./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd --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 ec355916cf6ee76d4008e84bb2b3ecc632256e3b320d2f47b453f4ca1f46acbc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:36:03,642 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:36:03,748 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-13 13:36:03,754 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:36:03,756 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:36:03,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:36:03,807 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:36:03,808 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:36:03,809 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:36:03,809 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:36:03,809 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:36:03,810 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:36:03,810 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:36:03,810 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:36:03,811 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:36:03,811 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:36:03,811 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:36:03,812 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:36:03,812 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:36:03,812 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:36:03,812 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:36:03,812 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:36:03,812 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:36:03,812 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:36:03,812 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:36:03,812 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-13 13:36:03,813 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:36:03,813 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:36:03,813 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:36:03,814 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:36:03,815 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:36:03,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:36:03,815 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:36:03,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:36:03,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:36:03,816 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:36:03,817 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:36:03,817 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:36:03,817 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:36:03,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:36:03,817 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:36:03,817 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:36:03,817 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:36:03,818 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:36:03,818 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_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd 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 -> ec355916cf6ee76d4008e84bb2b3ecc632256e3b320d2f47b453f4ca1f46acbc [2024-11-13 13:36:04,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:36:04,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:36:04,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:36:04,167 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:36:04,167 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:36:04,170 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i Unable to find full path for "g++" [2024-11-13 13:36:06,416 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:36:06,770 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:36:06,771 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2024-11-13 13:36:06,788 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/data/8c7211503/14cfa02786154e53853fdaf1ecfd9369/FLAGaa8907f9e [2024-11-13 13:36:06,805 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/data/8c7211503/14cfa02786154e53853fdaf1ecfd9369 [2024-11-13 13:36:06,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:36:06,810 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:36:06,812 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:36:06,812 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:36:06,818 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:36:06,819 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:36:06" (1/1) ... [2024-11-13 13:36:06,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5067dc34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:36:06, skipping insertion in model container [2024-11-13 13:36:06,821 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:36:06" (1/1) ... [2024-11-13 13:36:06,870 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:36:07,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:36:07,525 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:36:07,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:36:07,660 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:36:07,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:36:07 WrapperNode [2024-11-13 13:36:07,661 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:36:07,663 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:36:07,663 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:36:07,663 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:36:07,672 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:36:07" (1/1) ... [2024-11-13 13:36:07,686 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:36:07" (1/1) ... [2024-11-13 13:36:07,718 INFO L138 Inliner]: procedures = 167, calls = 32, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 104 [2024-11-13 13:36:07,718 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:36:07,719 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:36:07,719 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:36:07,720 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:36:07,732 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:36:07" (1/1) ... [2024-11-13 13:36:07,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:36:07" (1/1) ... [2024-11-13 13:36:07,741 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:36:07" (1/1) ... [2024-11-13 13:36:07,765 INFO L175 MemorySlicer]: Split 18 memory accesses to 3 slices as follows [2, 8, 8]. 44 percent of accesses are in the largest equivalence class. The 16 initializations are split as follows [2, 8, 6]. The 1 writes are split as follows [0, 0, 1]. [2024-11-13 13:36:07,766 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:36:07" (1/1) ... [2024-11-13 13:36:07,766 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:36:07" (1/1) ... [2024-11-13 13:36:07,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:36:07" (1/1) ... [2024-11-13 13:36:07,790 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:36:07" (1/1) ... [2024-11-13 13:36:07,793 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:36:07" (1/1) ... [2024-11-13 13:36:07,794 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:36:07" (1/1) ... [2024-11-13 13:36:07,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:36:07,799 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:36:07,799 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:36:07,799 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:36:07,800 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:36:07" (1/1) ... [2024-11-13 13:36:07,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:36:07,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:07,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:36:07,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:36:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 13:36:07,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 13:36:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 13:36:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-13 13:36:07,875 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-13 13:36:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 13:36:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 13:36:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 13:36:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 13:36:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:36:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 13:36:07,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 13:36:07,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 13:36:07,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:36:07,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 13:36:07,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 13:36:07,876 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 13:36:07,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:36:07,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:36:07,879 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 13:36:08,105 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:36:08,107 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:36:08,385 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:36:08,385 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:36:08,718 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:36:08,718 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 13:36:08,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:36:08 BoogieIcfgContainer [2024-11-13 13:36:08,719 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:36:08,724 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:36:08,724 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:36:08,737 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:36:08,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:36:06" (1/3) ... [2024-11-13 13:36:08,742 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f64068e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:36:08, skipping insertion in model container [2024-11-13 13:36:08,742 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:36:07" (2/3) ... [2024-11-13 13:36:08,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f64068e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:36:08, skipping insertion in model container [2024-11-13 13:36:08,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:36:08" (3/3) ... [2024-11-13 13:36:08,744 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt.i [2024-11-13 13:36:08,773 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:36:08,776 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 11_fmaxsymopt.i that has 2 procedures, 32 locations, 1 initial locations, 3 loop locations, and 6 error locations. [2024-11-13 13:36:08,777 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:36:08,857 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:36:08,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 37 transitions, 78 flow [2024-11-13 13:36:08,969 INFO L124 PetriNetUnfolderBase]: 5/39 cut-off events. [2024-11-13 13:36:08,972 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:36:08,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 39 events. 5/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 74 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2024-11-13 13:36:08,980 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 37 transitions, 78 flow [2024-11-13 13:36:08,987 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 37 transitions, 78 flow [2024-11-13 13:36:09,007 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:36:09,036 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;@364e598c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:36:09,036 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-11-13 13:36:09,046 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:36:09,046 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-13 13:36:09,046 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:36:09,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:09,047 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 13:36:09,048 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-13 13:36:09,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:09,058 INFO L85 PathProgramCache]: Analyzing trace with hash 322025, now seen corresponding path program 1 times [2024-11-13 13:36:09,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:09,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647730395] [2024-11-13 13:36:09,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:09,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:09,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:09,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:09,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647730395] [2024-11-13 13:36:09,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647730395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:09,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:09,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:36:09,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61683354] [2024-11-13 13:36:09,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:09,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:36:09,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:09,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:36:09,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:36:09,555 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 37 [2024-11-13 13:36:09,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 37 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:09,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:09,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 37 [2024-11-13 13:36:09,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:09,762 INFO L124 PetriNetUnfolderBase]: 25/102 cut-off events. [2024-11-13 13:36:09,763 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:36:09,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 102 events. 25/102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 275 event pairs, 18 based on Foata normal form. 7/95 useless extension candidates. Maximal degree in co-relation 139. Up to 59 conditions per place. [2024-11-13 13:36:09,765 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 18 selfloop transitions, 3 changer transitions 0/36 dead transitions. [2024-11-13 13:36:09,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 36 transitions, 118 flow [2024-11-13 13:36:09,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:36:09,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:36:09,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-11-13 13:36:09,783 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5878378378378378 [2024-11-13 13:36:09,785 INFO L175 Difference]: Start difference. First operand has 35 places, 37 transitions, 78 flow. Second operand 4 states and 87 transitions. [2024-11-13 13:36:09,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 36 transitions, 118 flow [2024-11-13 13:36:09,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 36 transitions, 118 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 13:36:09,795 INFO L231 Difference]: Finished difference. Result has 39 places, 36 transitions, 96 flow [2024-11-13 13:36:09,801 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=39, PETRI_TRANSITIONS=36} [2024-11-13 13:36:09,808 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2024-11-13 13:36:09,808 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 36 transitions, 96 flow [2024-11-13 13:36:09,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:09,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:09,809 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-13 13:36:09,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:36:09,810 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-13 13:36:09,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:09,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1003827481, now seen corresponding path program 1 times [2024-11-13 13:36:09,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:09,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292238684] [2024-11-13 13:36:09,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:09,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:10,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:10,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:10,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292238684] [2024-11-13 13:36:10,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292238684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:36:10,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798504183] [2024-11-13 13:36:10,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:10,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:10,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:10,172 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:10,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:36:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:10,324 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:36:10,329 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:10,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:10,462 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:36:10,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798504183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:10,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:36:10,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-13 13:36:10,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122587331] [2024-11-13 13:36:10,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:10,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:36:10,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:10,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:36:10,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:36:10,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 37 [2024-11-13 13:36:10,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:10,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:10,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 37 [2024-11-13 13:36:10,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:10,688 INFO L124 PetriNetUnfolderBase]: 25/101 cut-off events. [2024-11-13 13:36:10,688 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 13:36:10,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 101 events. 25/101 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 271 event pairs, 18 based on Foata normal form. 1/88 useless extension candidates. Maximal degree in co-relation 159. Up to 54 conditions per place. [2024-11-13 13:36:10,694 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 14 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-11-13 13:36:10,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 132 flow [2024-11-13 13:36:10,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:36:10,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:36:10,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-11-13 13:36:10,699 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-13 13:36:10,699 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 96 flow. Second operand 6 states and 111 transitions. [2024-11-13 13:36:10,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 132 flow [2024-11-13 13:36:10,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 35 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:36:10,703 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 102 flow [2024-11-13 13:36:10,704 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-11-13 13:36:10,705 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2024-11-13 13:36:10,705 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 102 flow [2024-11-13 13:36:10,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:10,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:10,706 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-13 13:36:10,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:36:10,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:10,907 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-13 13:36:10,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:10,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1053881156, now seen corresponding path program 1 times [2024-11-13 13:36:10,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:10,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548444047] [2024-11-13 13:36:10,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:10,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:10,979 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:36:10,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:10,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548444047] [2024-11-13 13:36:10,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548444047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:10,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:10,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:36:10,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199911650] [2024-11-13 13:36:10,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:10,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:36:10,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:10,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:36:10,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:36:10,988 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 37 [2024-11-13 13:36:10,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:10,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:10,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 37 [2024-11-13 13:36:10,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:11,076 INFO L124 PetriNetUnfolderBase]: 25/100 cut-off events. [2024-11-13 13:36:11,076 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-13 13:36:11,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 100 events. 25/100 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 271 event pairs, 18 based on Foata normal form. 1/88 useless extension candidates. Maximal degree in co-relation 155. Up to 57 conditions per place. [2024-11-13 13:36:11,078 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 15 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2024-11-13 13:36:11,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 34 transitions, 136 flow [2024-11-13 13:36:11,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:36:11,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:36:11,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-11-13 13:36:11,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2024-11-13 13:36:11,080 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 102 flow. Second operand 3 states and 63 transitions. [2024-11-13 13:36:11,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 34 transitions, 136 flow [2024-11-13 13:36:11,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 34 transitions, 114 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-13 13:36:11,082 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 84 flow [2024-11-13 13:36:11,083 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2024-11-13 13:36:11,084 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2024-11-13 13:36:11,084 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 84 flow [2024-11-13 13:36:11,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:11,084 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:11,085 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:11,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:36:11,085 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-13 13:36:11,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:11,086 INFO L85 PathProgramCache]: Analyzing trace with hash -831096345, now seen corresponding path program 1 times [2024-11-13 13:36:11,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:11,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765935127] [2024-11-13 13:36:11,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:11,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:11,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:11,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:11,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765935127] [2024-11-13 13:36:11,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765935127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:36:11,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670890772] [2024-11-13 13:36:11,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:11,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:11,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:11,290 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:11,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:36:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:11,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:36:11,438 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:11,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:11,484 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:36:11,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:11,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670890772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:36:11,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:36:11,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-13 13:36:11,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078706226] [2024-11-13 13:36:11,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:36:11,538 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:36:11,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:11,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:36:11,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:36:11,560 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 37 [2024-11-13 13:36:11,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 84 flow. Second operand has 10 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:11,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:11,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 37 [2024-11-13 13:36:11,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:11,763 INFO L124 PetriNetUnfolderBase]: 25/104 cut-off events. [2024-11-13 13:36:11,764 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2024-11-13 13:36:11,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 104 events. 25/104 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 268 event pairs, 18 based on Foata normal form. 2/94 useless extension candidates. Maximal degree in co-relation 148. Up to 55 conditions per place. [2024-11-13 13:36:11,765 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 15 selfloop transitions, 7 changer transitions 0/37 dead transitions. [2024-11-13 13:36:11,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 37 transitions, 143 flow [2024-11-13 13:36:11,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:36:11,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 13:36:11,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-11-13 13:36:11,770 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4980694980694981 [2024-11-13 13:36:11,770 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 84 flow. Second operand 7 states and 129 transitions. [2024-11-13 13:36:11,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 37 transitions, 143 flow [2024-11-13 13:36:11,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 129 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:36:11,772 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 110 flow [2024-11-13 13:36:11,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=110, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2024-11-13 13:36:11,773 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2024-11-13 13:36:11,773 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 110 flow [2024-11-13 13:36:11,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:11,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:11,774 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:11,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:36:11,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:11,976 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-13 13:36:11,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:11,976 INFO L85 PathProgramCache]: Analyzing trace with hash -298488857, now seen corresponding path program 2 times [2024-11-13 13:36:11,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:11,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905806818] [2024-11-13 13:36:11,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:11,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:12,219 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:36:12,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:12,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905806818] [2024-11-13 13:36:12,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905806818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:12,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:12,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:36:12,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168407963] [2024-11-13 13:36:12,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:12,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:36:12,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:12,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:36:12,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:36:12,239 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 37 [2024-11-13 13:36:12,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:12,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:12,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 37 [2024-11-13 13:36:12,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:12,322 INFO L124 PetriNetUnfolderBase]: 27/103 cut-off events. [2024-11-13 13:36:12,322 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-13 13:36:12,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 103 events. 27/103 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 250 event pairs, 2 based on Foata normal form. 3/100 useless extension candidates. Maximal degree in co-relation 154. Up to 48 conditions per place. [2024-11-13 13:36:12,323 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 23 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2024-11-13 13:36:12,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 162 flow [2024-11-13 13:36:12,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:36:12,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:36:12,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2024-11-13 13:36:12,324 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5945945945945946 [2024-11-13 13:36:12,324 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 110 flow. Second operand 3 states and 66 transitions. [2024-11-13 13:36:12,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 162 flow [2024-11-13 13:36:12,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:36:12,326 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 108 flow [2024-11-13 13:36:12,327 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2024-11-13 13:36:12,328 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2024-11-13 13:36:12,328 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 108 flow [2024-11-13 13:36:12,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:12,328 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:12,329 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-11-13 13:36:12,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:36:12,329 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-13 13:36:12,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:12,329 INFO L85 PathProgramCache]: Analyzing trace with hash -663240352, now seen corresponding path program 1 times [2024-11-13 13:36:12,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:12,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679841392] [2024-11-13 13:36:12,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:12,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:36:12,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:12,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679841392] [2024-11-13 13:36:12,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679841392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:36:12,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166594719] [2024-11-13 13:36:12,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:12,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:12,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:12,536 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:12,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:36:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:12,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:36:12,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:12,727 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:36:12,728 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:36:12,884 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:36:12,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166594719] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:36:12,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:36:12,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-13 13:36:12,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392378936] [2024-11-13 13:36:12,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:36:12,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 13:36:12,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:12,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 13:36:12,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:36:12,916 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 37 [2024-11-13 13:36:12,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 108 flow. Second operand has 15 states, 15 states have (on average 16.333333333333332) internal successors, (245), 15 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:12,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:12,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 37 [2024-11-13 13:36:12,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:13,199 INFO L124 PetriNetUnfolderBase]: 23/103 cut-off events. [2024-11-13 13:36:13,199 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-13 13:36:13,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 103 events. 23/103 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 232 event pairs, 18 based on Foata normal form. 3/95 useless extension candidates. Maximal degree in co-relation 146. Up to 55 conditions per place. [2024-11-13 13:36:13,202 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 15 selfloop transitions, 13 changer transitions 0/42 dead transitions. [2024-11-13 13:36:13,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 42 transitions, 200 flow [2024-11-13 13:36:13,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 13:36:13,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 13:36:13,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 226 transitions. [2024-11-13 13:36:13,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4698544698544699 [2024-11-13 13:36:13,205 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 108 flow. Second operand 13 states and 226 transitions. [2024-11-13 13:36:13,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 42 transitions, 200 flow [2024-11-13 13:36:13,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 42 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:36:13,211 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 181 flow [2024-11-13 13:36:13,212 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=181, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2024-11-13 13:36:13,213 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 20 predicate places. [2024-11-13 13:36:13,213 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 181 flow [2024-11-13 13:36:13,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 16.333333333333332) internal successors, (245), 15 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:13,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:13,214 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1] [2024-11-13 13:36:13,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:36:13,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:13,415 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 8 more)] === [2024-11-13 13:36:13,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:13,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1717639728, now seen corresponding path program 2 times [2024-11-13 13:36:13,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:13,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030475590] [2024-11-13 13:36:13,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:13,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:36:13,480 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:36:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:36:13,553 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:36:13,553 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:36:13,555 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2024-11-13 13:36:13,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 11 remaining) [2024-11-13 13:36:13,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 11 remaining) [2024-11-13 13:36:13,557 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 11 remaining) [2024-11-13 13:36:13,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 11 remaining) [2024-11-13 13:36:13,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 11 remaining) [2024-11-13 13:36:13,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 11 remaining) [2024-11-13 13:36:13,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 11 remaining) [2024-11-13 13:36:13,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 11 remaining) [2024-11-13 13:36:13,558 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 11 remaining) [2024-11-13 13:36:13,560 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 11 remaining) [2024-11-13 13:36:13,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:36:13,561 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-11-13 13:36:13,564 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:36:13,564 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-13 13:36:13,613 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:36:13,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 63 transitions, 136 flow [2024-11-13 13:36:13,631 INFO L124 PetriNetUnfolderBase]: 9/68 cut-off events. [2024-11-13 13:36:13,631 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 13:36:13,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 68 events. 9/68 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 197 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2024-11-13 13:36:13,636 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 63 transitions, 136 flow [2024-11-13 13:36:13,637 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 63 transitions, 136 flow [2024-11-13 13:36:13,638 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:36:13,638 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;@364e598c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:36:13,639 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-13 13:36:13,642 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:36:13,643 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-13 13:36:13,644 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:36:13,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:13,644 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 13:36:13,644 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-13 13:36:13,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:13,644 INFO L85 PathProgramCache]: Analyzing trace with hash 384584, now seen corresponding path program 1 times [2024-11-13 13:36:13,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:13,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379427812] [2024-11-13 13:36:13,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:13,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:13,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:13,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379427812] [2024-11-13 13:36:13,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379427812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:13,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:13,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:36:13,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604123314] [2024-11-13 13:36:13,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:13,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:36:13,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:13,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:36:13,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:36:13,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2024-11-13 13:36:13,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 63 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:13,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:13,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2024-11-13 13:36:13,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:14,069 INFO L124 PetriNetUnfolderBase]: 545/1248 cut-off events. [2024-11-13 13:36:14,070 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-13 13:36:14,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2154 conditions, 1248 events. 545/1248 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7712 event pairs, 468 based on Foata normal form. 158/1259 useless extension candidates. Maximal degree in co-relation 1071. Up to 869 conditions per place. [2024-11-13 13:36:14,080 INFO L140 encePairwiseOnDemand]: 52/63 looper letters, 29 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2024-11-13 13:36:14,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 194 flow [2024-11-13 13:36:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:36:14,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:36:14,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-11-13 13:36:14,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6031746031746031 [2024-11-13 13:36:14,082 INFO L175 Difference]: Start difference. First operand has 59 places, 63 transitions, 136 flow. Second operand 4 states and 152 transitions. [2024-11-13 13:36:14,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 194 flow [2024-11-13 13:36:14,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 194 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 13:36:14,084 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 150 flow [2024-11-13 13:36:14,085 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2024-11-13 13:36:14,086 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 4 predicate places. [2024-11-13 13:36:14,086 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 150 flow [2024-11-13 13:36:14,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:14,086 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:14,087 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-13 13:36:14,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 13:36:14,087 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-13 13:36:14,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:14,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1427382087, now seen corresponding path program 1 times [2024-11-13 13:36:14,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:14,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674044662] [2024-11-13 13:36:14,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:14,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:14,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:14,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:14,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674044662] [2024-11-13 13:36:14,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674044662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:36:14,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014998463] [2024-11-13 13:36:14,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:14,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:14,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:14,182 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:14,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:36:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:14,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:36:14,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:14,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:14,340 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:36:14,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014998463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:14,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:36:14,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-13 13:36:14,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125275500] [2024-11-13 13:36:14,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:14,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:36:14,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:14,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:36:14,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:36:14,353 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2024-11-13 13:36:14,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:14,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:14,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2024-11-13 13:36:14,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:14,722 INFO L124 PetriNetUnfolderBase]: 545/1247 cut-off events. [2024-11-13 13:36:14,722 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-13 13:36:14,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2164 conditions, 1247 events. 545/1247 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7749 event pairs, 468 based on Foata normal form. 1/1101 useless extension candidates. Maximal degree in co-relation 2145. Up to 864 conditions per place. [2024-11-13 13:36:14,735 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 25 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2024-11-13 13:36:14,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 59 transitions, 208 flow [2024-11-13 13:36:14,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:36:14,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:36:14,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2024-11-13 13:36:14,737 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5291005291005291 [2024-11-13 13:36:14,737 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 150 flow. Second operand 6 states and 200 transitions. [2024-11-13 13:36:14,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 59 transitions, 208 flow [2024-11-13 13:36:14,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 59 transitions, 206 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:36:14,742 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 156 flow [2024-11-13 13:36:14,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-11-13 13:36:14,743 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 7 predicate places. [2024-11-13 13:36:14,743 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 156 flow [2024-11-13 13:36:14,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:14,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:14,744 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-13 13:36:14,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 13:36:14,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:14,945 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-13 13:36:14,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:14,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1299171357, now seen corresponding path program 1 times [2024-11-13 13:36:14,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:14,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948030504] [2024-11-13 13:36:14,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:14,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:36:14,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:14,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948030504] [2024-11-13 13:36:14,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948030504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:14,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:14,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:36:14,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590107585] [2024-11-13 13:36:14,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:14,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:36:15,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:15,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:36:15,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:36:15,011 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2024-11-13 13:36:15,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:15,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:15,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2024-11-13 13:36:15,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:15,290 INFO L124 PetriNetUnfolderBase]: 545/1246 cut-off events. [2024-11-13 13:36:15,290 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-13 13:36:15,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2166 conditions, 1246 events. 545/1246 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7753 event pairs, 468 based on Foata normal form. 1/1101 useless extension candidates. Maximal degree in co-relation 2141. Up to 867 conditions per place. [2024-11-13 13:36:15,302 INFO L140 encePairwiseOnDemand]: 60/63 looper letters, 26 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2024-11-13 13:36:15,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 58 transitions, 212 flow [2024-11-13 13:36:15,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:36:15,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:36:15,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-11-13 13:36:15,304 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5978835978835979 [2024-11-13 13:36:15,304 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 156 flow. Second operand 3 states and 113 transitions. [2024-11-13 13:36:15,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 58 transitions, 212 flow [2024-11-13 13:36:15,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 190 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-13 13:36:15,307 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 138 flow [2024-11-13 13:36:15,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-11-13 13:36:15,309 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2024-11-13 13:36:15,309 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 138 flow [2024-11-13 13:36:15,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:15,309 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:15,309 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:15,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 13:36:15,310 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-13 13:36:15,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:15,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1333230495, now seen corresponding path program 1 times [2024-11-13 13:36:15,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:15,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648916314] [2024-11-13 13:36:15,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:15,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:15,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:15,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:15,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:15,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648916314] [2024-11-13 13:36:15,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648916314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:36:15,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101964364] [2024-11-13 13:36:15,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:15,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:15,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:15,399 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:15,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:36:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:15,513 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:36:15,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:15,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:15,540 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:36:15,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:15,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101964364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:36:15,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:36:15,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-13 13:36:15,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375365605] [2024-11-13 13:36:15,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:36:15,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:36:15,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:15,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:36:15,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:36:15,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2024-11-13 13:36:15,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 138 flow. Second operand has 10 states, 10 states have (on average 29.4) internal successors, (294), 10 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:15,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:15,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2024-11-13 13:36:15,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:15,936 INFO L124 PetriNetUnfolderBase]: 545/1250 cut-off events. [2024-11-13 13:36:15,937 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-11-13 13:36:15,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2169 conditions, 1250 events. 545/1250 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7743 event pairs, 468 based on Foata normal form. 2/1107 useless extension candidates. Maximal degree in co-relation 2134. Up to 865 conditions per place. [2024-11-13 13:36:15,949 INFO L140 encePairwiseOnDemand]: 59/63 looper letters, 26 selfloop transitions, 7 changer transitions 0/61 dead transitions. [2024-11-13 13:36:15,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 61 transitions, 219 flow [2024-11-13 13:36:15,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:36:15,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 13:36:15,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 231 transitions. [2024-11-13 13:36:15,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-11-13 13:36:15,952 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 138 flow. Second operand 7 states and 231 transitions. [2024-11-13 13:36:15,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 61 transitions, 219 flow [2024-11-13 13:36:15,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 61 transitions, 205 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:36:15,956 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 164 flow [2024-11-13 13:36:15,956 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=164, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2024-11-13 13:36:15,957 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 8 predicate places. [2024-11-13 13:36:15,959 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 164 flow [2024-11-13 13:36:15,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 29.4) internal successors, (294), 10 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:15,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:15,960 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:15,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 13:36:16,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 13:36:16,161 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-13 13:36:16,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:16,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2065388031, now seen corresponding path program 2 times [2024-11-13 13:36:16,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:16,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374691079] [2024-11-13 13:36:16,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:16,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:16,257 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:36:16,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:16,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374691079] [2024-11-13 13:36:16,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374691079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:16,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:16,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:36:16,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611961390] [2024-11-13 13:36:16,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:16,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:36:16,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:16,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:36:16,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:36:16,267 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2024-11-13 13:36:16,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:16,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:16,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2024-11-13 13:36:16,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:16,497 INFO L124 PetriNetUnfolderBase]: 624/1403 cut-off events. [2024-11-13 13:36:16,498 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-11-13 13:36:16,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2418 conditions, 1403 events. 624/1403 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8639 event pairs, 68 based on Foata normal form. 33/1343 useless extension candidates. Maximal degree in co-relation 2378. Up to 807 conditions per place. [2024-11-13 13:36:16,508 INFO L140 encePairwiseOnDemand]: 60/63 looper letters, 45 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2024-11-13 13:36:16,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 73 transitions, 287 flow [2024-11-13 13:36:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:36:16,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:36:16,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2024-11-13 13:36:16,509 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.671957671957672 [2024-11-13 13:36:16,509 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 164 flow. Second operand 3 states and 127 transitions. [2024-11-13 13:36:16,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 73 transitions, 287 flow [2024-11-13 13:36:16,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 73 transitions, 283 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:36:16,512 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 162 flow [2024-11-13 13:36:16,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-11-13 13:36:16,515 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 7 predicate places. [2024-11-13 13:36:16,515 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 162 flow [2024-11-13 13:36:16,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:16,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:16,516 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:16,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 13:36:16,516 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-13 13:36:16,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:16,517 INFO L85 PathProgramCache]: Analyzing trace with hash -397480049, now seen corresponding path program 1 times [2024-11-13 13:36:16,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:16,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32853989] [2024-11-13 13:36:16,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:16,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:36:16,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:16,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32853989] [2024-11-13 13:36:16,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32853989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:16,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:16,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:36:16,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716608437] [2024-11-13 13:36:16,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:16,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:36:16,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:16,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:36:16,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:36:16,620 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2024-11-13 13:36:16,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:16,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:16,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2024-11-13 13:36:16,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:16,828 INFO L124 PetriNetUnfolderBase]: 559/1245 cut-off events. [2024-11-13 13:36:16,828 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2024-11-13 13:36:16,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2236 conditions, 1245 events. 559/1245 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 7235 event pairs, 212 based on Foata normal form. 33/1182 useless extension candidates. Maximal degree in co-relation 2197. Up to 721 conditions per place. [2024-11-13 13:36:16,835 INFO L140 encePairwiseOnDemand]: 60/63 looper letters, 44 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2024-11-13 13:36:16,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 72 transitions, 283 flow [2024-11-13 13:36:16,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:36:16,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:36:16,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-11-13 13:36:16,836 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-13 13:36:16,836 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 162 flow. Second operand 3 states and 126 transitions. [2024-11-13 13:36:16,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 72 transitions, 283 flow [2024-11-13 13:36:16,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 72 transitions, 279 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:36:16,840 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 160 flow [2024-11-13 13:36:16,840 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2024-11-13 13:36:16,841 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 6 predicate places. [2024-11-13 13:36:16,841 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 160 flow [2024-11-13 13:36:16,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:16,841 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:16,841 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:16,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 13:36:16,841 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-13 13:36:16,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:16,842 INFO L85 PathProgramCache]: Analyzing trace with hash 230032228, now seen corresponding path program 1 times [2024-11-13 13:36:16,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:16,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141164842] [2024-11-13 13:36:16,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:16,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:16,931 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 13:36:16,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:16,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141164842] [2024-11-13 13:36:16,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141164842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:16,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:16,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:36:16,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149152036] [2024-11-13 13:36:16,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:16,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:36:16,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:16,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:36:16,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:36:16,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2024-11-13 13:36:16,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:16,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:16,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2024-11-13 13:36:16,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:17,168 INFO L124 PetriNetUnfolderBase]: 613/1355 cut-off events. [2024-11-13 13:36:17,169 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2024-11-13 13:36:17,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2432 conditions, 1355 events. 613/1355 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8203 event pairs, 92 based on Foata normal form. 30/1302 useless extension candidates. Maximal degree in co-relation 2393. Up to 750 conditions per place. [2024-11-13 13:36:17,176 INFO L140 encePairwiseOnDemand]: 60/63 looper letters, 44 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-13 13:36:17,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 70 transitions, 278 flow [2024-11-13 13:36:17,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:36:17,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:36:17,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 126 transitions. [2024-11-13 13:36:17,178 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-13 13:36:17,178 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 160 flow. Second operand 3 states and 126 transitions. [2024-11-13 13:36:17,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 70 transitions, 278 flow [2024-11-13 13:36:17,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:36:17,180 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 158 flow [2024-11-13 13:36:17,180 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-11-13 13:36:17,182 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 5 predicate places. [2024-11-13 13:36:17,182 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 158 flow [2024-11-13 13:36:17,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:17,182 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:17,183 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-11-13 13:36:17,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 13:36:17,183 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-13 13:36:17,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:17,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1458955813, now seen corresponding path program 1 times [2024-11-13 13:36:17,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:17,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777942933] [2024-11-13 13:36:17,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:17,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:17,340 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:36:17,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:17,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777942933] [2024-11-13 13:36:17,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777942933] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:36:17,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408250882] [2024-11-13 13:36:17,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:17,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:17,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:17,344 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:17,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:36:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:17,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:36:17,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:36:17,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:36:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 13:36:17,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408250882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:36:17,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:36:17,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-13 13:36:17,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022177529] [2024-11-13 13:36:17,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:36:17,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 13:36:17,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:17,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 13:36:17,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:36:17,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 63 [2024-11-13 13:36:17,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 158 flow. Second operand has 15 states, 15 states have (on average 29.4) internal successors, (441), 15 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:17,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:17,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 63 [2024-11-13 13:36:17,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:17,940 INFO L124 PetriNetUnfolderBase]: 545/1245 cut-off events. [2024-11-13 13:36:17,940 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-11-13 13:36:17,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2248 conditions, 1245 events. 545/1245 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7575 event pairs, 468 based on Foata normal form. 3/1117 useless extension candidates. Maximal degree in co-relation 2182. Up to 865 conditions per place. [2024-11-13 13:36:17,948 INFO L140 encePairwiseOnDemand]: 59/63 looper letters, 26 selfloop transitions, 13 changer transitions 0/64 dead transitions. [2024-11-13 13:36:17,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 64 transitions, 272 flow [2024-11-13 13:36:17,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 13:36:17,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 13:36:17,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 406 transitions. [2024-11-13 13:36:17,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49572649572649574 [2024-11-13 13:36:17,952 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 158 flow. Second operand 13 states and 406 transitions. [2024-11-13 13:36:17,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 64 transitions, 272 flow [2024-11-13 13:36:17,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 64 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:36:17,955 INFO L231 Difference]: Finished difference. Result has 77 places, 64 transitions, 231 flow [2024-11-13 13:36:17,955 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=231, PETRI_PLACES=77, PETRI_TRANSITIONS=64} [2024-11-13 13:36:17,955 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 18 predicate places. [2024-11-13 13:36:17,955 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 64 transitions, 231 flow [2024-11-13 13:36:17,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 29.4) internal successors, (441), 15 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:17,956 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:17,956 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 3, 2, 1, 1, 1, 1, 1] [2024-11-13 13:36:17,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 13:36:18,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 13:36:18,161 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2024-11-13 13:36:18,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:18,162 INFO L85 PathProgramCache]: Analyzing trace with hash -442851348, now seen corresponding path program 2 times [2024-11-13 13:36:18,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:18,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424377545] [2024-11-13 13:36:18,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:18,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:36:18,196 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:36:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:36:18,224 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:36:18,225 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:36:18,225 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2024-11-13 13:36:18,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2024-11-13 13:36:18,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2024-11-13 13:36:18,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2024-11-13 13:36:18,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2024-11-13 13:36:18,226 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2024-11-13 13:36:18,226 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 15 remaining) [2024-11-13 13:36:18,226 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 15 remaining) [2024-11-13 13:36:18,226 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 15 remaining) [2024-11-13 13:36:18,226 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2024-11-13 13:36:18,226 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2024-11-13 13:36:18,226 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2024-11-13 13:36:18,226 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2024-11-13 13:36:18,227 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2024-11-13 13:36:18,227 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2024-11-13 13:36:18,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 13:36:18,227 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2024-11-13 13:36:18,228 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:36:18,228 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-13 13:36:18,269 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:36:18,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 89 transitions, 196 flow [2024-11-13 13:36:18,284 INFO L124 PetriNetUnfolderBase]: 13/97 cut-off events. [2024-11-13 13:36:18,285 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-13 13:36:18,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 97 events. 13/97 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 341 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 78. Up to 4 conditions per place. [2024-11-13 13:36:18,285 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 89 transitions, 196 flow [2024-11-13 13:36:18,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 89 transitions, 196 flow [2024-11-13 13:36:18,288 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:36:18,288 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;@364e598c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:36:18,288 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-13 13:36:18,290 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:36:18,290 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-13 13:36:18,290 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:36:18,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:18,290 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 13:36:18,290 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:36:18,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:18,291 INFO L85 PathProgramCache]: Analyzing trace with hash 472961, now seen corresponding path program 1 times [2024-11-13 13:36:18,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:18,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958262743] [2024-11-13 13:36:18,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:18,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:18,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:18,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:18,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958262743] [2024-11-13 13:36:18,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958262743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:18,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:18,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:36:18,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822854149] [2024-11-13 13:36:18,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:18,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:36:18,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:18,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:36:18,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:36:18,338 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 89 [2024-11-13 13:36:18,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 89 transitions, 196 flow. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:18,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:18,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 89 [2024-11-13 13:36:18,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:20,256 INFO L124 PetriNetUnfolderBase]: 8717/15445 cut-off events. [2024-11-13 13:36:20,257 INFO L125 PetriNetUnfolderBase]: For 670/670 co-relation queries the response was YES. [2024-11-13 13:36:20,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27852 conditions, 15445 events. 8717/15445 cut-off events. For 670/670 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 125337 event pairs, 7668 based on Foata normal form. 2506/16439 useless extension candidates. Maximal degree in co-relation 8049. Up to 11969 conditions per place. [2024-11-13 13:36:20,354 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 40 selfloop transitions, 3 changer transitions 0/84 dead transitions. [2024-11-13 13:36:20,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 84 transitions, 272 flow [2024-11-13 13:36:20,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:36:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:36:20,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 217 transitions. [2024-11-13 13:36:20,358 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6095505617977528 [2024-11-13 13:36:20,358 INFO L175 Difference]: Start difference. First operand has 83 places, 89 transitions, 196 flow. Second operand 4 states and 217 transitions. [2024-11-13 13:36:20,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 84 transitions, 272 flow [2024-11-13 13:36:20,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 84 transitions, 270 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-13 13:36:20,361 INFO L231 Difference]: Finished difference. Result has 87 places, 84 transitions, 204 flow [2024-11-13 13:36:20,362 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=204, PETRI_PLACES=87, PETRI_TRANSITIONS=84} [2024-11-13 13:36:20,363 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 4 predicate places. [2024-11-13 13:36:20,363 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 84 transitions, 204 flow [2024-11-13 13:36:20,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:20,363 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:20,363 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-13 13:36:20,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 13:36:20,364 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:36:20,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:20,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1205545497, now seen corresponding path program 1 times [2024-11-13 13:36:20,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:20,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198364287] [2024-11-13 13:36:20,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:20,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:20,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:20,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:20,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198364287] [2024-11-13 13:36:20,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198364287] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:36:20,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485643521] [2024-11-13 13:36:20,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:20,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:20,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:20,437 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:20,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:36:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:20,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:36:20,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:20,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:20,572 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:36:20,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485643521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:20,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:36:20,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-13 13:36:20,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571924783] [2024-11-13 13:36:20,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:20,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:36:20,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:20,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:36:20,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:36:20,581 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 89 [2024-11-13 13:36:20,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 84 transitions, 204 flow. Second operand has 6 states, 6 states have (on average 41.833333333333336) internal successors, (251), 6 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:20,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:20,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 89 [2024-11-13 13:36:20,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:22,398 INFO L124 PetriNetUnfolderBase]: 8717/15444 cut-off events. [2024-11-13 13:36:22,398 INFO L125 PetriNetUnfolderBase]: For 376/376 co-relation queries the response was YES. [2024-11-13 13:36:22,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27762 conditions, 15444 events. 8717/15444 cut-off events. For 376/376 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 125446 event pairs, 7668 based on Foata normal form. 1/13933 useless extension candidates. Maximal degree in co-relation 27742. Up to 11964 conditions per place. [2024-11-13 13:36:22,513 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 36 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2024-11-13 13:36:22,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 83 transitions, 284 flow [2024-11-13 13:36:22,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:36:22,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:36:22,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 289 transitions. [2024-11-13 13:36:22,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5411985018726592 [2024-11-13 13:36:22,516 INFO L175 Difference]: Start difference. First operand has 87 places, 84 transitions, 204 flow. Second operand 6 states and 289 transitions. [2024-11-13 13:36:22,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 83 transitions, 284 flow [2024-11-13 13:36:22,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 83 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:36:22,519 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 210 flow [2024-11-13 13:36:22,520 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=210, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2024-11-13 13:36:22,520 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 7 predicate places. [2024-11-13 13:36:22,521 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 210 flow [2024-11-13 13:36:22,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.833333333333336) internal successors, (251), 6 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:22,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:22,521 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-13 13:36:22,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 13:36:22,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 13:36:22,726 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:36:22,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:22,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1282794788, now seen corresponding path program 1 times [2024-11-13 13:36:22,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:22,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719757176] [2024-11-13 13:36:22,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:22,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:36:22,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:22,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719757176] [2024-11-13 13:36:22,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719757176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:22,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:22,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:36:22,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310161068] [2024-11-13 13:36:22,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:22,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:36:22,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:22,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:36:22,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:36:22,779 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 89 [2024-11-13 13:36:22,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:22,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:22,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 89 [2024-11-13 13:36:22,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:24,103 INFO L124 PetriNetUnfolderBase]: 8717/15443 cut-off events. [2024-11-13 13:36:24,103 INFO L125 PetriNetUnfolderBase]: For 381/381 co-relation queries the response was YES. [2024-11-13 13:36:24,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27764 conditions, 15443 events. 8717/15443 cut-off events. For 381/381 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 125245 event pairs, 7668 based on Foata normal form. 1/13933 useless extension candidates. Maximal degree in co-relation 27738. Up to 11967 conditions per place. [2024-11-13 13:36:24,193 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 37 selfloop transitions, 4 changer transitions 0/82 dead transitions. [2024-11-13 13:36:24,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 82 transitions, 288 flow [2024-11-13 13:36:24,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:36:24,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:36:24,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-13 13:36:24,194 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6104868913857678 [2024-11-13 13:36:24,195 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 210 flow. Second operand 3 states and 163 transitions. [2024-11-13 13:36:24,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 82 transitions, 288 flow [2024-11-13 13:36:24,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 82 transitions, 266 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-13 13:36:24,197 INFO L231 Difference]: Finished difference. Result has 85 places, 82 transitions, 192 flow [2024-11-13 13:36:24,197 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=85, PETRI_TRANSITIONS=82} [2024-11-13 13:36:24,198 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 2 predicate places. [2024-11-13 13:36:24,198 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 82 transitions, 192 flow [2024-11-13 13:36:24,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:24,198 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:24,198 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:24,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 13:36:24,199 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:36:24,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:24,199 INFO L85 PathProgramCache]: Analyzing trace with hash -108729007, now seen corresponding path program 1 times [2024-11-13 13:36:24,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:24,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853730964] [2024-11-13 13:36:24,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:24,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:24,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:24,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:24,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853730964] [2024-11-13 13:36:24,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853730964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:36:24,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390764706] [2024-11-13 13:36:24,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:24,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:24,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:24,252 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:24,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:36:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:24,358 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:36:24,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:24,378 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:36:24,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:24,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390764706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:36:24,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:36:24,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-13 13:36:24,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498152118] [2024-11-13 13:36:24,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:36:24,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:36:24,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:24,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:36:24,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:36:24,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 89 [2024-11-13 13:36:24,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 82 transitions, 192 flow. Second operand has 10 states, 10 states have (on average 42.4) internal successors, (424), 10 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:24,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:24,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 89 [2024-11-13 13:36:24,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:25,936 INFO L124 PetriNetUnfolderBase]: 8717/15447 cut-off events. [2024-11-13 13:36:25,936 INFO L125 PetriNetUnfolderBase]: For 383/383 co-relation queries the response was YES. [2024-11-13 13:36:25,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27767 conditions, 15447 events. 8717/15447 cut-off events. For 383/383 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 125331 event pairs, 7668 based on Foata normal form. 2/13939 useless extension candidates. Maximal degree in co-relation 27731. Up to 11965 conditions per place. [2024-11-13 13:36:26,031 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 37 selfloop transitions, 7 changer transitions 0/85 dead transitions. [2024-11-13 13:36:26,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 85 transitions, 295 flow [2024-11-13 13:36:26,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:36:26,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 13:36:26,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 333 transitions. [2024-11-13 13:36:26,033 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5345104333868379 [2024-11-13 13:36:26,034 INFO L175 Difference]: Start difference. First operand has 85 places, 82 transitions, 192 flow. Second operand 7 states and 333 transitions. [2024-11-13 13:36:26,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 85 transitions, 295 flow [2024-11-13 13:36:26,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 85 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:36:26,037 INFO L231 Difference]: Finished difference. Result has 91 places, 85 transitions, 218 flow [2024-11-13 13:36:26,037 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=91, PETRI_TRANSITIONS=85} [2024-11-13 13:36:26,038 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 8 predicate places. [2024-11-13 13:36:26,038 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 85 transitions, 218 flow [2024-11-13 13:36:26,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 42.4) internal successors, (424), 10 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:26,038 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:26,039 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:26,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 13:36:26,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:26,239 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:36:26,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:26,241 INFO L85 PathProgramCache]: Analyzing trace with hash 837158481, now seen corresponding path program 2 times [2024-11-13 13:36:26,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:26,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828984986] [2024-11-13 13:36:26,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:26,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:26,338 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:36:26,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:26,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828984986] [2024-11-13 13:36:26,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828984986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:26,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:26,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:36:26,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891353529] [2024-11-13 13:36:26,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:26,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:36:26,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:26,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:36:26,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:36:26,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 89 [2024-11-13 13:36:26,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 85 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:26,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:26,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 89 [2024-11-13 13:36:26,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:27,928 INFO L124 PetriNetUnfolderBase]: 9720/16898 cut-off events. [2024-11-13 13:36:27,928 INFO L125 PetriNetUnfolderBase]: For 394/394 co-relation queries the response was YES. [2024-11-13 13:36:27,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30454 conditions, 16898 events. 9720/16898 cut-off events. For 394/394 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 134349 event pairs, 5096 based on Foata normal form. 333/16037 useless extension candidates. Maximal degree in co-relation 30413. Up to 11097 conditions per place. [2024-11-13 13:36:27,995 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 67 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2024-11-13 13:36:27,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 108 transitions, 412 flow [2024-11-13 13:36:27,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:36:27,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:36:27,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2024-11-13 13:36:27,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.704119850187266 [2024-11-13 13:36:27,996 INFO L175 Difference]: Start difference. First operand has 91 places, 85 transitions, 218 flow. Second operand 3 states and 188 transitions. [2024-11-13 13:36:27,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 108 transitions, 412 flow [2024-11-13 13:36:27,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 108 transitions, 408 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:36:28,000 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 216 flow [2024-11-13 13:36:28,000 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2024-11-13 13:36:28,001 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 7 predicate places. [2024-11-13 13:36:28,001 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 216 flow [2024-11-13 13:36:28,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:28,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:28,001 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:28,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-13 13:36:28,002 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:36:28,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:28,002 INFO L85 PathProgramCache]: Analyzing trace with hash 182109654, now seen corresponding path program 1 times [2024-11-13 13:36:28,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:28,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172043910] [2024-11-13 13:36:28,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:28,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:36:28,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:28,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172043910] [2024-11-13 13:36:28,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172043910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:28,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:28,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:36:28,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678353624] [2024-11-13 13:36:28,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:28,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:36:28,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:28,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:36:28,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:36:28,115 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 89 [2024-11-13 13:36:28,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:28,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:28,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 89 [2024-11-13 13:36:28,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:29,658 INFO L124 PetriNetUnfolderBase]: 8830/15390 cut-off events. [2024-11-13 13:36:29,658 INFO L125 PetriNetUnfolderBase]: For 993/993 co-relation queries the response was YES. [2024-11-13 13:36:29,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28382 conditions, 15390 events. 8830/15390 cut-off events. For 993/993 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 120367 event pairs, 4592 based on Foata normal form. 333/14631 useless extension candidates. Maximal degree in co-relation 28342. Up to 9901 conditions per place. [2024-11-13 13:36:29,737 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 66 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2024-11-13 13:36:29,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 107 transitions, 408 flow [2024-11-13 13:36:29,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:36:29,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:36:29,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-11-13 13:36:29,738 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.700374531835206 [2024-11-13 13:36:29,738 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 216 flow. Second operand 3 states and 187 transitions. [2024-11-13 13:36:29,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 107 transitions, 408 flow [2024-11-13 13:36:29,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 107 transitions, 404 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:36:29,742 INFO L231 Difference]: Finished difference. Result has 89 places, 83 transitions, 214 flow [2024-11-13 13:36:29,742 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=89, PETRI_TRANSITIONS=83} [2024-11-13 13:36:29,742 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 6 predicate places. [2024-11-13 13:36:29,742 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 83 transitions, 214 flow [2024-11-13 13:36:29,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:29,743 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:29,743 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:29,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-13 13:36:29,743 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:36:29,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:29,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1129983196, now seen corresponding path program 1 times [2024-11-13 13:36:29,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:29,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248873056] [2024-11-13 13:36:29,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:29,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:36:29,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:29,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248873056] [2024-11-13 13:36:29,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248873056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:36:29,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892255319] [2024-11-13 13:36:29,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:29,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:29,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:36:29,876 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:36:29,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:36:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:30,022 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:36:30,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:36:30,066 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:36:30,066 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:36:30,163 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:36:30,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892255319] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:36:30,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:36:30,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-13 13:36:30,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922469228] [2024-11-13 13:36:30,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:36:30,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 13:36:30,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:30,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 13:36:30,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:36:30,187 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 89 [2024-11-13 13:36:30,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 83 transitions, 214 flow. Second operand has 15 states, 15 states have (on average 42.46666666666667) internal successors, (637), 15 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:30,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:30,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 89 [2024-11-13 13:36:30,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:31,989 INFO L124 PetriNetUnfolderBase]: 8717/15454 cut-off events. [2024-11-13 13:36:31,989 INFO L125 PetriNetUnfolderBase]: For 997/997 co-relation queries the response was YES. [2024-11-13 13:36:32,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28464 conditions, 15454 events. 8717/15454 cut-off events. For 997/997 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 125302 event pairs, 7668 based on Foata normal form. 3/13949 useless extension candidates. Maximal degree in co-relation 28397. Up to 11965 conditions per place. [2024-11-13 13:36:32,087 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 37 selfloop transitions, 13 changer transitions 0/89 dead transitions. [2024-11-13 13:36:32,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 89 transitions, 350 flow [2024-11-13 13:36:32,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 13:36:32,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 13:36:32,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 586 transitions. [2024-11-13 13:36:32,091 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5064822817631807 [2024-11-13 13:36:32,091 INFO L175 Difference]: Start difference. First operand has 89 places, 83 transitions, 214 flow. Second operand 13 states and 586 transitions. [2024-11-13 13:36:32,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 89 transitions, 350 flow [2024-11-13 13:36:32,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 89 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:36:32,104 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 287 flow [2024-11-13 13:36:32,104 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=287, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2024-11-13 13:36:32,105 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 19 predicate places. [2024-11-13 13:36:32,105 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 287 flow [2024-11-13 13:36:32,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 42.46666666666667) internal successors, (637), 15 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:32,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:32,105 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:32,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 13:36:32,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:36:32,306 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:36:32,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:32,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1051789684, now seen corresponding path program 2 times [2024-11-13 13:36:32,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:32,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606417611] [2024-11-13 13:36:32,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:32,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:32,426 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-13 13:36:32,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:32,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606417611] [2024-11-13 13:36:32,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606417611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:32,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:32,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:36:32,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649393255] [2024-11-13 13:36:32,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:32,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:36:32,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:32,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:36:32,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:36:32,437 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 89 [2024-11-13 13:36:32,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 287 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 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) [2024-11-13 13:36:32,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:32,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 89 [2024-11-13 13:36:32,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:33,993 INFO L124 PetriNetUnfolderBase]: 9781/17102 cut-off events. [2024-11-13 13:36:33,993 INFO L125 PetriNetUnfolderBase]: For 429/429 co-relation queries the response was YES. [2024-11-13 13:36:34,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30689 conditions, 17102 events. 9781/17102 cut-off events. For 429/429 co-relation queries the response was YES. Maximal size of possible extension queue 722. Compared 136202 event pairs, 2972 based on Foata normal form. 330/16357 useless extension candidates. Maximal degree in co-relation 30602. Up to 11040 conditions per place. [2024-11-13 13:36:34,087 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 72 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2024-11-13 13:36:34,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 111 transitions, 484 flow [2024-11-13 13:36:34,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:36:34,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:36:34,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-11-13 13:36:34,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.700374531835206 [2024-11-13 13:36:34,088 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 287 flow. Second operand 3 states and 187 transitions. [2024-11-13 13:36:34,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 111 transitions, 484 flow [2024-11-13 13:36:34,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 111 transitions, 474 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-13 13:36:34,091 INFO L231 Difference]: Finished difference. Result has 99 places, 88 transitions, 279 flow [2024-11-13 13:36:34,092 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2024-11-13 13:36:34,092 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 16 predicate places. [2024-11-13 13:36:34,092 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 279 flow [2024-11-13 13:36:34,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 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) [2024-11-13 13:36:34,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:34,093 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:34,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-13 13:36:34,093 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:36:34,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:34,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1754258708, now seen corresponding path program 1 times [2024-11-13 13:36:34,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:34,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311408066] [2024-11-13 13:36:34,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:34,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:34,219 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-13 13:36:34,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:34,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311408066] [2024-11-13 13:36:34,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311408066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:34,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:34,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:36:34,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127485497] [2024-11-13 13:36:34,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:34,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:36:34,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:34,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:36:34,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:36:34,231 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 89 [2024-11-13 13:36:34,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 279 flow. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 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) [2024-11-13 13:36:34,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:34,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 89 [2024-11-13 13:36:34,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:36,017 INFO L124 PetriNetUnfolderBase]: 8891/15672 cut-off events. [2024-11-13 13:36:36,018 INFO L125 PetriNetUnfolderBase]: For 928/928 co-relation queries the response was YES. [2024-11-13 13:36:36,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28695 conditions, 15672 events. 8891/15672 cut-off events. For 928/928 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 123437 event pairs, 2732 based on Foata normal form. 330/15005 useless extension candidates. Maximal degree in co-relation 28612. Up to 9850 conditions per place. [2024-11-13 13:36:36,132 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 71 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2024-11-13 13:36:36,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 110 transitions, 474 flow [2024-11-13 13:36:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:36:36,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:36:36,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2024-11-13 13:36:36,134 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6966292134831461 [2024-11-13 13:36:36,134 INFO L175 Difference]: Start difference. First operand has 99 places, 88 transitions, 279 flow. Second operand 3 states and 186 transitions. [2024-11-13 13:36:36,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 110 transitions, 474 flow [2024-11-13 13:36:36,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 110 transitions, 470 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:36:36,141 INFO L231 Difference]: Finished difference. Result has 98 places, 87 transitions, 277 flow [2024-11-13 13:36:36,142 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=98, PETRI_TRANSITIONS=87} [2024-11-13 13:36:36,142 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 15 predicate places. [2024-11-13 13:36:36,142 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 87 transitions, 277 flow [2024-11-13 13:36:36,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 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) [2024-11-13 13:36:36,143 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:36,143 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:36,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-13 13:36:36,143 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:36:36,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:36,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1185442512, now seen corresponding path program 1 times [2024-11-13 13:36:36,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:36,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199509983] [2024-11-13 13:36:36,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:36,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:36,310 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 13:36:36,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:36,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199509983] [2024-11-13 13:36:36,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199509983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:36,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:36,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:36:36,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936198014] [2024-11-13 13:36:36,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:36,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:36:36,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:36,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:36:36,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:36:36,323 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 89 [2024-11-13 13:36:36,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 87 transitions, 277 flow. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:36,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:36,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 89 [2024-11-13 13:36:36,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:38,204 INFO L124 PetriNetUnfolderBase]: 9669/16553 cut-off events. [2024-11-13 13:36:38,205 INFO L125 PetriNetUnfolderBase]: For 1016/1016 co-relation queries the response was YES. [2024-11-13 13:36:38,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30871 conditions, 16553 events. 9669/16553 cut-off events. For 1016/1016 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 129763 event pairs, 4088 based on Foata normal form. 333/15575 useless extension candidates. Maximal degree in co-relation 30788. Up to 8705 conditions per place. [2024-11-13 13:36:38,336 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 95 selfloop transitions, 4 changer transitions 0/134 dead transitions. [2024-11-13 13:36:38,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 134 transitions, 597 flow [2024-11-13 13:36:38,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:36:38,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:36:38,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 253 transitions. [2024-11-13 13:36:38,337 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7106741573033708 [2024-11-13 13:36:38,337 INFO L175 Difference]: Start difference. First operand has 98 places, 87 transitions, 277 flow. Second operand 4 states and 253 transitions. [2024-11-13 13:36:38,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 134 transitions, 597 flow [2024-11-13 13:36:38,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 134 transitions, 585 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:36:38,359 INFO L231 Difference]: Finished difference. Result has 98 places, 86 transitions, 279 flow [2024-11-13 13:36:38,360 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=279, PETRI_PLACES=98, PETRI_TRANSITIONS=86} [2024-11-13 13:36:38,360 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 15 predicate places. [2024-11-13 13:36:38,360 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 86 transitions, 279 flow [2024-11-13 13:36:38,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:38,361 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:38,361 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:38,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-13 13:36:38,361 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:36:38,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:38,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1905988325, now seen corresponding path program 1 times [2024-11-13 13:36:38,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:38,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465495653] [2024-11-13 13:36:38,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:38,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:38,510 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 13:36:38,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:38,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465495653] [2024-11-13 13:36:38,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465495653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:38,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:38,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:36:38,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334451803] [2024-11-13 13:36:38,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:38,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:36:38,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:38,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:36:38,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:36:38,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 89 [2024-11-13 13:36:38,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 86 transitions, 279 flow. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:38,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:38,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 89 [2024-11-13 13:36:38,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:41,384 INFO L124 PetriNetUnfolderBase]: 17141/29572 cut-off events. [2024-11-13 13:36:41,385 INFO L125 PetriNetUnfolderBase]: For 2105/2105 co-relation queries the response was YES. [2024-11-13 13:36:41,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55660 conditions, 29572 events. 17141/29572 cut-off events. For 2105/2105 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 253920 event pairs, 8468 based on Foata normal form. 333/28150 useless extension candidates. Maximal degree in co-relation 55577. Up to 13507 conditions per place. [2024-11-13 13:36:41,579 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 104 selfloop transitions, 4 changer transitions 0/143 dead transitions. [2024-11-13 13:36:41,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 143 transitions, 635 flow [2024-11-13 13:36:41,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:36:41,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:36:41,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 262 transitions. [2024-11-13 13:36:41,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7359550561797753 [2024-11-13 13:36:41,580 INFO L175 Difference]: Start difference. First operand has 98 places, 86 transitions, 279 flow. Second operand 4 states and 262 transitions. [2024-11-13 13:36:41,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 143 transitions, 635 flow [2024-11-13 13:36:41,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 143 transitions, 621 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 13:36:41,642 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 298 flow [2024-11-13 13:36:41,643 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2024-11-13 13:36:41,643 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 17 predicate places. [2024-11-13 13:36:41,643 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 298 flow [2024-11-13 13:36:41,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:41,644 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:41,644 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:41,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-13 13:36:41,644 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:36:41,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:41,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2147087958, now seen corresponding path program 1 times [2024-11-13 13:36:41,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:41,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193491921] [2024-11-13 13:36:41,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:41,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:41,724 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-13 13:36:41,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:41,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193491921] [2024-11-13 13:36:41,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193491921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:41,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:41,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:36:41,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645849104] [2024-11-13 13:36:41,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:41,725 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:36:41,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:41,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:36:41,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:36:41,734 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 89 [2024-11-13 13:36:41,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:41,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:41,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 89 [2024-11-13 13:36:41,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:44,417 INFO L124 PetriNetUnfolderBase]: 17907/31481 cut-off events. [2024-11-13 13:36:44,417 INFO L125 PetriNetUnfolderBase]: For 4618/4861 co-relation queries the response was YES. [2024-11-13 13:36:44,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59735 conditions, 31481 events. 17907/31481 cut-off events. For 4618/4861 co-relation queries the response was YES. Maximal size of possible extension queue 1179. Compared 277524 event pairs, 3220 based on Foata normal form. 540/30372 useless extension candidates. Maximal degree in co-relation 59650. Up to 18630 conditions per place. [2024-11-13 13:36:44,601 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 77 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2024-11-13 13:36:44,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 113 transitions, 523 flow [2024-11-13 13:36:44,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:36:44,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:36:44,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2024-11-13 13:36:44,603 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6966292134831461 [2024-11-13 13:36:44,603 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 298 flow. Second operand 3 states and 186 transitions. [2024-11-13 13:36:44,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 113 transitions, 523 flow [2024-11-13 13:36:44,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 113 transitions, 517 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:36:44,609 INFO L231 Difference]: Finished difference. Result has 100 places, 88 transitions, 297 flow [2024-11-13 13:36:44,609 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=297, PETRI_PLACES=100, PETRI_TRANSITIONS=88} [2024-11-13 13:36:44,610 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, 17 predicate places. [2024-11-13 13:36:44,610 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 88 transitions, 297 flow [2024-11-13 13:36:44,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:44,610 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:44,610 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 4, 3, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:44,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-13 13:36:44,611 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2024-11-13 13:36:44,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:44,611 INFO L85 PathProgramCache]: Analyzing trace with hash -2135237433, now seen corresponding path program 1 times [2024-11-13 13:36:44,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:44,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753574852] [2024-11-13 13:36:44,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:44,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:44,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:36:44,639 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:36:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:36:44,664 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:36:44,665 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:36:44,665 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2024-11-13 13:36:44,666 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2024-11-13 13:36:44,666 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2024-11-13 13:36:44,666 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2024-11-13 13:36:44,666 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2024-11-13 13:36:44,666 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2024-11-13 13:36:44,666 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2024-11-13 13:36:44,666 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2024-11-13 13:36:44,667 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2024-11-13 13:36:44,667 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2024-11-13 13:36:44,667 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2024-11-13 13:36:44,667 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2024-11-13 13:36:44,667 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2024-11-13 13:36:44,668 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2024-11-13 13:36:44,668 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2024-11-13 13:36:44,668 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2024-11-13 13:36:44,668 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2024-11-13 13:36:44,668 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2024-11-13 13:36:44,668 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2024-11-13 13:36:44,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-13 13:36:44,669 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:36:44,669 WARN L247 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:36:44,670 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-13 13:36:44,722 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:36:44,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 115 transitions, 258 flow [2024-11-13 13:36:44,740 INFO L124 PetriNetUnfolderBase]: 17/126 cut-off events. [2024-11-13 13:36:44,740 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-13 13:36:44,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 126 events. 17/126 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 458 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 105. Up to 5 conditions per place. [2024-11-13 13:36:44,741 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 115 transitions, 258 flow [2024-11-13 13:36:44,747 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 115 transitions, 258 flow [2024-11-13 13:36:44,748 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:36:44,748 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;@364e598c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:36:44,749 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-13 13:36:44,750 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:36:44,750 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2024-11-13 13:36:44,750 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:36:44,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:36:44,750 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 13:36:44,750 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-13 13:36:44,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:36:44,751 INFO L85 PathProgramCache]: Analyzing trace with hash 587156, now seen corresponding path program 1 times [2024-11-13 13:36:44,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:36:44,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586929664] [2024-11-13 13:36:44,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:36:44,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:36:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:36:44,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:36:44,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:36:44,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586929664] [2024-11-13 13:36:44,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586929664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:36:44,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:36:44,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:36:44,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435500694] [2024-11-13 13:36:44,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:36:44,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:36:44,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:36:44,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:36:44,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:36:44,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 115 [2024-11-13 13:36:44,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 115 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:36:44,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:36:44,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 115 [2024-11-13 13:36:44,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:36:59,882 INFO L124 PetriNetUnfolderBase]: 120365/186035 cut-off events. [2024-11-13 13:36:59,882 INFO L125 PetriNetUnfolderBase]: For 11610/11610 co-relation queries the response was YES. [2024-11-13 13:37:00,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344443 conditions, 186035 events. 120365/186035 cut-off events. For 11610/11610 co-relation queries the response was YES. Maximal size of possible extension queue 6212. Compared 1712233 event pairs, 106668 based on Foata normal form. 34911/206029 useless extension candidates. Maximal degree in co-relation 27954. Up to 152969 conditions per place. [2024-11-13 13:37:00,713 INFO L140 encePairwiseOnDemand]: 100/115 looper letters, 51 selfloop transitions, 3 changer transitions 0/108 dead transitions. [2024-11-13 13:37:00,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 108 transitions, 352 flow [2024-11-13 13:37:00,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:37:00,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:37:00,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 282 transitions. [2024-11-13 13:37:00,715 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6130434782608696 [2024-11-13 13:37:00,715 INFO L175 Difference]: Start difference. First operand has 107 places, 115 transitions, 258 flow. Second operand 4 states and 282 transitions. [2024-11-13 13:37:00,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 108 transitions, 352 flow [2024-11-13 13:37:00,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 108 transitions, 346 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-13 13:37:00,722 INFO L231 Difference]: Finished difference. Result has 111 places, 108 transitions, 258 flow [2024-11-13 13:37:00,722 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=111, PETRI_TRANSITIONS=108} [2024-11-13 13:37:00,723 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, 4 predicate places. [2024-11-13 13:37:00,723 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 108 transitions, 258 flow [2024-11-13 13:37:00,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:37:00,723 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:37:00,724 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-13 13:37:00,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-13 13:37:00,724 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-11-13 13:37:00,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:37:00,724 INFO L85 PathProgramCache]: Analyzing trace with hash 312675641, now seen corresponding path program 1 times [2024-11-13 13:37:00,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:37:00,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907633178] [2024-11-13 13:37:00,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:37:00,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:37:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:00,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:37:00,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:37:00,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907633178] [2024-11-13 13:37:00,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907633178] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:37:00,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892624558] [2024-11-13 13:37:00,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:37:00,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:37:00,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:37:00,784 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:37:00,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd987ec2-611d-4c48-b0b7-a9d582340f3a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 13:37:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:37:00,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:37:00,920 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:37:00,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:37:00,954 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:37:00,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892624558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:37:00,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:37:00,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-13 13:37:00,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763314436] [2024-11-13 13:37:00,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:37:00,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:37:00,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:37:00,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:37:00,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:37:00,966 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 115 [2024-11-13 13:37:00,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 108 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 54.833333333333336) internal successors, (329), 6 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:37:00,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:37:00,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 115 [2024-11-13 13:37:00,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand