./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_unsafe-12.i --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_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/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_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_unsafe-12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/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_5abecb08-e755-4453-90ce-1a226064a3eb/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 0d5255e9cc8ffb776115e75fa8fa1fa6c2774a79275dfd8235c357288b00417c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:59:26,722 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:59:26,783 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-12-02 10:59:26,789 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:59:26,789 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:59:26,812 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:59:26,812 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:59:26,812 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:59:26,813 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:59:26,813 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:59:26,813 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:59:26,813 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:59:26,813 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:59:26,814 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:59:26,814 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:59:26,814 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:59:26,814 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 10:59:26,814 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 10:59:26,814 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:59:26,814 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 10:59:26,814 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:59:26,814 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 10:59:26,814 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:59:26,815 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 10:59:26,815 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 10:59:26,815 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 10:59:26,815 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 10:59:26,815 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:59:26,815 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:59:26,815 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:59:26,815 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:59:26,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:59:26,815 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:59:26,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:59:26,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:59:26,816 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:59:26,816 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:59:26,816 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:59:26,816 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:59:26,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:59:26,816 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:59:26,816 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:59:26,817 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 10:59:26,817 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 10:59:26,817 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:59:26,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:59:26,817 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:59:26,817 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:59:26,817 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:59:26,817 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:59:26,817 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_5abecb08-e755-4453-90ce-1a226064a3eb/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 -> 0d5255e9cc8ffb776115e75fa8fa1fa6c2774a79275dfd8235c357288b00417c [2024-12-02 10:59:27,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:59:27,051 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:59:27,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:59:27,054 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:59:27,054 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:59:27,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/pthread/fib_unsafe-12.i [2024-12-02 10:59:29,747 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/data/2eff4ecf3/b75fe2c473144a2a968f8a88097a7b76/FLAG45c84dfb5 [2024-12-02 10:59:29,991 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:59:29,992 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/sv-benchmarks/c/pthread/fib_unsafe-12.i [2024-12-02 10:59:30,002 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/data/2eff4ecf3/b75fe2c473144a2a968f8a88097a7b76/FLAG45c84dfb5 [2024-12-02 10:59:30,014 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/data/2eff4ecf3/b75fe2c473144a2a968f8a88097a7b76 [2024-12-02 10:59:30,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:59:30,017 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:59:30,019 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:59:30,019 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:59:30,022 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:59:30,023 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:59:30" (1/1) ... [2024-12-02 10:59:30,023 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f5d19e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:30, skipping insertion in model container [2024-12-02 10:59:30,024 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:59:30" (1/1) ... [2024-12-02 10:59:30,049 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:59:30,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:59:30,284 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:59:30,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:59:30,347 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:59:30,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:30 WrapperNode [2024-12-02 10:59:30,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:59:30,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:59:30,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:59:30,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:59:30,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:30" (1/1) ... [2024-12-02 10:59:30,364 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:30" (1/1) ... [2024-12-02 10:59:30,378 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 71 [2024-12-02 10:59:30,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:59:30,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:59:30,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:59:30,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:59:30,385 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:30" (1/1) ... [2024-12-02 10:59:30,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:30" (1/1) ... [2024-12-02 10:59:30,388 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:30" (1/1) ... [2024-12-02 10:59:30,400 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 10:59:30,400 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:30" (1/1) ... [2024-12-02 10:59:30,400 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:30" (1/1) ... [2024-12-02 10:59:30,405 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:30" (1/1) ... [2024-12-02 10:59:30,406 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:30" (1/1) ... [2024-12-02 10:59:30,409 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:30" (1/1) ... [2024-12-02 10:59:30,410 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:30" (1/1) ... [2024-12-02 10:59:30,411 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:30" (1/1) ... [2024-12-02 10:59:30,413 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:59:30,413 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:59:30,413 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:59:30,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:59:30,414 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:30" (1/1) ... [2024-12-02 10:59:30,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:59:30,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:59:30,438 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:59:30,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:59:30,459 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-12-02 10:59:30,459 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-12-02 10:59:30,459 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-12-02 10:59:30,459 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-12-02 10:59:30,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 10:59:30,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:59:30,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 10:59:30,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 10:59:30,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:59:30,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:59:30,460 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 10:59:30,550 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:59:30,552 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:59:30,714 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 10:59:30,714 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:59:30,817 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:59:30,817 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-02 10:59:30,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:59:30 BoogieIcfgContainer [2024-12-02 10:59:30,818 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:59:30,820 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:59:30,820 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:59:30,823 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:59:30,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:59:30" (1/3) ... [2024-12-02 10:59:30,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de5d43e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:59:30, skipping insertion in model container [2024-12-02 10:59:30,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:59:30" (2/3) ... [2024-12-02 10:59:30,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1de5d43e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:59:30, skipping insertion in model container [2024-12-02 10:59:30,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:59:30" (3/3) ... [2024-12-02 10:59:30,825 INFO L128 eAbstractionObserver]: Analyzing ICFG fib_unsafe-12.i [2024-12-02 10:59:30,836 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:59:30,838 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fib_unsafe-12.i that has 3 procedures, 42 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2024-12-02 10:59:30,838 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 10:59:30,886 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 10:59:30,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 44 transitions, 96 flow [2024-12-02 10:59:30,953 INFO L124 PetriNetUnfolderBase]: 3/42 cut-off events. [2024-12-02 10:59:30,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 10:59:30,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 42 events. 3/42 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 106 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-12-02 10:59:30,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 44 transitions, 96 flow [2024-12-02 10:59:30,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 42 transitions, 90 flow [2024-12-02 10:59:30,970 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:59:30,980 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;@64f82d72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:59:30,980 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-12-02 10:59:30,986 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 10:59:30,986 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-12-02 10:59:30,986 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 10:59:30,986 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:30,987 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:30,987 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:30,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:30,992 INFO L85 PathProgramCache]: Analyzing trace with hash 909223006, now seen corresponding path program 1 times [2024-12-02 10:59:30,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:31,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535592283] [2024-12-02 10:59:31,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:31,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:31,223 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 10:59:31,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:31,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535592283] [2024-12-02 10:59:31,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535592283] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:59:31,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:59:31,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:59:31,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264373722] [2024-12-02 10:59:31,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:59:31,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:59:31,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:31,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:59:31,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:59:31,255 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-12-02 10:59:31,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 10:59:31,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:31,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-12-02 10:59:31,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:59:31,540 INFO L124 PetriNetUnfolderBase]: 657/1292 cut-off events. [2024-12-02 10:59:31,541 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-12-02 10:59:31,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2311 conditions, 1292 events. 657/1292 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8013 event pairs, 156 based on Foata normal form. 0/989 useless extension candidates. Maximal degree in co-relation 2295. Up to 514 conditions per place. [2024-12-02 10:59:31,555 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 46 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2024-12-02 10:59:31,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 69 transitions, 249 flow [2024-12-02 10:59:31,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:59:31,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:59:31,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-12-02 10:59:31,568 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2024-12-02 10:59:31,569 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 90 flow. Second operand 4 states and 135 transitions. [2024-12-02 10:59:31,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 69 transitions, 249 flow [2024-12-02 10:59:31,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 10:59:31,578 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 119 flow [2024-12-02 10:59:31,580 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-12-02 10:59:31,584 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2024-12-02 10:59:31,584 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 119 flow [2024-12-02 10:59:31,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 10:59:31,584 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:31,584 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:31,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 10:59:31,585 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:31,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:31,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1884958881, now seen corresponding path program 1 times [2024-12-02 10:59:31,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:31,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302747388] [2024-12-02 10:59:31,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:31,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:31,686 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 10:59:31,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:31,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302747388] [2024-12-02 10:59:31,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302747388] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:59:31,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:59:31,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:59:31,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689046186] [2024-12-02 10:59:31,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:59:31,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:59:31,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:31,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:59:31,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:59:31,698 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-12-02 10:59:31,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 119 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 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 10:59:31,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:31,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-12-02 10:59:31,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:59:31,962 INFO L124 PetriNetUnfolderBase]: 885/1603 cut-off events. [2024-12-02 10:59:31,962 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2024-12-02 10:59:31,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3411 conditions, 1603 events. 885/1603 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 9945 event pairs, 213 based on Foata normal form. 74/1373 useless extension candidates. Maximal degree in co-relation 3395. Up to 785 conditions per place. [2024-12-02 10:59:31,975 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 55 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-12-02 10:59:31,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 75 transitions, 315 flow [2024-12-02 10:59:31,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:59:31,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:59:31,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-12-02 10:59:31,976 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7670454545454546 [2024-12-02 10:59:31,977 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 119 flow. Second operand 4 states and 135 transitions. [2024-12-02 10:59:31,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 75 transitions, 315 flow [2024-12-02 10:59:31,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 75 transitions, 315 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 10:59:31,980 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 143 flow [2024-12-02 10:59:31,980 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-12-02 10:59:31,981 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 7 predicate places. [2024-12-02 10:59:31,981 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 143 flow [2024-12-02 10:59:31,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 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 10:59:31,981 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:31,981 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:31,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 10:59:31,981 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:31,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:31,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1859744604, now seen corresponding path program 1 times [2024-12-02 10:59:31,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:31,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522199584] [2024-12-02 10:59:31,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:31,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:32,037 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 10:59:32,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:32,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522199584] [2024-12-02 10:59:32,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522199584] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:59:32,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:59:32,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 10:59:32,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971753234] [2024-12-02 10:59:32,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:59:32,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:59:32,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:32,038 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:59:32,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:59:32,044 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-12-02 10:59:32,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 10:59:32,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:32,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-12-02 10:59:32,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:59:32,338 INFO L124 PetriNetUnfolderBase]: 1133/2347 cut-off events. [2024-12-02 10:59:32,338 INFO L125 PetriNetUnfolderBase]: For 492/649 co-relation queries the response was YES. [2024-12-02 10:59:32,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4980 conditions, 2347 events. 1133/2347 cut-off events. For 492/649 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 17378 event pairs, 365 based on Foata normal form. 106/2046 useless extension candidates. Maximal degree in co-relation 4960. Up to 993 conditions per place. [2024-12-02 10:59:32,354 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-12-02 10:59:32,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 66 transitions, 300 flow [2024-12-02 10:59:32,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:59:32,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:59:32,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-12-02 10:59:32,356 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2024-12-02 10:59:32,356 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 143 flow. Second operand 3 states and 102 transitions. [2024-12-02 10:59:32,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 66 transitions, 300 flow [2024-12-02 10:59:32,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 66 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 10:59:32,358 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 153 flow [2024-12-02 10:59:32,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2024-12-02 10:59:32,359 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2024-12-02 10:59:32,359 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 153 flow [2024-12-02 10:59:32,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 10:59:32,359 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:32,359 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:32,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 10:59:32,360 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:32,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:32,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1817508161, now seen corresponding path program 1 times [2024-12-02 10:59:32,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:32,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840755226] [2024-12-02 10:59:32,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:32,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:32,411 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 10:59:32,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:32,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840755226] [2024-12-02 10:59:32,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840755226] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:59:32,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:59:32,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 10:59:32,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106940637] [2024-12-02 10:59:32,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:59:32,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:59:32,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:32,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:59:32,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:59:32,417 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-12-02 10:59:32,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 10:59:32,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:32,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-12-02 10:59:32,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:59:32,753 INFO L124 PetriNetUnfolderBase]: 1133/2310 cut-off events. [2024-12-02 10:59:32,753 INFO L125 PetriNetUnfolderBase]: For 616/773 co-relation queries the response was YES. [2024-12-02 10:59:32,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5137 conditions, 2310 events. 1133/2310 cut-off events. For 616/773 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 16829 event pairs, 365 based on Foata normal form. 92/1995 useless extension candidates. Maximal degree in co-relation 5115. Up to 993 conditions per place. [2024-12-02 10:59:32,773 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 44 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2024-12-02 10:59:32,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 66 transitions, 307 flow [2024-12-02 10:59:32,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:59:32,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:59:32,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-12-02 10:59:32,775 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7727272727272727 [2024-12-02 10:59:32,775 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 153 flow. Second operand 3 states and 102 transitions. [2024-12-02 10:59:32,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 66 transitions, 307 flow [2024-12-02 10:59:32,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 10:59:32,778 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 159 flow [2024-12-02 10:59:32,778 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-12-02 10:59:32,779 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 11 predicate places. [2024-12-02 10:59:32,779 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 159 flow [2024-12-02 10:59:32,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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 10:59:32,779 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:32,779 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:32,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 10:59:32,779 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:32,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:32,780 INFO L85 PathProgramCache]: Analyzing trace with hash 524565913, now seen corresponding path program 1 times [2024-12-02 10:59:32,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:32,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498674253] [2024-12-02 10:59:32,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:32,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:32,835 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 10:59:32,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:32,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498674253] [2024-12-02 10:59:32,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498674253] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:59:32,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:59:32,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:59:32,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141901823] [2024-12-02 10:59:32,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:59:32,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:59:32,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:32,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:59:32,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:59:32,847 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-12-02 10:59:32,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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 10:59:32,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:32,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-12-02 10:59:32,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:59:33,406 INFO L124 PetriNetUnfolderBase]: 2065/3705 cut-off events. [2024-12-02 10:59:33,407 INFO L125 PetriNetUnfolderBase]: For 1351/1765 co-relation queries the response was YES. [2024-12-02 10:59:33,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8799 conditions, 3705 events. 2065/3705 cut-off events. For 1351/1765 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 26275 event pairs, 457 based on Foata normal form. 255/3366 useless extension candidates. Maximal degree in co-relation 8775. Up to 2001 conditions per place. [2024-12-02 10:59:33,439 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 60 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2024-12-02 10:59:33,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 81 transitions, 399 flow [2024-12-02 10:59:33,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:59:33,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:59:33,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-12-02 10:59:33,441 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7443181818181818 [2024-12-02 10:59:33,441 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 159 flow. Second operand 4 states and 131 transitions. [2024-12-02 10:59:33,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 81 transitions, 399 flow [2024-12-02 10:59:33,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 81 transitions, 391 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 10:59:33,444 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 179 flow [2024-12-02 10:59:33,444 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-12-02 10:59:33,445 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2024-12-02 10:59:33,445 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 179 flow [2024-12-02 10:59:33,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 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 10:59:33,445 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:33,446 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:33,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 10:59:33,446 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:33,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:33,447 INFO L85 PathProgramCache]: Analyzing trace with hash 508178424, now seen corresponding path program 1 times [2024-12-02 10:59:33,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:33,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310031949] [2024-12-02 10:59:33,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:33,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:33,501 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 10:59:33,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:33,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310031949] [2024-12-02 10:59:33,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310031949] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:59:33,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:59:33,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:59:33,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2175078] [2024-12-02 10:59:33,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:59:33,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:59:33,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:33,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:59:33,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:59:33,510 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-12-02 10:59:33,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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 10:59:33,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:33,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-12-02 10:59:33,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:59:33,900 INFO L124 PetriNetUnfolderBase]: 1601/3211 cut-off events. [2024-12-02 10:59:33,900 INFO L125 PetriNetUnfolderBase]: For 1181/1660 co-relation queries the response was YES. [2024-12-02 10:59:33,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7718 conditions, 3211 events. 1601/3211 cut-off events. For 1181/1660 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 24158 event pairs, 227 based on Foata normal form. 337/2957 useless extension candidates. Maximal degree in co-relation 7692. Up to 1673 conditions per place. [2024-12-02 10:59:33,923 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2024-12-02 10:59:33,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 445 flow [2024-12-02 10:59:33,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:59:33,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:59:33,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-12-02 10:59:33,924 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7556818181818182 [2024-12-02 10:59:33,924 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 179 flow. Second operand 4 states and 133 transitions. [2024-12-02 10:59:33,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 445 flow [2024-12-02 10:59:33,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 441 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 10:59:33,927 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 197 flow [2024-12-02 10:59:33,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=197, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2024-12-02 10:59:33,928 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2024-12-02 10:59:33,928 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 197 flow [2024-12-02 10:59:33,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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 10:59:33,928 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:33,928 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:33,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 10:59:33,929 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:33,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:33,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1918001418, now seen corresponding path program 1 times [2024-12-02 10:59:33,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:33,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114697270] [2024-12-02 10:59:33,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:33,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:33,996 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 10:59:33,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:33,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114697270] [2024-12-02 10:59:33,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114697270] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:59:33,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:59:33,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:59:33,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394605220] [2024-12-02 10:59:33,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:59:33,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:59:33,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:33,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:59:33,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:59:34,005 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-12-02 10:59:34,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 10:59:34,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:34,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-12-02 10:59:34,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:59:34,263 INFO L124 PetriNetUnfolderBase]: 1121/2194 cut-off events. [2024-12-02 10:59:34,263 INFO L125 PetriNetUnfolderBase]: For 1435/1771 co-relation queries the response was YES. [2024-12-02 10:59:34,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6016 conditions, 2194 events. 1121/2194 cut-off events. For 1435/1771 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14688 event pairs, 160 based on Foata normal form. 49/1932 useless extension candidates. Maximal degree in co-relation 5985. Up to 835 conditions per place. [2024-12-02 10:59:34,279 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 6 changer transitions 0/91 dead transitions. [2024-12-02 10:59:34,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 499 flow [2024-12-02 10:59:34,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:59:34,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 10:59:34,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-12-02 10:59:34,281 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7318181818181818 [2024-12-02 10:59:34,281 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 197 flow. Second operand 5 states and 161 transitions. [2024-12-02 10:59:34,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 499 flow [2024-12-02 10:59:34,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 91 transitions, 489 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 10:59:34,284 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 217 flow [2024-12-02 10:59:34,285 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2024-12-02 10:59:34,285 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2024-12-02 10:59:34,285 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 217 flow [2024-12-02 10:59:34,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 10:59:34,285 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:34,285 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:34,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 10:59:34,286 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:34,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:34,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1478940209, now seen corresponding path program 1 times [2024-12-02 10:59:34,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:34,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171422569] [2024-12-02 10:59:34,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:34,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:34,355 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 10:59:34,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:34,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171422569] [2024-12-02 10:59:34,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171422569] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:59:34,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:59:34,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:59:34,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771371517] [2024-12-02 10:59:34,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:59:34,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:59:34,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:34,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:59:34,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:59:34,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-12-02 10:59:34,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 10:59:34,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:34,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-12-02 10:59:34,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:59:34,619 INFO L124 PetriNetUnfolderBase]: 1167/2323 cut-off events. [2024-12-02 10:59:34,619 INFO L125 PetriNetUnfolderBase]: For 1787/2055 co-relation queries the response was YES. [2024-12-02 10:59:34,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6628 conditions, 2323 events. 1167/2323 cut-off events. For 1787/2055 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 15958 event pairs, 223 based on Foata normal form. 79/2245 useless extension candidates. Maximal degree in co-relation 6595. Up to 1105 conditions per place. [2024-12-02 10:59:34,650 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 65 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2024-12-02 10:59:34,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 92 transitions, 520 flow [2024-12-02 10:59:34,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:59:34,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 10:59:34,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-12-02 10:59:34,651 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7363636363636363 [2024-12-02 10:59:34,651 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 217 flow. Second operand 5 states and 162 transitions. [2024-12-02 10:59:34,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 92 transitions, 520 flow [2024-12-02 10:59:34,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 92 transitions, 509 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 10:59:34,655 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 242 flow [2024-12-02 10:59:34,655 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2024-12-02 10:59:34,656 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 23 predicate places. [2024-12-02 10:59:34,656 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 242 flow [2024-12-02 10:59:34,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 10:59:34,656 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:34,656 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:34,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 10:59:34,656 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:34,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:34,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1334785602, now seen corresponding path program 1 times [2024-12-02 10:59:34,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:34,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051184057] [2024-12-02 10:59:34,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:34,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:34,721 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 10:59:34,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:34,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051184057] [2024-12-02 10:59:34,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051184057] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:59:34,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:59:34,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:59:34,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378392804] [2024-12-02 10:59:34,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:59:34,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:59:34,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:34,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:59:34,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:59:34,731 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-12-02 10:59:34,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 242 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 10:59:34,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:34,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-12-02 10:59:34,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:59:34,963 INFO L124 PetriNetUnfolderBase]: 1041/2085 cut-off events. [2024-12-02 10:59:34,963 INFO L125 PetriNetUnfolderBase]: For 2141/2382 co-relation queries the response was YES. [2024-12-02 10:59:34,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6217 conditions, 2085 events. 1041/2085 cut-off events. For 2141/2382 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14132 event pairs, 265 based on Foata normal form. 77/2033 useless extension candidates. Maximal degree in co-relation 6183. Up to 1215 conditions per place. [2024-12-02 10:59:34,976 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 53 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2024-12-02 10:59:34,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 78 transitions, 454 flow [2024-12-02 10:59:34,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:59:34,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 10:59:34,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-12-02 10:59:34,977 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6727272727272727 [2024-12-02 10:59:34,977 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 242 flow. Second operand 5 states and 148 transitions. [2024-12-02 10:59:34,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 78 transitions, 454 flow [2024-12-02 10:59:34,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 78 transitions, 439 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-12-02 10:59:34,982 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 243 flow [2024-12-02 10:59:34,982 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2024-12-02 10:59:34,982 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2024-12-02 10:59:34,982 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 243 flow [2024-12-02 10:59:34,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 10:59:34,983 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:34,983 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:34,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 10:59:34,983 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:34,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:34,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1334785601, now seen corresponding path program 1 times [2024-12-02 10:59:34,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:34,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048536946] [2024-12-02 10:59:34,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:34,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:35,047 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 10:59:35,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:35,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048536946] [2024-12-02 10:59:35,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048536946] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:59:35,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:59:35,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:59:35,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204232981] [2024-12-02 10:59:35,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:59:35,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:59:35,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:35,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:59:35,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:59:35,055 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-12-02 10:59:35,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 10:59:35,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:35,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-12-02 10:59:35,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:59:35,313 INFO L124 PetriNetUnfolderBase]: 1083/2162 cut-off events. [2024-12-02 10:59:35,313 INFO L125 PetriNetUnfolderBase]: For 2515/2765 co-relation queries the response was YES. [2024-12-02 10:59:35,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6506 conditions, 2162 events. 1083/2162 cut-off events. For 2515/2765 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14627 event pairs, 258 based on Foata normal form. 77/2159 useless extension candidates. Maximal degree in co-relation 6471. Up to 1229 conditions per place. [2024-12-02 10:59:35,327 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 62 selfloop transitions, 7 changer transitions 0/89 dead transitions. [2024-12-02 10:59:35,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 89 transitions, 524 flow [2024-12-02 10:59:35,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:59:35,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 10:59:35,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-12-02 10:59:35,328 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7181818181818181 [2024-12-02 10:59:35,328 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 243 flow. Second operand 5 states and 158 transitions. [2024-12-02 10:59:35,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 89 transitions, 524 flow [2024-12-02 10:59:35,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 89 transitions, 510 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-12-02 10:59:35,333 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 265 flow [2024-12-02 10:59:35,333 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=265, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-12-02 10:59:35,334 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 26 predicate places. [2024-12-02 10:59:35,334 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 265 flow [2024-12-02 10:59:35,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 10:59:35,334 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:35,334 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:35,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 10:59:35,334 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:35,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:35,335 INFO L85 PathProgramCache]: Analyzing trace with hash -978726487, now seen corresponding path program 1 times [2024-12-02 10:59:35,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:35,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583025555] [2024-12-02 10:59:35,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:35,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:59:35,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:35,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583025555] [2024-12-02 10:59:35,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583025555] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:59:35,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348584749] [2024-12-02 10:59:35,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:35,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:59:35,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:59:35,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:59:35,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:59:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:35,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 10:59:35,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:59:35,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:59:35,505 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:59:35,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348584749] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:59:35,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:59:35,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-12-02 10:59:35,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298008379] [2024-12-02 10:59:35,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:59:35,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:59:35,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:35,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:59:35,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:59:35,515 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-12-02 10:59:35,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 265 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:59:35,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:35,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-12-02 10:59:35,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:59:35,841 INFO L124 PetriNetUnfolderBase]: 1453/2648 cut-off events. [2024-12-02 10:59:35,841 INFO L125 PetriNetUnfolderBase]: For 4238/4654 co-relation queries the response was YES. [2024-12-02 10:59:35,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8412 conditions, 2648 events. 1453/2648 cut-off events. For 4238/4654 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 17594 event pairs, 311 based on Foata normal form. 134/2677 useless extension candidates. Maximal degree in co-relation 8379. Up to 1048 conditions per place. [2024-12-02 10:59:35,854 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 84 selfloop transitions, 5 changer transitions 0/107 dead transitions. [2024-12-02 10:59:35,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 107 transitions, 683 flow [2024-12-02 10:59:35,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:59:35,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 10:59:35,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-12-02 10:59:35,856 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6893939393939394 [2024-12-02 10:59:35,856 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 265 flow. Second operand 6 states and 182 transitions. [2024-12-02 10:59:35,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 107 transitions, 683 flow [2024-12-02 10:59:35,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 107 transitions, 672 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-12-02 10:59:35,862 INFO L231 Difference]: Finished difference. Result has 74 places, 55 transitions, 260 flow [2024-12-02 10:59:35,862 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2024-12-02 10:59:35,863 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 28 predicate places. [2024-12-02 10:59:35,863 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 260 flow [2024-12-02 10:59:35,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:59:35,863 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:35,863 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:35,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:59:36,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-12-02 10:59:36,064 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:36,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:36,065 INFO L85 PathProgramCache]: Analyzing trace with hash -615979462, now seen corresponding path program 1 times [2024-12-02 10:59:36,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:36,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567488660] [2024-12-02 10:59:36,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:36,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:36,114 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 10:59:36,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:36,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567488660] [2024-12-02 10:59:36,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567488660] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:59:36,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335640000] [2024-12-02 10:59:36,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:36,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:59:36,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:59:36,116 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:59:36,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 10:59:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:36,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 10:59:36,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:59:36,250 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 10:59:36,250 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:59:36,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335640000] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:59:36,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:59:36,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2024-12-02 10:59:36,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419062278] [2024-12-02 10:59:36,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:59:36,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:59:36,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:36,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:59:36,251 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:59:36,257 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 44 [2024-12-02 10:59:36,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 260 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 10:59:36,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:36,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 44 [2024-12-02 10:59:36,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:59:36,433 INFO L124 PetriNetUnfolderBase]: 1083/2400 cut-off events. [2024-12-02 10:59:36,433 INFO L125 PetriNetUnfolderBase]: For 3857/4036 co-relation queries the response was YES. [2024-12-02 10:59:36,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7017 conditions, 2400 events. 1083/2400 cut-off events. For 3857/4036 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17819 event pairs, 187 based on Foata normal form. 119/2436 useless extension candidates. Maximal degree in co-relation 6984. Up to 1216 conditions per place. [2024-12-02 10:59:36,442 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 54 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2024-12-02 10:59:36,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 499 flow [2024-12-02 10:59:36,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:59:36,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:59:36,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-12-02 10:59:36,443 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-12-02 10:59:36,443 INFO L175 Difference]: Start difference. First operand has 74 places, 55 transitions, 260 flow. Second operand 4 states and 120 transitions. [2024-12-02 10:59:36,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 499 flow [2024-12-02 10:59:36,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 493 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 10:59:36,447 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 255 flow [2024-12-02 10:59:36,447 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2024-12-02 10:59:36,448 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2024-12-02 10:59:36,448 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 255 flow [2024-12-02 10:59:36,448 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 10:59:36,448 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:36,448 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:36,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 10:59:36,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 10:59:36,649 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:36,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:36,649 INFO L85 PathProgramCache]: Analyzing trace with hash -275749701, now seen corresponding path program 1 times [2024-12-02 10:59:36,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:36,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464916401] [2024-12-02 10:59:36,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:36,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:36,678 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:59:36,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:36,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464916401] [2024-12-02 10:59:36,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464916401] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:59:36,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:59:36,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:59:36,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310571805] [2024-12-02 10:59:36,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:59:36,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:59:36,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:36,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:59:36,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:59:36,687 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2024-12-02 10:59:36,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 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 10:59:36,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:36,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2024-12-02 10:59:36,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:59:36,933 INFO L124 PetriNetUnfolderBase]: 1611/2958 cut-off events. [2024-12-02 10:59:36,933 INFO L125 PetriNetUnfolderBase]: For 4733/5006 co-relation queries the response was YES. [2024-12-02 10:59:36,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9391 conditions, 2958 events. 1611/2958 cut-off events. For 4733/5006 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 19787 event pairs, 774 based on Foata normal form. 127/3016 useless extension candidates. Maximal degree in co-relation 9358. Up to 1547 conditions per place. [2024-12-02 10:59:36,942 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 68 selfloop transitions, 6 changer transitions 0/90 dead transitions. [2024-12-02 10:59:36,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 90 transitions, 577 flow [2024-12-02 10:59:36,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:59:36,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:59:36,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-12-02 10:59:36,943 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7045454545454546 [2024-12-02 10:59:36,943 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 255 flow. Second operand 4 states and 124 transitions. [2024-12-02 10:59:36,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 90 transitions, 577 flow [2024-12-02 10:59:36,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 90 transitions, 568 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-12-02 10:59:36,950 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 264 flow [2024-12-02 10:59:36,950 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=264, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2024-12-02 10:59:36,951 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2024-12-02 10:59:36,951 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 264 flow [2024-12-02 10:59:36,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 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 10:59:36,951 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:36,951 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:36,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 10:59:36,951 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:36,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:36,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1915493853, now seen corresponding path program 1 times [2024-12-02 10:59:36,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:36,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086785566] [2024-12-02 10:59:36,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:36,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:36,996 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 10:59:36,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:36,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086785566] [2024-12-02 10:59:36,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086785566] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:59:36,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13741847] [2024-12-02 10:59:36,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:36,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:59:36,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:59:36,998 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:59:37,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 10:59:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:37,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 10:59:37,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:59:37,134 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 10:59:37,134 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:59:37,189 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 10:59:37,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13741847] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:59:37,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:59:37,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2024-12-02 10:59:37,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996688652] [2024-12-02 10:59:37,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:59:37,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 10:59:37,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:37,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 10:59:37,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:59:37,204 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-12-02 10:59:37,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 264 flow. Second operand has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 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 10:59:37,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:37,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-12-02 10:59:37,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:59:37,692 INFO L124 PetriNetUnfolderBase]: 2907/6187 cut-off events. [2024-12-02 10:59:37,692 INFO L125 PetriNetUnfolderBase]: For 11200/11652 co-relation queries the response was YES. [2024-12-02 10:59:37,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17977 conditions, 6187 events. 2907/6187 cut-off events. For 11200/11652 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 50750 event pairs, 187 based on Foata normal form. 370/6492 useless extension candidates. Maximal degree in co-relation 17944. Up to 1217 conditions per place. [2024-12-02 10:59:37,715 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 129 selfloop transitions, 5 changer transitions 0/153 dead transitions. [2024-12-02 10:59:37,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 153 transitions, 1102 flow [2024-12-02 10:59:37,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:59:37,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 10:59:37,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-12-02 10:59:37,717 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7840909090909091 [2024-12-02 10:59:37,717 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 264 flow. Second operand 6 states and 207 transitions. [2024-12-02 10:59:37,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 153 transitions, 1102 flow [2024-12-02 10:59:37,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 153 transitions, 1086 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 10:59:37,723 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 292 flow [2024-12-02 10:59:37,723 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=292, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2024-12-02 10:59:37,723 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2024-12-02 10:59:37,724 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 292 flow [2024-12-02 10:59:37,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.375) internal successors, (187), 8 states have internal predecessors, (187), 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 10:59:37,724 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:37,724 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:37,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 10:59:37,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 10:59:37,924 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:37,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:37,925 INFO L85 PathProgramCache]: Analyzing trace with hash -84325124, now seen corresponding path program 1 times [2024-12-02 10:59:37,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:37,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127247629] [2024-12-02 10:59:37,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:37,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:37,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:59:37,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:37,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127247629] [2024-12-02 10:59:37,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127247629] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:59:37,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026241881] [2024-12-02 10:59:37,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:37,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:59:37,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:59:37,981 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:59:37,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 10:59:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:38,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 10:59:38,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:59:38,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:59:38,065 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:59:38,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026241881] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:59:38,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:59:38,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-12-02 10:59:38,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378278262] [2024-12-02 10:59:38,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:59:38,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:59:38,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:38,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:59:38,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:59:38,078 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-12-02 10:59:38,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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 10:59:38,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:38,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-12-02 10:59:38,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:59:38,611 INFO L124 PetriNetUnfolderBase]: 3691/6634 cut-off events. [2024-12-02 10:59:38,611 INFO L125 PetriNetUnfolderBase]: For 13310/13724 co-relation queries the response was YES. [2024-12-02 10:59:38,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21777 conditions, 6634 events. 3691/6634 cut-off events. For 13310/13724 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 48496 event pairs, 815 based on Foata normal form. 162/6562 useless extension candidates. Maximal degree in co-relation 21740. Up to 2628 conditions per place. [2024-12-02 10:59:38,638 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 90 selfloop transitions, 5 changer transitions 0/111 dead transitions. [2024-12-02 10:59:38,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 111 transitions, 797 flow [2024-12-02 10:59:38,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:59:38,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 10:59:38,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-12-02 10:59:38,640 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-12-02 10:59:38,640 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 292 flow. Second operand 6 states and 176 transitions. [2024-12-02 10:59:38,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 111 transitions, 797 flow [2024-12-02 10:59:38,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 111 transitions, 755 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-12-02 10:59:38,651 INFO L231 Difference]: Finished difference. Result has 81 places, 56 transitions, 286 flow [2024-12-02 10:59:38,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=81, PETRI_TRANSITIONS=56} [2024-12-02 10:59:38,651 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2024-12-02 10:59:38,651 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 56 transitions, 286 flow [2024-12-02 10:59:38,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 6 states have internal predecessors, (126), 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 10:59:38,651 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:38,651 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:38,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 10:59:38,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 10:59:38,852 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:38,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:38,852 INFO L85 PathProgramCache]: Analyzing trace with hash 749232982, now seen corresponding path program 1 times [2024-12-02 10:59:38,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:38,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174171875] [2024-12-02 10:59:38,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:38,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:38,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:59:38,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:38,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174171875] [2024-12-02 10:59:38,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174171875] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:59:38,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216762614] [2024-12-02 10:59:38,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:38,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:59:38,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:59:38,898 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:59:38,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 10:59:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:38,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 10:59:38,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:59:38,979 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:59:38,979 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:59:38,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216762614] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:59:38,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:59:38,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2024-12-02 10:59:38,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134277039] [2024-12-02 10:59:38,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:59:38,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:59:38,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:38,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:59:38,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:59:38,986 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-12-02 10:59:38,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 56 transitions, 286 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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 10:59:38,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:38,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-12-02 10:59:38,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:59:39,514 INFO L124 PetriNetUnfolderBase]: 3819/6572 cut-off events. [2024-12-02 10:59:39,514 INFO L125 PetriNetUnfolderBase]: For 13810/14017 co-relation queries the response was YES. [2024-12-02 10:59:39,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22085 conditions, 6572 events. 3819/6572 cut-off events. For 13810/14017 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 45194 event pairs, 1663 based on Foata normal form. 228/6431 useless extension candidates. Maximal degree in co-relation 22048. Up to 3155 conditions per place. [2024-12-02 10:59:39,545 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 53 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2024-12-02 10:59:39,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 539 flow [2024-12-02 10:59:39,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:59:39,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:59:39,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-12-02 10:59:39,546 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6420454545454546 [2024-12-02 10:59:39,546 INFO L175 Difference]: Start difference. First operand has 81 places, 56 transitions, 286 flow. Second operand 4 states and 113 transitions. [2024-12-02 10:59:39,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 539 flow [2024-12-02 10:59:39,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 77 transitions, 533 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-12-02 10:59:39,560 INFO L231 Difference]: Finished difference. Result has 80 places, 55 transitions, 293 flow [2024-12-02 10:59:39,560 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=293, PETRI_PLACES=80, PETRI_TRANSITIONS=55} [2024-12-02 10:59:39,560 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 34 predicate places. [2024-12-02 10:59:39,560 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 55 transitions, 293 flow [2024-12-02 10:59:39,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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 10:59:39,561 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:39,561 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:39,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 10:59:39,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 10:59:39,761 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:39,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:39,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1844784054, now seen corresponding path program 1 times [2024-12-02 10:59:39,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:39,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051513773] [2024-12-02 10:59:39,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:39,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:39,822 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 10:59:39,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:39,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051513773] [2024-12-02 10:59:39,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051513773] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:59:39,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436464005] [2024-12-02 10:59:39,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:39,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:59:39,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:59:39,824 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:59:39,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 10:59:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:39,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 10:59:39,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:59:39,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:59:39,973 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:59:39,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436464005] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:59:39,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:59:39,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-12-02 10:59:39,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689379338] [2024-12-02 10:59:39,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:59:39,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:59:39,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:39,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:59:39,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:59:39,985 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-12-02 10:59:39,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 55 transitions, 293 flow. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 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 10:59:39,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:39,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-12-02 10:59:39,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:59:40,440 INFO L124 PetriNetUnfolderBase]: 3259/6208 cut-off events. [2024-12-02 10:59:40,440 INFO L125 PetriNetUnfolderBase]: For 14520/14830 co-relation queries the response was YES. [2024-12-02 10:59:40,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21119 conditions, 6208 events. 3259/6208 cut-off events. For 14520/14830 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 46260 event pairs, 737 based on Foata normal form. 360/6483 useless extension candidates. Maximal degree in co-relation 21080. Up to 2388 conditions per place. [2024-12-02 10:59:40,466 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 67 selfloop transitions, 9 changer transitions 0/92 dead transitions. [2024-12-02 10:59:40,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 92 transitions, 659 flow [2024-12-02 10:59:40,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:59:40,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 10:59:40,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 173 transitions. [2024-12-02 10:59:40,468 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6553030303030303 [2024-12-02 10:59:40,468 INFO L175 Difference]: Start difference. First operand has 80 places, 55 transitions, 293 flow. Second operand 6 states and 173 transitions. [2024-12-02 10:59:40,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 92 transitions, 659 flow [2024-12-02 10:59:40,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 92 transitions, 612 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-12-02 10:59:40,481 INFO L231 Difference]: Finished difference. Result has 81 places, 55 transitions, 305 flow [2024-12-02 10:59:40,481 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=305, PETRI_PLACES=81, PETRI_TRANSITIONS=55} [2024-12-02 10:59:40,482 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 35 predicate places. [2024-12-02 10:59:40,482 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 55 transitions, 305 flow [2024-12-02 10:59:40,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 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 10:59:40,482 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:40,482 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:40,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 10:59:40,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 10:59:40,682 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:40,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:40,683 INFO L85 PathProgramCache]: Analyzing trace with hash 397023509, now seen corresponding path program 1 times [2024-12-02 10:59:40,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:40,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122155511] [2024-12-02 10:59:40,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:40,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:40,736 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 10:59:40,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:40,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122155511] [2024-12-02 10:59:40,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122155511] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:59:40,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63854479] [2024-12-02 10:59:40,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:40,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:59:40,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:59:40,738 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:59:40,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 10:59:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:40,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 10:59:40,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:59:40,871 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 10:59:40,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:59:40,940 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 10:59:40,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63854479] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:59:40,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:59:40,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-12-02 10:59:40,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565558767] [2024-12-02 10:59:40,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:59:40,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 10:59:40,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:40,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 10:59:40,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-12-02 10:59:40,964 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-12-02 10:59:40,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 55 transitions, 305 flow. Second operand has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 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 10:59:40,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:40,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-12-02 10:59:40,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:59:42,812 INFO L124 PetriNetUnfolderBase]: 9393/18778 cut-off events. [2024-12-02 10:59:42,812 INFO L125 PetriNetUnfolderBase]: For 50201/51140 co-relation queries the response was YES. [2024-12-02 10:59:42,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63381 conditions, 18778 events. 9393/18778 cut-off events. For 50201/51140 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 170182 event pairs, 503 based on Foata normal form. 1298/19983 useless extension candidates. Maximal degree in co-relation 63340. Up to 3943 conditions per place. [2024-12-02 10:59:42,907 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 327 selfloop transitions, 47 changer transitions 0/390 dead transitions. [2024-12-02 10:59:42,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 390 transitions, 2826 flow [2024-12-02 10:59:42,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 10:59:42,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-12-02 10:59:42,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 751 transitions. [2024-12-02 10:59:42,910 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7111742424242424 [2024-12-02 10:59:42,911 INFO L175 Difference]: Start difference. First operand has 81 places, 55 transitions, 305 flow. Second operand 24 states and 751 transitions. [2024-12-02 10:59:42,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 390 transitions, 2826 flow [2024-12-02 10:59:42,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 390 transitions, 2777 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-12-02 10:59:42,971 INFO L231 Difference]: Finished difference. Result has 114 places, 95 transitions, 863 flow [2024-12-02 10:59:42,971 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=863, PETRI_PLACES=114, PETRI_TRANSITIONS=95} [2024-12-02 10:59:42,972 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 68 predicate places. [2024-12-02 10:59:42,972 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 95 transitions, 863 flow [2024-12-02 10:59:42,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.642857142857142) internal successors, (317), 14 states have internal predecessors, (317), 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 10:59:42,972 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:42,972 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:42,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-12-02 10:59:43,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 10:59:43,173 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:43,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:43,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1680888787, now seen corresponding path program 1 times [2024-12-02 10:59:43,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:43,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426248172] [2024-12-02 10:59:43,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:43,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:59:43,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:43,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426248172] [2024-12-02 10:59:43,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426248172] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:59:43,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:59:43,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:59:43,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874837435] [2024-12-02 10:59:43,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:59:43,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:59:43,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:43,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:59:43,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:59:43,211 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 44 [2024-12-02 10:59:43,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 95 transitions, 863 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 10:59:43,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:43,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 44 [2024-12-02 10:59:43,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:59:45,852 INFO L124 PetriNetUnfolderBase]: 14883/25342 cut-off events. [2024-12-02 10:59:45,852 INFO L125 PetriNetUnfolderBase]: For 178253/179318 co-relation queries the response was YES. [2024-12-02 10:59:45,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105391 conditions, 25342 events. 14883/25342 cut-off events. For 178253/179318 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 211039 event pairs, 5592 based on Foata normal form. 864/25811 useless extension candidates. Maximal degree in co-relation 105338. Up to 11443 conditions per place. [2024-12-02 10:59:46,015 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 145 selfloop transitions, 6 changer transitions 0/165 dead transitions. [2024-12-02 10:59:46,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 165 transitions, 1791 flow [2024-12-02 10:59:46,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:59:46,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:59:46,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2024-12-02 10:59:46,016 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-12-02 10:59:46,016 INFO L175 Difference]: Start difference. First operand has 114 places, 95 transitions, 863 flow. Second operand 4 states and 116 transitions. [2024-12-02 10:59:46,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 165 transitions, 1791 flow [2024-12-02 10:59:46,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 165 transitions, 1457 flow, removed 130 selfloop flow, removed 9 redundant places. [2024-12-02 10:59:46,354 INFO L231 Difference]: Finished difference. Result has 108 places, 95 transitions, 681 flow [2024-12-02 10:59:46,354 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=681, PETRI_PLACES=108, PETRI_TRANSITIONS=95} [2024-12-02 10:59:46,354 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 62 predicate places. [2024-12-02 10:59:46,354 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 95 transitions, 681 flow [2024-12-02 10:59:46,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 10:59:46,354 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:46,354 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:46,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 10:59:46,355 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:46,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:46,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1751386274, now seen corresponding path program 1 times [2024-12-02 10:59:46,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:46,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379217848] [2024-12-02 10:59:46,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:46,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:46,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:46,380 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:59:46,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:46,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379217848] [2024-12-02 10:59:46,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379217848] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:59:46,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:59:46,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:59:46,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125804634] [2024-12-02 10:59:46,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:59:46,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:59:46,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:46,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:59:46,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:59:46,384 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-12-02 10:59:46,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 95 transitions, 681 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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 10:59:46,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:46,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-12-02 10:59:46,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:59:48,530 INFO L124 PetriNetUnfolderBase]: 11993/21452 cut-off events. [2024-12-02 10:59:48,531 INFO L125 PetriNetUnfolderBase]: For 186734/186734 co-relation queries the response was YES. [2024-12-02 10:59:48,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85452 conditions, 21452 events. 11993/21452 cut-off events. For 186734/186734 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 180334 event pairs, 2570 based on Foata normal form. 0/21083 useless extension candidates. Maximal degree in co-relation 85402. Up to 9373 conditions per place. [2024-12-02 10:59:48,712 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 194 selfloop transitions, 9 changer transitions 0/219 dead transitions. [2024-12-02 10:59:48,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 219 transitions, 2147 flow [2024-12-02 10:59:48,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:59:48,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 10:59:48,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-12-02 10:59:48,713 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6761363636363636 [2024-12-02 10:59:48,713 INFO L175 Difference]: Start difference. First operand has 108 places, 95 transitions, 681 flow. Second operand 4 states and 119 transitions. [2024-12-02 10:59:48,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 219 transitions, 2147 flow [2024-12-02 10:59:48,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 219 transitions, 2135 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 10:59:48,933 INFO L231 Difference]: Finished difference. Result has 109 places, 95 transitions, 695 flow [2024-12-02 10:59:48,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=695, PETRI_PLACES=109, PETRI_TRANSITIONS=95} [2024-12-02 10:59:48,933 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 63 predicate places. [2024-12-02 10:59:48,933 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 95 transitions, 695 flow [2024-12-02 10:59:48,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 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 10:59:48,934 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:48,934 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:48,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 10:59:48,934 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:48,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:48,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1921771017, now seen corresponding path program 1 times [2024-12-02 10:59:48,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:48,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642329534] [2024-12-02 10:59:48,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:48,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:49,025 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:59:49,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:49,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642329534] [2024-12-02 10:59:49,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642329534] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:59:49,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681178922] [2024-12-02 10:59:49,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:49,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:59:49,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:59:49,028 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:59:49,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 10:59:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:49,077 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 10:59:49,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:59:49,202 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:59:49,203 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:59:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:59:49,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681178922] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:59:49,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:59:49,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2024-12-02 10:59:49,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347360269] [2024-12-02 10:59:49,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:59:49,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 10:59:49,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:49,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 10:59:49,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2024-12-02 10:59:49,356 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-12-02 10:59:49,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 95 transitions, 695 flow. Second operand has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 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 10:59:49,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:49,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-12-02 10:59:49,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:59:52,363 INFO L124 PetriNetUnfolderBase]: 13285/25710 cut-off events. [2024-12-02 10:59:52,363 INFO L125 PetriNetUnfolderBase]: For 259938/259938 co-relation queries the response was YES. [2024-12-02 10:59:52,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105653 conditions, 25710 events. 13285/25710 cut-off events. For 259938/259938 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 236307 event pairs, 539 based on Foata normal form. 908/26435 useless extension candidates. Maximal degree in co-relation 105599. Up to 7399 conditions per place. [2024-12-02 10:59:52,554 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 304 selfloop transitions, 54 changer transitions 0/374 dead transitions. [2024-12-02 10:59:52,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 374 transitions, 3182 flow [2024-12-02 10:59:52,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 10:59:52,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-12-02 10:59:52,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 652 transitions. [2024-12-02 10:59:52,556 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7056277056277056 [2024-12-02 10:59:52,556 INFO L175 Difference]: Start difference. First operand has 109 places, 95 transitions, 695 flow. Second operand 21 states and 652 transitions. [2024-12-02 10:59:52,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 374 transitions, 3182 flow [2024-12-02 10:59:53,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 374 transitions, 2962 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-12-02 10:59:53,119 INFO L231 Difference]: Finished difference. Result has 132 places, 116 transitions, 1083 flow [2024-12-02 10:59:53,119 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1083, PETRI_PLACES=132, PETRI_TRANSITIONS=116} [2024-12-02 10:59:53,119 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 86 predicate places. [2024-12-02 10:59:53,119 INFO L471 AbstractCegarLoop]: Abstraction has has 132 places, 116 transitions, 1083 flow [2024-12-02 10:59:53,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 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 10:59:53,119 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:59:53,119 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:59:53,127 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 10:59:53,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-12-02 10:59:53,320 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 10:59:53,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:59:53,320 INFO L85 PathProgramCache]: Analyzing trace with hash 2036726892, now seen corresponding path program 1 times [2024-12-02 10:59:53,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:59:53,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605678698] [2024-12-02 10:59:53,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:53,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:59:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:53,397 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:59:53,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:59:53,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605678698] [2024-12-02 10:59:53,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605678698] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:59:53,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556254802] [2024-12-02 10:59:53,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:59:53,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:59:53,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:59:53,399 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:59:53,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 10:59:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:59:53,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 10:59:53,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:59:53,574 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:59:53,574 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:59:53,681 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:59:53,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556254802] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:59:53,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:59:53,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2024-12-02 10:59:53,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997635529] [2024-12-02 10:59:53,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:59:53,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 10:59:53,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:59:53,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 10:59:53,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2024-12-02 10:59:53,727 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-12-02 10:59:53,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 116 transitions, 1083 flow. Second operand has 20 states, 20 states have (on average 22.45) internal successors, (449), 20 states have internal predecessors, (449), 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 10:59:53,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:59:53,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-12-02 10:59:53,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:00:00,213 INFO L124 PetriNetUnfolderBase]: 25129/48768 cut-off events. [2024-12-02 11:00:00,214 INFO L125 PetriNetUnfolderBase]: For 904612/904612 co-relation queries the response was YES. [2024-12-02 11:00:00,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201204 conditions, 48768 events. 25129/48768 cut-off events. For 904612/904612 co-relation queries the response was YES. Maximal size of possible extension queue 1411. Compared 483026 event pairs, 1241 based on Foata normal form. 2988/51555 useless extension candidates. Maximal degree in co-relation 201142. Up to 6607 conditions per place. [2024-12-02 11:00:00,598 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 521 selfloop transitions, 118 changer transitions 0/655 dead transitions. [2024-12-02 11:00:00,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 655 transitions, 5629 flow [2024-12-02 11:00:00,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 11:00:00,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-12-02 11:00:00,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1159 transitions. [2024-12-02 11:00:00,602 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.711916461916462 [2024-12-02 11:00:00,602 INFO L175 Difference]: Start difference. First operand has 132 places, 116 transitions, 1083 flow. Second operand 37 states and 1159 transitions. [2024-12-02 11:00:00,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 655 transitions, 5629 flow [2024-12-02 11:00:02,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 655 transitions, 5487 flow, removed 50 selfloop flow, removed 13 redundant places. [2024-12-02 11:00:02,107 INFO L231 Difference]: Finished difference. Result has 169 places, 174 transitions, 2082 flow [2024-12-02 11:00:02,107 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2082, PETRI_PLACES=169, PETRI_TRANSITIONS=174} [2024-12-02 11:00:02,107 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 123 predicate places. [2024-12-02 11:00:02,107 INFO L471 AbstractCegarLoop]: Abstraction has has 169 places, 174 transitions, 2082 flow [2024-12-02 11:00:02,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 22.45) internal successors, (449), 20 states have internal predecessors, (449), 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 11:00:02,107 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:00:02,107 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:00:02,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 11:00:02,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:00:02,308 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 11:00:02,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:02,308 INFO L85 PathProgramCache]: Analyzing trace with hash -410393663, now seen corresponding path program 2 times [2024-12-02 11:00:02,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:00:02,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286825981] [2024-12-02 11:00:02,308 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:00:02,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:02,318 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:00:02,318 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:00:02,458 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:00:02,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:00:02,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286825981] [2024-12-02 11:00:02,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286825981] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:00:02,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718473905] [2024-12-02 11:00:02,458 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:00:02,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:00:02,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:02,460 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:00:02,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 11:00:02,523 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:00:02,523 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:00:02,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 11:00:02,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:00:02,667 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:00:02,668 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:00:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 11:00:02,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718473905] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:00:02,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:00:02,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2024-12-02 11:00:02,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508494836] [2024-12-02 11:00:02,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:00:02,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 11:00:02,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:00:02,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 11:00:02,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=174, Unknown=0, NotChecked=0, Total=272 [2024-12-02 11:00:02,786 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 44 [2024-12-02 11:00:02,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 174 transitions, 2082 flow. Second operand has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 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 11:00:02,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:00:02,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 44 [2024-12-02 11:00:02,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:00:22,517 INFO L124 PetriNetUnfolderBase]: 75277/135471 cut-off events. [2024-12-02 11:00:22,517 INFO L125 PetriNetUnfolderBase]: For 3011572/3011572 co-relation queries the response was YES. [2024-12-02 11:00:23,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641406 conditions, 135471 events. 75277/135471 cut-off events. For 3011572/3011572 co-relation queries the response was YES. Maximal size of possible extension queue 2065. Compared 1364026 event pairs, 2709 based on Foata normal form. 4188/139417 useless extension candidates. Maximal degree in co-relation 641330. Up to 16321 conditions per place. [2024-12-02 11:00:24,176 INFO L140 encePairwiseOnDemand]: 41/44 looper letters, 1599 selfloop transitions, 11 changer transitions 0/1626 dead transitions. [2024-12-02 11:00:24,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 1626 transitions, 24678 flow [2024-12-02 11:00:24,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 11:00:24,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-12-02 11:00:24,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 403 transitions. [2024-12-02 11:00:24,177 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7632575757575758 [2024-12-02 11:00:24,177 INFO L175 Difference]: Start difference. First operand has 169 places, 174 transitions, 2082 flow. Second operand 12 states and 403 transitions. [2024-12-02 11:00:24,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 1626 transitions, 24678 flow [2024-12-02 11:00:27,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 1626 transitions, 21615 flow, removed 1331 selfloop flow, removed 13 redundant places. [2024-12-02 11:00:27,324 INFO L231 Difference]: Finished difference. Result has 173 places, 180 transitions, 1871 flow [2024-12-02 11:00:27,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1799, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1871, PETRI_PLACES=173, PETRI_TRANSITIONS=180} [2024-12-02 11:00:27,325 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 127 predicate places. [2024-12-02 11:00:27,325 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 180 transitions, 1871 flow [2024-12-02 11:00:27,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 22.529411764705884) internal successors, (383), 17 states have internal predecessors, (383), 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 11:00:27,325 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:00:27,325 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:00:27,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 11:00:27,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:00:27,526 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 11:00:27,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:27,526 INFO L85 PathProgramCache]: Analyzing trace with hash -693148737, now seen corresponding path program 2 times [2024-12-02 11:00:27,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:00:27,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842337371] [2024-12-02 11:00:27,526 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:00:27,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:27,533 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:00:27,534 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:00:27,619 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 11:00:27,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:00:27,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842337371] [2024-12-02 11:00:27,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842337371] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:00:27,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464887381] [2024-12-02 11:00:27,620 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:00:27,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:00:27,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:27,622 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:00:27,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 11:00:27,677 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:00:27,677 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:00:27,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 11:00:27,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:00:27,836 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 11:00:27,836 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:00:27,942 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 11:00:27,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464887381] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:00:27,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:00:27,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-12-02 11:00:27,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327210611] [2024-12-02 11:00:27,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:00:27,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 11:00:27,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:00:27,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 11:00:27,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2024-12-02 11:00:27,989 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-12-02 11:00:27,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 180 transitions, 1871 flow. Second operand has 22 states, 22 states have (on average 22.454545454545453) internal successors, (494), 22 states have internal predecessors, (494), 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 11:00:27,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:00:27,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-12-02 11:00:27,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 11:00:58,177 INFO L124 PetriNetUnfolderBase]: 102673/198864 cut-off events. [2024-12-02 11:00:58,177 INFO L125 PetriNetUnfolderBase]: For 4780308/4780308 co-relation queries the response was YES. [2024-12-02 11:01:00,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862125 conditions, 198864 events. 102673/198864 cut-off events. For 4780308/4780308 co-relation queries the response was YES. Maximal size of possible extension queue 3379. Compared 2266686 event pairs, 5333 based on Foata normal form. 4456/202729 useless extension candidates. Maximal degree in co-relation 862043. Up to 29839 conditions per place. [2024-12-02 11:01:00,845 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 817 selfloop transitions, 204 changer transitions 0/1037 dead transitions. [2024-12-02 11:01:00,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 1037 transitions, 10071 flow [2024-12-02 11:01:00,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-12-02 11:01:00,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-12-02 11:01:00,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 1227 transitions. [2024-12-02 11:01:00,848 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.715034965034965 [2024-12-02 11:01:00,848 INFO L175 Difference]: Start difference. First operand has 173 places, 180 transitions, 1871 flow. Second operand 39 states and 1227 transitions. [2024-12-02 11:01:00,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 1037 transitions, 10071 flow [2024-12-02 11:01:39,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 1037 transitions, 9255 flow, removed 259 selfloop flow, removed 5 redundant places. [2024-12-02 11:01:39,371 INFO L231 Difference]: Finished difference. Result has 215 places, 282 transitions, 3740 flow [2024-12-02 11:01:39,371 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1847, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=3740, PETRI_PLACES=215, PETRI_TRANSITIONS=282} [2024-12-02 11:01:39,371 INFO L279 CegarLoopForPetriNet]: 46 programPoint places, 169 predicate places. [2024-12-02 11:01:39,371 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 282 transitions, 3740 flow [2024-12-02 11:01:39,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 22.454545454545453) internal successors, (494), 22 states have internal predecessors, (494), 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 11:01:39,372 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 11:01:39,372 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:01:39,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-12-02 11:01:39,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:01:39,572 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2024-12-02 11:01:39,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:01:39,573 INFO L85 PathProgramCache]: Analyzing trace with hash -501582268, now seen corresponding path program 2 times [2024-12-02 11:01:39,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:01:39,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574907037] [2024-12-02 11:01:39,573 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:01:39,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:01:39,587 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:01:39,587 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:01:39,688 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 11:01:39,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:01:39,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574907037] [2024-12-02 11:01:39,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574907037] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:01:39,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380357681] [2024-12-02 11:01:39,688 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 11:01:39,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:01:39,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:39,690 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:01:39,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5abecb08-e755-4453-90ce-1a226064a3eb/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 11:01:39,751 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 11:01:39,751 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 11:01:39,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 11:01:39,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:01:39,918 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 11:01:39,918 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:01:40,065 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 11:01:40,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380357681] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:01:40,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:01:40,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-12-02 11:01:40,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591141964] [2024-12-02 11:01:40,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:01:40,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 11:01:40,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:01:40,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 11:01:40,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2024-12-02 11:01:40,130 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 44 [2024-12-02 11:01:40,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 282 transitions, 3740 flow. Second operand has 26 states, 26 states have (on average 22.346153846153847) internal successors, (581), 26 states have internal predecessors, (581), 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 11:01:40,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 11:01:40,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 44 [2024-12-02 11:01:40,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand