBase]: For 52394/52394 co-relation queries the response was YES. [2024-12-02 10:40:14,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209068 conditions, 71704 events. 51814/71704 cut-off events. For 52394/52394 co-relation queries the response was YES. Maximal size of possible extension queue 3415. Compared 501276 event pairs, 10860 based on Foata normal form. 1780/48987 useless extension candidates. Maximal degree in co-relation 209041. Up to 61900 conditions per place. [2024-12-02 10:40:15,174 INFO L140 encePairwiseOnDemand]: 79/82 looper letters, 92 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2024-12-02 10:40:15,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 114 transitions, 720 flow [2024-12-02 10:40:15,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:40:15,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:40:15,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-12-02 10:40:15,175 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2024-12-02 10:40:15,175 INFO L175 Difference]: Start difference. First operand has 102 places, 94 transitions, 484 flow. Second operand 4 states and 168 transitions. [2024-12-02 10:40:15,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 114 transitions, 720 flow [2024-12-02 10:40:15,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 114 transitions, 712 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-12-02 10:40:15,299 INFO L231 Difference]: Finished difference. Result has 102 places, 90 transitions, 453 flow [2024-12-02 10:40:15,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=453, PETRI_PLACES=102, PETRI_TRANSITIONS=90} [2024-12-02 10:40:15,300 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 19 predicate places. [2024-12-02 10:40:15,300 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 90 transitions, 453 flow [2024-12-02 10:40:15,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 10:40:15,300 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:40:15,300 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2024-12-02 10:40:15,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 10:40:15,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 10:40:15,500 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:40:15,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:40:15,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1242298752, now seen corresponding path program 2 times [2024-12-02 10:40:15,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:40:15,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542221029] [2024-12-02 10:40:15,501 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:40:15,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:40:15,512 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 10:40:15,512 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:40:15,541 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 10:40:15,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:40:15,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542221029] [2024-12-02 10:40:15,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542221029] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:40:15,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529583865] [2024-12-02 10:40:15,541 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 10:40:15,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:40:15,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:40:15,543 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:40:15,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 10:40:15,651 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 10:40:15,651 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 10:40:15,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 10:40:15,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:40:15,681 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 10:40:15,681 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:40:15,709 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 10:40:15,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529583865] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:40:15,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:40:15,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2024-12-02 10:40:15,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005880882] [2024-12-02 10:40:15,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:40:15,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:40:15,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:40:15,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:40:15,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:40:15,722 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-12-02 10:40:15,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 90 transitions, 453 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 10:40:15,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:40:15,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-12-02 10:40:15,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:40:24,346 INFO L124 PetriNetUnfolderBase]: 51853/72106 cut-off events. [2024-12-02 10:40:24,346 INFO L125 PetriNetUnfolderBase]: For 40961/41011 co-relation queries the response was YES. [2024-12-02 10:40:24,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207069 conditions, 72106 events. 51853/72106 cut-off events. For 40961/41011 co-relation queries the response was YES. Maximal size of possible extension queue 3469. Compared 511070 event pairs, 38542 based on Foata normal form. 1/47431 useless extension candidates. Maximal degree in co-relation 207041. Up to 66075 conditions per place. [2024-12-02 10:40:24,821 INFO L140 encePairwiseOnDemand]: 77/82 looper letters, 55 selfloop transitions, 16 changer transitions 0/89 dead transitions. [2024-12-02 10:40:24,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 89 transitions, 585 flow [2024-12-02 10:40:24,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:40:24,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:40:24,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-12-02 10:40:24,823 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3932926829268293 [2024-12-02 10:40:24,823 INFO L175 Difference]: Start difference. First operand has 102 places, 90 transitions, 453 flow. Second operand 4 states and 129 transitions. [2024-12-02 10:40:24,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 89 transitions, 585 flow [2024-12-02 10:40:24,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 89 transitions, 582 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 10:40:24,884 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 472 flow [2024-12-02 10:40:24,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=472, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2024-12-02 10:40:24,885 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 19 predicate places. [2024-12-02 10:40:24,885 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 472 flow [2024-12-02 10:40:24,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 10:40:24,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:40:24,885 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1] [2024-12-02 10:40:24,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 10:40:25,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 10:40:25,086 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:40:25,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:40:25,086 INFO L85 PathProgramCache]: Analyzing trace with hash -411537122, now seen corresponding path program 1 times [2024-12-02 10:40:25,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:40:25,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977070915] [2024-12-02 10:40:25,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:40:25,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:40:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:40:25,222 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 10:40:25,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:40:25,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977070915] [2024-12-02 10:40:25,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977070915] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:40:25,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344205138] [2024-12-02 10:40:25,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:40:25,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:40:25,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:40:25,224 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:40:25,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 10:40:25,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:40:25,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 10:40:25,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:40:25,380 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 10:40:25,380 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:40:25,516 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 10:40:25,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344205138] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:40:25,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:40:25,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2024-12-02 10:40:25,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322416451] [2024-12-02 10:40:25,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:40:25,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 10:40:25,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:40:25,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 10:40:25,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2024-12-02 10:40:25,556 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-12-02 10:40:25,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 472 flow. Second operand has 24 states, 24 states have (on average 23.083333333333332) internal successors, (554), 24 states have internal predecessors, (554), 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 10:40:25,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:40:25,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-12-02 10:40:25,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:40:34,762 INFO L124 PetriNetUnfolderBase]: 51871/72178 cut-off events. [2024-12-02 10:40:34,763 INFO L125 PetriNetUnfolderBase]: For 40139/40189 co-relation queries the response was YES. [2024-12-02 10:40:35,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207366 conditions, 72178 events. 51871/72178 cut-off events. For 40139/40189 co-relation queries the response was YES. Maximal size of possible extension queue 3470. Compared 512082 event pairs, 38542 based on Foata normal form. 12/47508 useless extension candidates. Maximal degree in co-relation 207338. Up to 66071 conditions per place. [2024-12-02 10:40:35,478 INFO L140 encePairwiseOnDemand]: 74/82 looper letters, 45 selfloop transitions, 62 changer transitions 0/125 dead transitions. [2024-12-02 10:40:35,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 125 transitions, 974 flow [2024-12-02 10:40:35,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 10:40:35,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-12-02 10:40:35,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 590 transitions. [2024-12-02 10:40:35,480 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3270509977827051 [2024-12-02 10:40:35,480 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 472 flow. Second operand 22 states and 590 transitions. [2024-12-02 10:40:35,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 125 transitions, 974 flow [2024-12-02 10:40:35,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 125 transitions, 906 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 10:40:35,567 INFO L231 Difference]: Finished difference. Result has 126 places, 125 transitions, 862 flow [2024-12-02 10:40:35,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=862, PETRI_PLACES=126, PETRI_TRANSITIONS=125} [2024-12-02 10:40:35,568 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 43 predicate places. [2024-12-02 10:40:35,568 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 125 transitions, 862 flow [2024-12-02 10:40:35,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 23.083333333333332) internal successors, (554), 24 states have internal predecessors, (554), 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 10:40:35,568 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:40:35,568 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 10:40:35,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 10:40:35,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 10:40:35,769 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:40:35,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:40:35,769 INFO L85 PathProgramCache]: Analyzing trace with hash -307520728, now seen corresponding path program 1 times [2024-12-02 10:40:35,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:40:35,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174982621] [2024-12-02 10:40:35,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:40:35,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:40:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:40:35,820 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 10:40:35,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:40:35,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174982621] [2024-12-02 10:40:35,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174982621] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:40:35,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:40:35,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:40:35,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771199181] [2024-12-02 10:40:35,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:40:35,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:40:35,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:40:35,821 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:40:35,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:40:35,826 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 10:40:35,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 125 transitions, 862 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 10:40:35,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:40:35,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 10:40:35,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:40:44,626 INFO L124 PetriNetUnfolderBase]: 51688/69455 cut-off events. [2024-12-02 10:40:44,626 INFO L125 PetriNetUnfolderBase]: For 37110/37160 co-relation queries the response was YES. [2024-12-02 10:40:44,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198228 conditions, 69455 events. 51688/69455 cut-off events. For 37110/37160 co-relation queries the response was YES. Maximal size of possible extension queue 2931. Compared 433312 event pairs, 12150 based on Foata normal form. 599/44747 useless extension candidates. Maximal degree in co-relation 198194. Up to 50533 conditions per place. [2024-12-02 10:40:45,241 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 119 selfloop transitions, 12 changer transitions 1/151 dead transitions. [2024-12-02 10:40:45,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 151 transitions, 1238 flow [2024-12-02 10:40:45,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:40:45,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:40:45,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 144 transitions. [2024-12-02 10:40:45,243 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2024-12-02 10:40:45,243 INFO L175 Difference]: Start difference. First operand has 126 places, 125 transitions, 862 flow. Second operand 3 states and 144 transitions. [2024-12-02 10:40:45,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 151 transitions, 1238 flow [2024-12-02 10:40:45,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 151 transitions, 1080 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-12-02 10:40:45,441 INFO L231 Difference]: Finished difference. Result has 120 places, 126 transitions, 754 flow [2024-12-02 10:40:45,442 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=754, PETRI_PLACES=120, PETRI_TRANSITIONS=126} [2024-12-02 10:40:45,442 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 37 predicate places. [2024-12-02 10:40:45,442 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 126 transitions, 754 flow [2024-12-02 10:40:45,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 10:40:45,442 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:40:45,442 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:40:45,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 10:40:45,442 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:40:45,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:40:45,443 INFO L85 PathProgramCache]: Analyzing trace with hash -457764917, now seen corresponding path program 1 times [2024-12-02 10:40:45,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:40:45,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126953526] [2024-12-02 10:40:45,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:40:45,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:40:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:40:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 10:40:45,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:40:45,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126953526] [2024-12-02 10:40:45,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126953526] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:40:45,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:40:45,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:40:45,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941593735] [2024-12-02 10:40:45,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:40:45,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:40:45,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:40:45,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:40:45,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:40:45,506 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 10:40:45,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 126 transitions, 754 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 10:40:45,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:40:45,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 10:40:45,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:40:53,233 INFO L124 PetriNetUnfolderBase]: 43706/59209 cut-off events. [2024-12-02 10:40:53,233 INFO L125 PetriNetUnfolderBase]: For 35325/35548 co-relation queries the response was YES. [2024-12-02 10:40:53,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179963 conditions, 59209 events. 43706/59209 cut-off events. For 35325/35548 co-relation queries the response was YES. Maximal size of possible extension queue 2493. Compared 366841 event pairs, 27782 based on Foata normal form. 0/39040 useless extension candidates. Maximal degree in co-relation 179929. Up to 54545 conditions per place. [2024-12-02 10:40:53,678 INFO L140 encePairwiseOnDemand]: 80/82 looper letters, 105 selfloop transitions, 1 changer transitions 0/125 dead transitions. [2024-12-02 10:40:53,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 125 transitions, 962 flow [2024-12-02 10:40:53,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:40:53,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:40:53,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-12-02 10:40:53,679 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2024-12-02 10:40:53,679 INFO L175 Difference]: Start difference. First operand has 120 places, 126 transitions, 754 flow. Second operand 3 states and 117 transitions. [2024-12-02 10:40:53,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 125 transitions, 962 flow [2024-12-02 10:40:53,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 125 transitions, 940 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-12-02 10:40:53,812 INFO L231 Difference]: Finished difference. Result has 120 places, 125 transitions, 730 flow [2024-12-02 10:40:53,812 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=730, PETRI_PLACES=120, PETRI_TRANSITIONS=125} [2024-12-02 10:40:53,813 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 37 predicate places. [2024-12-02 10:40:53,813 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 125 transitions, 730 flow [2024-12-02 10:40:53,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 10:40:53,813 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:40:53,813 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:40:53,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 10:40:53,813 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:40:53,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:40:53,814 INFO L85 PathProgramCache]: Analyzing trace with hash -457764916, now seen corresponding path program 1 times [2024-12-02 10:40:53,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:40:53,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883395765] [2024-12-02 10:40:53,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:40:53,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:40:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:40:53,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:40:53,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:40:53,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883395765] [2024-12-02 10:40:53,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883395765] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:40:53,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711661480] [2024-12-02 10:40:53,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:40:53,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:40:53,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:40:53,857 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:40:53,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 10:40:53,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:40:53,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 10:40:53,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:40:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:40:54,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:40:54,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:40:54,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711661480] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:40:54,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:40:54,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2024-12-02 10:40:54,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141040522] [2024-12-02 10:40:54,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:40:54,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:40:54,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:40:54,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:40:54,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:40:54,064 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 10:40:54,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 125 transitions, 730 flow. Second operand has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:40:54,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:40:54,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 10:40:54,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:41:12,501 INFO L124 PetriNetUnfolderBase]: 109980/149849 cut-off events. [2024-12-02 10:41:12,502 INFO L125 PetriNetUnfolderBase]: For 74821/74857 co-relation queries the response was YES. [2024-12-02 10:41:13,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423040 conditions, 149849 events. 109980/149849 cut-off events. For 74821/74857 co-relation queries the response was YES. Maximal size of possible extension queue 4956. Compared 1079576 event pairs, 7102 based on Foata normal form. 0/100164 useless extension candidates. Maximal degree in co-relation 423005. Up to 41811 conditions per place. [2024-12-02 10:41:13,700 INFO L140 encePairwiseOnDemand]: 79/82 looper letters, 220 selfloop transitions, 5 changer transitions 1/245 dead transitions. [2024-12-02 10:41:13,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 245 transitions, 1702 flow [2024-12-02 10:41:13,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:41:13,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 10:41:13,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 299 transitions. [2024-12-02 10:41:13,702 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6077235772357723 [2024-12-02 10:41:13,702 INFO L175 Difference]: Start difference. First operand has 120 places, 125 transitions, 730 flow. Second operand 6 states and 299 transitions. [2024-12-02 10:41:13,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 245 transitions, 1702 flow [2024-12-02 10:41:13,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 245 transitions, 1701 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 10:41:13,760 INFO L231 Difference]: Finished difference. Result has 127 places, 128 transitions, 765 flow [2024-12-02 10:41:13,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=765, PETRI_PLACES=127, PETRI_TRANSITIONS=128} [2024-12-02 10:41:13,761 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 44 predicate places. [2024-12-02 10:41:13,761 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 128 transitions, 765 flow [2024-12-02 10:41:13,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.428571428571427) internal successors, (213), 7 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:41:13,761 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:41:13,761 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 10:41:13,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 10:41:13,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:13,961 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:41:13,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:13,962 INFO L85 PathProgramCache]: Analyzing trace with hash 889745114, now seen corresponding path program 1 times [2024-12-02 10:41:13,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:13,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400649775] [2024-12-02 10:41:13,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:13,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:14,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:41:14,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:14,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400649775] [2024-12-02 10:41:14,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400649775] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:14,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857254110] [2024-12-02 10:41:14,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:14,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:14,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:14,396 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:14,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 10:41:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:14,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-12-02 10:41:14,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:41:14,533 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 23 treesize of output 1 [2024-12-02 10:41:14,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:41:14,753 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:41:15,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:41:15,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857254110] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:15,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 10:41:15,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 7] total 17 [2024-12-02 10:41:15,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648463707] [2024-12-02 10:41:15,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:41:15,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:41:15,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:15,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:41:15,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-12-02 10:41:15,013 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-12-02 10:41:15,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 128 transitions, 765 flow. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 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 10:41:15,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:41:15,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-12-02 10:41:15,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:41:52,358 INFO L124 PetriNetUnfolderBase]: 209456/288048 cut-off events. [2024-12-02 10:41:52,358 INFO L125 PetriNetUnfolderBase]: For 249823/250144 co-relation queries the response was YES. [2024-12-02 10:41:53,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843702 conditions, 288048 events. 209456/288048 cut-off events. For 249823/250144 co-relation queries the response was YES. Maximal size of possible extension queue 10645. Compared 2234545 event pairs, 25746 based on Foata normal form. 2/202126 useless extension candidates. Maximal degree in co-relation 843663. Up to 90873 conditions per place. [2024-12-02 10:41:54,756 INFO L140 encePairwiseOnDemand]: 71/82 looper letters, 180 selfloop transitions, 39 changer transitions 0/238 dead transitions. [2024-12-02 10:41:54,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 238 transitions, 1716 flow [2024-12-02 10:41:54,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:41:54,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 10:41:54,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 257 transitions. [2024-12-02 10:41:54,757 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6268292682926829 [2024-12-02 10:41:54,757 INFO L175 Difference]: Start difference. First operand has 127 places, 128 transitions, 765 flow. Second operand 5 states and 257 transitions. [2024-12-02 10:41:54,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 238 transitions, 1716 flow [2024-12-02 10:41:56,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 238 transitions, 1687 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-12-02 10:41:56,109 INFO L231 Difference]: Finished difference. Result has 133 places, 154 transitions, 1090 flow [2024-12-02 10:41:56,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1090, PETRI_PLACES=133, PETRI_TRANSITIONS=154} [2024-12-02 10:41:56,109 INFO L279 CegarLoopForPetriNet]: 83 programPoint places, 50 predicate places. [2024-12-02 10:41:56,110 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 154 transitions, 1090 flow [2024-12-02 10:41:56,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 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 10:41:56,110 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:41:56,110 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 10:41:56,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 10:41:56,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:56,310 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2024-12-02 10:41:56,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:56,311 INFO L85 PathProgramCache]: Analyzing trace with hash 365537061, now seen corresponding path program 1 times [2024-12-02 10:41:56,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:56,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628908986] [2024-12-02 10:41:56,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:56,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:56,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:56,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:41:56,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:56,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628908986] [2024-12-02 10:41:56,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628908986] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:41:56,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977270533] [2024-12-02 10:41:56,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:56,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:41:56,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:41:56,706 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:41:56,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_713294d4-93a0-4559-b2e2-f3eaddafdcb1/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 10:41:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:56,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 10:41:56,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:41:56,871 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 23 treesize of output 1 [2024-12-02 10:41:57,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:41:57,079 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:41:57,535 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 38 treesize of output 34 [2024-12-02 10:41:57,541 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 46 treesize of output 34 [2024-12-02 10:41:57,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:41:57,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977270533] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:41:57,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:41:57,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2024-12-02 10:41:57,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842489015] [2024-12-02 10:41:57,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:41:57,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 10:41:57,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:57,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 10:41:57,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2024-12-02 10:41:57,773 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 82 [2024-12-02 10:41:57,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 154 transitions, 1090 flow. Second operand has 22 states, 22 states have (on average 23.772727272727273) internal successors, (523), 22 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:41:57,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:41:57,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 82 [2024-12-02 10:41:57,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand