./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/09_fmaxsym.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6750191e-d8ed-485f-bed3-1c5a008824df/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6750191e-d8ed-485f-bed3-1c5a008824df/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6750191e-d8ed-485f-bed3-1c5a008824df/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6750191e-d8ed-485f-bed3-1c5a008824df/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/09_fmaxsym.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6750191e-d8ed-485f-bed3-1c5a008824df/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6750191e-d8ed-485f-bed3-1c5a008824df/bin/uautomizer-verify-BQ2R08f2Ya --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 2e54e3c041005c4525c3228cc12d27a93b528db4b6a57c9d2a4209bc47f8ee6e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:21:23,906 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:21:23,976 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6750191e-d8ed-485f-bed3-1c5a008824df/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-29 02:21:23,982 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:21:23,982 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:21:24,008 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:21:24,009 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:21:24,009 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:21:24,010 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:21:24,010 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:21:24,011 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:21:24,011 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:21:24,012 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:21:24,013 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:21:24,013 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:21:24,014 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:21:24,014 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:21:24,015 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 02:21:24,015 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:21:24,016 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 02:21:24,016 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:21:24,021 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:21:24,021 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:21:24,022 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:21:24,022 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 02:21:24,023 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 02:21:24,023 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 02:21:24,023 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:21:24,024 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:21:24,024 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:21:24,025 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:21:24,025 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:21:24,026 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:21:24,026 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:21:24,026 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:21:24,026 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:21:24,027 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:21:24,027 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:21:24,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:21:24,027 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:21:24,027 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:21:24,028 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:21:24,028 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:21:24,028 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:21:24,028 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6750191e-d8ed-485f-bed3-1c5a008824df/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6750191e-d8ed-485f-bed3-1c5a008824df/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e54e3c041005c4525c3228cc12d27a93b528db4b6a57c9d2a4209bc47f8ee6e [2023-11-29 02:21:24,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:21:24,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:21:24,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:21:24,284 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:21:24,285 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:21:24,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6750191e-d8ed-485f-bed3-1c5a008824df/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2023-11-29 02:21:27,000 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:21:27,246 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:21:27,246 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6750191e-d8ed-485f-bed3-1c5a008824df/sv-benchmarks/c/pthread-ext/09_fmaxsym.i [2023-11-29 02:21:27,258 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6750191e-d8ed-485f-bed3-1c5a008824df/bin/uautomizer-verify-BQ2R08f2Ya/data/b2e846859/4e6e24d3fb6e4127968ab5458d023382/FLAG4e4ef914d [2023-11-29 02:21:27,271 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6750191e-d8ed-485f-bed3-1c5a008824df/bin/uautomizer-verify-BQ2R08f2Ya/data/b2e846859/4e6e24d3fb6e4127968ab5458d023382 [2023-11-29 02:21:27,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:21:27,275 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:21:27,276 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:21:27,276 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:21:27,281 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:21:27,282 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:21:27" (1/1) ... [2023-11-29 02:21:27,283 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a38645d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:27, skipping insertion in model container [2023-11-29 02:21:27,283 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:21:27" (1/1) ... [2023-11-29 02:21:27,324 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:21:27,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:21:27,597 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:21:27,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:21:27,674 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:21:27,675 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:27 WrapperNode [2023-11-29 02:21:27,675 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:21:27,676 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:21:27,676 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:21:27,676 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:21:27,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:27" (1/1) ... [2023-11-29 02:21:27,696 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:27" (1/1) ... [2023-11-29 02:21:27,720 INFO L138 Inliner]: procedures = 171, calls = 27, calls flagged for inlining = 11, calls inlined = 13, statements flattened = 98 [2023-11-29 02:21:27,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:21:27,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:21:27,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:21:27,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:21:27,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:27" (1/1) ... [2023-11-29 02:21:27,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:27" (1/1) ... [2023-11-29 02:21:27,734 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:27" (1/1) ... [2023-11-29 02:21:27,748 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 7, 1]. 70 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6, 0]. The 1 writes are split as follows [0, 0, 1]. [2023-11-29 02:21:27,748 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:27" (1/1) ... [2023-11-29 02:21:27,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:27" (1/1) ... [2023-11-29 02:21:27,755 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:27" (1/1) ... [2023-11-29 02:21:27,759 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:27" (1/1) ... [2023-11-29 02:21:27,761 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:27" (1/1) ... [2023-11-29 02:21:27,762 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:27" (1/1) ... [2023-11-29 02:21:27,766 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:21:27,767 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:21:27,767 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:21:27,767 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:21:27,768 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:27" (1/1) ... [2023-11-29 02:21:27,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:21:27,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6750191e-d8ed-485f-bed3-1c5a008824df/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:21:27,795 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6750191e-d8ed-485f-bed3-1c5a008824df/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:21:27,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6750191e-d8ed-485f-bed3-1c5a008824df/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:21:27,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 02:21:27,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 02:21:27,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 02:21:27,824 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-29 02:21:27,824 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-29 02:21:27,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 02:21:27,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 02:21:27,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 02:21:27,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:21:27,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 02:21:27,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 02:21:27,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:21:27,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 02:21:27,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 02:21:27,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:21:27,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:21:27,828 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 02:21:27,942 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:21:27,944 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:21:28,111 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:21:28,246 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:21:28,246 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 02:21:28,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:21:28 BoogieIcfgContainer [2023-11-29 02:21:28,247 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:21:28,249 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:21:28,249 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:21:28,253 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:21:28,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:21:27" (1/3) ... [2023-11-29 02:21:28,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d956aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:21:28, skipping insertion in model container [2023-11-29 02:21:28,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:21:27" (2/3) ... [2023-11-29 02:21:28,254 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d956aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:21:28, skipping insertion in model container [2023-11-29 02:21:28,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:21:28" (3/3) ... [2023-11-29 02:21:28,256 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym.i [2023-11-29 02:21:28,263 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 02:21:28,283 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:21:28,283 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-29 02:21:28,283 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 02:21:28,331 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 02:21:28,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 26 transitions, 56 flow [2023-11-29 02:21:28,389 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2023-11-29 02:21:28,389 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 02:21:28,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 28 events. 2/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 35 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2023-11-29 02:21:28,392 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 26 transitions, 56 flow [2023-11-29 02:21:28,396 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 26 transitions, 56 flow [2023-11-29 02:21:28,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:21:28,411 INFO L357 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, mHoare=true, 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;@634124e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:21:28,411 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-29 02:21:28,415 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 02:21:28,415 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-29 02:21:28,415 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 02:21:28,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:21:28,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 02:21:28,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-29 02:21:28,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:21:28,420 INFO L85 PathProgramCache]: Analyzing trace with hash 314709457, now seen corresponding path program 1 times [2023-11-29 02:21:28,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:21:28,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791217975] [2023-11-29 02:21:28,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:28,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:21:28,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:28,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:21:28,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:21:28,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791217975] [2023-11-29 02:21:28,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791217975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:21:28,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:21:28,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:21:28,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50761957] [2023-11-29 02:21:28,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:21:28,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:21:28,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:21:28,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:21:28,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:21:28,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 26 [2023-11-29 02:21:28,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2023-11-29 02:21:28,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:21:28,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 26 [2023-11-29 02:21:28,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:21:28,809 INFO L124 PetriNetUnfolderBase]: 23/80 cut-off events. [2023-11-29 02:21:28,809 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 02:21:28,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 80 events. 23/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 179 event pairs, 2 based on Foata normal form. 3/80 useless extension candidates. Maximal degree in co-relation 131. Up to 48 conditions per place. [2023-11-29 02:21:28,812 INFO L140 encePairwiseOnDemand]: 21/26 looper letters, 15 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-11-29 02:21:28,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 88 flow [2023-11-29 02:21:28,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:21:28,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:21:28,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2023-11-29 02:21:28,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5769230769230769 [2023-11-29 02:21:28,823 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 45 transitions. [2023-11-29 02:21:28,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 45 transitions. [2023-11-29 02:21:28,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:21:28,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 45 transitions. [2023-11-29 02:21:28,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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) [2023-11-29 02:21:28,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2023-11-29 02:21:28,830 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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) [2023-11-29 02:21:28,832 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 56 flow. Second operand 3 states and 45 transitions. [2023-11-29 02:21:28,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 88 flow [2023-11-29 02:21:28,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 88 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 02:21:28,836 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 54 flow [2023-11-29 02:21:28,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2023-11-29 02:21:28,841 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-11-29 02:21:28,841 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 54 flow [2023-11-29 02:21:28,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2023-11-29 02:21:28,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:21:28,842 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-29 02:21:28,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:21:28,842 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-29 02:21:28,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:21:28,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1166041077, now seen corresponding path program 1 times [2023-11-29 02:21:28,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:21:28,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420096607] [2023-11-29 02:21:28,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:28,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:21:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:21:28,868 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:21:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:21:28,901 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:21:28,901 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 02:21:28,903 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-29 02:21:28,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2023-11-29 02:21:28,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2023-11-29 02:21:28,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2023-11-29 02:21:28,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2023-11-29 02:21:28,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2023-11-29 02:21:28,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 9 remaining) [2023-11-29 02:21:28,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2023-11-29 02:21:28,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2023-11-29 02:21:28,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:21:28,907 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-29 02:21:28,910 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 02:21:28,910 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-29 02:21:28,940 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 02:21:28,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 47 transitions, 104 flow [2023-11-29 02:21:28,954 INFO L124 PetriNetUnfolderBase]: 4/52 cut-off events. [2023-11-29 02:21:28,955 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 02:21:28,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 52 events. 4/52 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 100 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 43. Up to 3 conditions per place. [2023-11-29 02:21:28,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 47 transitions, 104 flow [2023-11-29 02:21:28,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 47 transitions, 104 flow [2023-11-29 02:21:28,959 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:21:28,961 INFO L357 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, mHoare=true, 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;@634124e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:21:28,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-29 02:21:28,965 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 02:21:28,965 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-29 02:21:28,965 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 02:21:28,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:21:28,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 02:21:28,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 02:21:28,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:21:28,966 INFO L85 PathProgramCache]: Analyzing trace with hash 359581652, now seen corresponding path program 1 times [2023-11-29 02:21:28,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:21:28,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289838694] [2023-11-29 02:21:28,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:28,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:21:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:29,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:21:29,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:21:29,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289838694] [2023-11-29 02:21:29,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289838694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:21:29,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:21:29,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:21:29,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996600866] [2023-11-29 02:21:29,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:21:29,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:21:29,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:21:29,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:21:29,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:21:29,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2023-11-29 02:21:29,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-29 02:21:29,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:21:29,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2023-11-29 02:21:29,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:21:29,319 INFO L124 PetriNetUnfolderBase]: 584/1236 cut-off events. [2023-11-29 02:21:29,319 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-11-29 02:21:29,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 1236 events. 584/1236 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 7113 event pairs, 68 based on Foata normal form. 66/1248 useless extension candidates. Maximal degree in co-relation 1897. Up to 807 conditions per place. [2023-11-29 02:21:29,333 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 37 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-11-29 02:21:29,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 56 transitions, 205 flow [2023-11-29 02:21:29,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:21:29,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:21:29,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2023-11-29 02:21:29,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6808510638297872 [2023-11-29 02:21:29,335 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 96 transitions. [2023-11-29 02:21:29,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 96 transitions. [2023-11-29 02:21:29,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:21:29,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 96 transitions. [2023-11-29 02:21:29,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2023-11-29 02:21:29,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2023-11-29 02:21:29,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2023-11-29 02:21:29,338 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 104 flow. Second operand 3 states and 96 transitions. [2023-11-29 02:21:29,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 56 transitions, 205 flow [2023-11-29 02:21:29,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 56 transitions, 205 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 02:21:29,341 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 100 flow [2023-11-29 02:21:29,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2023-11-29 02:21:29,342 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2023-11-29 02:21:29,342 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 100 flow [2023-11-29 02:21:29,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-29 02:21:29,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:21:29,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 02:21:29,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 02:21:29,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 02:21:29,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:21:29,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1737870266, now seen corresponding path program 1 times [2023-11-29 02:21:29,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:21:29,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043175253] [2023-11-29 02:21:29,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:29,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:21:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:29,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:21:29,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:21:29,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043175253] [2023-11-29 02:21:29,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043175253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:21:29,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:21:29,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:21:29,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842334140] [2023-11-29 02:21:29,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:21:29,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:21:29,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:21:29,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:21:29,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:21:29,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2023-11-29 02:21:29,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-29 02:21:29,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:21:29,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2023-11-29 02:21:29,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:21:29,622 INFO L124 PetriNetUnfolderBase]: 531/1126 cut-off events. [2023-11-29 02:21:29,623 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2023-11-29 02:21:29,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2092 conditions, 1126 events. 531/1126 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6198 event pairs, 212 based on Foata normal form. 33/1090 useless extension candidates. Maximal degree in co-relation 1859. Up to 721 conditions per place. [2023-11-29 02:21:29,630 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 36 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-11-29 02:21:29,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 205 flow [2023-11-29 02:21:29,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:21:29,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:21:29,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2023-11-29 02:21:29,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2023-11-29 02:21:29,632 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 90 transitions. [2023-11-29 02:21:29,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 90 transitions. [2023-11-29 02:21:29,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:21:29,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 90 transitions. [2023-11-29 02:21:29,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2023-11-29 02:21:29,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2023-11-29 02:21:29,636 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2023-11-29 02:21:29,636 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 100 flow. Second operand 3 states and 90 transitions. [2023-11-29 02:21:29,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 205 flow [2023-11-29 02:21:29,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 201 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:21:29,638 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 98 flow [2023-11-29 02:21:29,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-11-29 02:21:29,639 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2023-11-29 02:21:29,640 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 98 flow [2023-11-29 02:21:29,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-29 02:21:29,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:21:29,640 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-29 02:21:29,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:21:29,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 02:21:29,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:21:29,641 INFO L85 PathProgramCache]: Analyzing trace with hash 612754329, now seen corresponding path program 1 times [2023-11-29 02:21:29,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:21:29,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666823160] [2023-11-29 02:21:29,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:29,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:21:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:29,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:21:29,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:21:29,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666823160] [2023-11-29 02:21:29,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666823160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:21:29,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:21:29,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:21:29,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18948621] [2023-11-29 02:21:29,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:21:29,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:21:29,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:21:29,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:21:29,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:21:29,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2023-11-29 02:21:29,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-11-29 02:21:29,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:21:29,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2023-11-29 02:21:29,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:21:29,875 INFO L124 PetriNetUnfolderBase]: 581/1202 cut-off events. [2023-11-29 02:21:29,875 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2023-11-29 02:21:29,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2254 conditions, 1202 events. 581/1202 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6673 event pairs, 92 based on Foata normal form. 30/1187 useless extension candidates. Maximal degree in co-relation 1665. Up to 750 conditions per place. [2023-11-29 02:21:29,884 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 36 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-11-29 02:21:29,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 53 transitions, 200 flow [2023-11-29 02:21:29,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:21:29,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:21:29,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2023-11-29 02:21:29,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2023-11-29 02:21:29,886 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 90 transitions. [2023-11-29 02:21:29,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 90 transitions. [2023-11-29 02:21:29,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:21:29,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 90 transitions. [2023-11-29 02:21:29,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2023-11-29 02:21:29,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2023-11-29 02:21:29,889 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2023-11-29 02:21:29,889 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 98 flow. Second operand 3 states and 90 transitions. [2023-11-29 02:21:29,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 53 transitions, 200 flow [2023-11-29 02:21:29,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 53 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:21:29,892 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 96 flow [2023-11-29 02:21:29,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-11-29 02:21:29,893 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2023-11-29 02:21:29,893 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 96 flow [2023-11-29 02:21:29,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-11-29 02:21:29,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:21:29,894 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2023-11-29 02:21:29,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 02:21:29,894 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-29 02:21:29,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:21:29,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1815497584, now seen corresponding path program 1 times [2023-11-29 02:21:29,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:21:29,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819950685] [2023-11-29 02:21:29,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:29,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:21:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:21:29,909 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:21:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:21:29,922 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:21:29,922 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 02:21:29,922 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-29 02:21:29,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-29 02:21:29,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-29 02:21:29,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-29 02:21:29,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-29 02:21:29,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-29 02:21:29,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-29 02:21:29,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-29 02:21:29,924 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-29 02:21:29,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-29 02:21:29,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-29 02:21:29,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-29 02:21:29,925 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-29 02:21:29,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 02:21:29,925 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-29 02:21:29,926 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 02:21:29,926 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-29 02:21:29,962 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 02:21:29,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 68 transitions, 154 flow [2023-11-29 02:21:29,973 INFO L124 PetriNetUnfolderBase]: 6/76 cut-off events. [2023-11-29 02:21:29,973 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-29 02:21:29,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 6/76 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 195 event pairs, 0 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 63. Up to 4 conditions per place. [2023-11-29 02:21:29,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 68 transitions, 154 flow [2023-11-29 02:21:29,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 69 places, 68 transitions, 154 flow [2023-11-29 02:21:29,976 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:21:29,977 INFO L357 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, mHoare=true, 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;@634124e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:21:29,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-29 02:21:29,979 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 02:21:29,979 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-29 02:21:29,980 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 02:21:29,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:21:29,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 02:21:29,980 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 02:21:29,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:21:29,981 INFO L85 PathProgramCache]: Analyzing trace with hash 424493612, now seen corresponding path program 1 times [2023-11-29 02:21:29,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:21:29,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50643509] [2023-11-29 02:21:29,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:29,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:21:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:30,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:21:30,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:21:30,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50643509] [2023-11-29 02:21:30,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50643509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:21:30,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:21:30,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:21:30,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118995501] [2023-11-29 02:21:30,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:21:30,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:21:30,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:21:30,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:21:30,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:21:30,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2023-11-29 02:21:30,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 68 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:21:30,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:21:30,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2023-11-29 02:21:30,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:21:31,844 INFO L124 PetriNetUnfolderBase]: 9494/16080 cut-off events. [2023-11-29 02:21:31,845 INFO L125 PetriNetUnfolderBase]: For 707/707 co-relation queries the response was YES. [2023-11-29 02:21:31,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29719 conditions, 16080 events. 9494/16080 cut-off events. For 707/707 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 124067 event pairs, 1268 based on Foata normal form. 1026/16530 useless extension candidates. Maximal degree in co-relation 17473. Up to 11097 conditions per place. [2023-11-29 02:21:32,020 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 59 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-11-29 02:21:32,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 87 transitions, 326 flow [2023-11-29 02:21:32,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:21:32,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:21:32,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2023-11-29 02:21:32,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7205882352941176 [2023-11-29 02:21:32,023 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2023-11-29 02:21:32,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2023-11-29 02:21:32,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:21:32,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2023-11-29 02:21:32,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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) [2023-11-29 02:21:32,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2023-11-29 02:21:32,025 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2023-11-29 02:21:32,026 INFO L175 Difference]: Start difference. First operand has 69 places, 68 transitions, 154 flow. Second operand 3 states and 147 transitions. [2023-11-29 02:21:32,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 87 transitions, 326 flow [2023-11-29 02:21:32,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 87 transitions, 322 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-29 02:21:32,030 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 146 flow [2023-11-29 02:21:32,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2023-11-29 02:21:32,031 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, 0 predicate places. [2023-11-29 02:21:32,031 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 146 flow [2023-11-29 02:21:32,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:21:32,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:21:32,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 02:21:32,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 02:21:32,032 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 02:21:32,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:21:32,032 INFO L85 PathProgramCache]: Analyzing trace with hash 274400562, now seen corresponding path program 1 times [2023-11-29 02:21:32,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:21:32,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849530802] [2023-11-29 02:21:32,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:32,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:21:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:32,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:21:32,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:21:32,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849530802] [2023-11-29 02:21:32,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849530802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:21:32,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:21:32,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:21:32,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447971615] [2023-11-29 02:21:32,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:21:32,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:21:32,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:21:32,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:21:32,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:21:32,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2023-11-29 02:21:32,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:21:32,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:21:32,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2023-11-29 02:21:32,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:21:33,755 INFO L124 PetriNetUnfolderBase]: 8631/14644 cut-off events. [2023-11-29 02:21:33,755 INFO L125 PetriNetUnfolderBase]: For 1011/1011 co-relation queries the response was YES. [2023-11-29 02:21:33,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27611 conditions, 14644 events. 8631/14644 cut-off events. For 1011/1011 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 108216 event pairs, 4592 based on Foata normal form. 333/14185 useless extension candidates. Maximal degree in co-relation 27243. Up to 9901 conditions per place. [2023-11-29 02:21:33,858 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 58 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-11-29 02:21:33,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 86 transitions, 322 flow [2023-11-29 02:21:33,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:21:33,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:21:33,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2023-11-29 02:21:33,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6813725490196079 [2023-11-29 02:21:33,860 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 139 transitions. [2023-11-29 02:21:33,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 139 transitions. [2023-11-29 02:21:33,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:21:33,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 139 transitions. [2023-11-29 02:21:33,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2023-11-29 02:21:33,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2023-11-29 02:21:33,863 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2023-11-29 02:21:33,863 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 146 flow. Second operand 3 states and 139 transitions. [2023-11-29 02:21:33,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 86 transitions, 322 flow [2023-11-29 02:21:33,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 86 transitions, 318 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:21:33,867 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 144 flow [2023-11-29 02:21:33,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2023-11-29 02:21:33,868 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2023-11-29 02:21:33,868 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 144 flow [2023-11-29 02:21:33,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:21:33,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:21:33,869 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-29 02:21:33,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 02:21:33,869 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 02:21:33,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:21:33,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1669759513, now seen corresponding path program 1 times [2023-11-29 02:21:33,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:21:33,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975235153] [2023-11-29 02:21:33,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:33,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:21:33,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:33,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:21:33,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:21:33,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975235153] [2023-11-29 02:21:33,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975235153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:21:33,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:21:33,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:21:33,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402696642] [2023-11-29 02:21:33,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:21:33,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:21:33,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:21:33,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:21:33,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:21:33,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2023-11-29 02:21:33,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:21:33,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:21:33,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2023-11-29 02:21:33,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:21:35,492 INFO L124 PetriNetUnfolderBase]: 9491/16034 cut-off events. [2023-11-29 02:21:35,492 INFO L125 PetriNetUnfolderBase]: For 1111/1111 co-relation queries the response was YES. [2023-11-29 02:21:35,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30287 conditions, 16034 events. 9491/16034 cut-off events. For 1111/1111 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 121690 event pairs, 1292 based on Foata normal form. 330/15791 useless extension candidates. Maximal degree in co-relation 23557. Up to 11040 conditions per place. [2023-11-29 02:21:35,557 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 58 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-11-29 02:21:35,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 84 transitions, 317 flow [2023-11-29 02:21:35,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:21:35,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:21:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2023-11-29 02:21:35,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6813725490196079 [2023-11-29 02:21:35,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 139 transitions. [2023-11-29 02:21:35,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 139 transitions. [2023-11-29 02:21:35,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:21:35,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 139 transitions. [2023-11-29 02:21:35,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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) [2023-11-29 02:21:35,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2023-11-29 02:21:35,561 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2023-11-29 02:21:35,561 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 144 flow. Second operand 3 states and 139 transitions. [2023-11-29 02:21:35,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 84 transitions, 317 flow [2023-11-29 02:21:35,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 84 transitions, 309 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:21:35,564 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 142 flow [2023-11-29 02:21:35,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-11-29 02:21:35,565 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -2 predicate places. [2023-11-29 02:21:35,565 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 142 flow [2023-11-29 02:21:35,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:21:35,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:21:35,566 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:21:35,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 02:21:35,566 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 02:21:35,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:21:35,566 INFO L85 PathProgramCache]: Analyzing trace with hash 222937849, now seen corresponding path program 1 times [2023-11-29 02:21:35,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:21:35,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992680848] [2023-11-29 02:21:35,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:35,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:21:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:35,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:21:35,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:21:35,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992680848] [2023-11-29 02:21:35,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992680848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:21:35,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:21:35,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:21:35,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000760878] [2023-11-29 02:21:35,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:21:35,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:21:35,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:21:35,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:21:35,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:21:35,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2023-11-29 02:21:35,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:21:35,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:21:35,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2023-11-29 02:21:35,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:21:36,546 INFO L124 PetriNetUnfolderBase]: 8631/14598 cut-off events. [2023-11-29 02:21:36,546 INFO L125 PetriNetUnfolderBase]: For 1000/1000 co-relation queries the response was YES. [2023-11-29 02:21:36,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27559 conditions, 14598 events. 8631/14598 cut-off events. For 1000/1000 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 107167 event pairs, 2732 based on Foata normal form. 330/14197 useless extension candidates. Maximal degree in co-relation 19159. Up to 9850 conditions per place. [2023-11-29 02:21:36,608 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 57 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-11-29 02:21:36,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 83 transitions, 309 flow [2023-11-29 02:21:36,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:21:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:21:36,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2023-11-29 02:21:36,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2023-11-29 02:21:36,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 138 transitions. [2023-11-29 02:21:36,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 138 transitions. [2023-11-29 02:21:36,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:21:36,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 138 transitions. [2023-11-29 02:21:36,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:21:36,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2023-11-29 02:21:36,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2023-11-29 02:21:36,612 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 142 flow. Second operand 3 states and 138 transitions. [2023-11-29 02:21:36,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 83 transitions, 309 flow [2023-11-29 02:21:36,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 83 transitions, 305 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:21:36,617 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 140 flow [2023-11-29 02:21:36,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=136, 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=140, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2023-11-29 02:21:36,618 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -3 predicate places. [2023-11-29 02:21:36,618 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 140 flow [2023-11-29 02:21:36,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:21:36,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:21:36,619 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 02:21:36,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 02:21:36,619 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 02:21:36,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:21:36,620 INFO L85 PathProgramCache]: Analyzing trace with hash -560353203, now seen corresponding path program 1 times [2023-11-29 02:21:36,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:21:36,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668003914] [2023-11-29 02:21:36,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:36,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:21:36,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:36,662 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 02:21:36,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:21:36,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668003914] [2023-11-29 02:21:36,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668003914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:21:36,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:21:36,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:21:36,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743681988] [2023-11-29 02:21:36,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:21:36,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:21:36,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:21:36,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:21:36,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:21:36,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2023-11-29 02:21:36,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:21:36,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:21:36,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2023-11-29 02:21:36,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:21:37,703 INFO L124 PetriNetUnfolderBase]: 9431/15846 cut-off events. [2023-11-29 02:21:37,703 INFO L125 PetriNetUnfolderBase]: For 1090/1090 co-relation queries the response was YES. [2023-11-29 02:21:37,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29967 conditions, 15846 events. 9431/15846 cut-off events. For 1090/1090 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 118235 event pairs, 1748 based on Foata normal form. 300/15629 useless extension candidates. Maximal degree in co-relation 20897. Up to 10200 conditions per place. [2023-11-29 02:21:37,771 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 57 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-11-29 02:21:37,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 304 flow [2023-11-29 02:21:37,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:21:37,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:21:37,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2023-11-29 02:21:37,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2023-11-29 02:21:37,773 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 138 transitions. [2023-11-29 02:21:37,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 138 transitions. [2023-11-29 02:21:37,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:21:37,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 138 transitions. [2023-11-29 02:21:37,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:21:37,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2023-11-29 02:21:37,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2023-11-29 02:21:37,775 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 140 flow. Second operand 3 states and 138 transitions. [2023-11-29 02:21:37,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 304 flow [2023-11-29 02:21:37,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 81 transitions, 296 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:21:37,779 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 138 flow [2023-11-29 02:21:37,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=134, 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=138, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2023-11-29 02:21:37,780 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -4 predicate places. [2023-11-29 02:21:37,780 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 138 flow [2023-11-29 02:21:37,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:21:37,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:21:37,781 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2023-11-29 02:21:37,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 02:21:37,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-29 02:21:37,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:21:37,781 INFO L85 PathProgramCache]: Analyzing trace with hash -191097452, now seen corresponding path program 1 times [2023-11-29 02:21:37,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:21:37,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267780957] [2023-11-29 02:21:37,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:37,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:21:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:21:37,796 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:21:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:21:37,809 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:21:37,809 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 02:21:37,809 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-29 02:21:37,809 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-29 02:21:37,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-29 02:21:37,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-29 02:21:37,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-29 02:21:37,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-29 02:21:37,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-29 02:21:37,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-29 02:21:37,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-29 02:21:37,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-29 02:21:37,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-29 02:21:37,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-29 02:21:37,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-29 02:21:37,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-29 02:21:37,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-29 02:21:37,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-29 02:21:37,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-29 02:21:37,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 02:21:37,812 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-29 02:21:37,813 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 02:21:37,813 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-29 02:21:37,856 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 02:21:37,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 89 transitions, 206 flow [2023-11-29 02:21:37,869 INFO L124 PetriNetUnfolderBase]: 8/100 cut-off events. [2023-11-29 02:21:37,869 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-29 02:21:37,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 100 events. 8/100 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 304 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 88. Up to 5 conditions per place. [2023-11-29 02:21:37,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 89 transitions, 206 flow [2023-11-29 02:21:37,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 89 transitions, 206 flow [2023-11-29 02:21:37,872 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:21:37,873 INFO L357 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, mHoare=true, 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;@634124e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:21:37,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-29 02:21:37,875 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 02:21:37,875 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-29 02:21:37,875 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 02:21:37,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:21:37,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 02:21:37,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 02:21:37,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:21:37,876 INFO L85 PathProgramCache]: Analyzing trace with hash 509446617, now seen corresponding path program 1 times [2023-11-29 02:21:37,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:21:37,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073234685] [2023-11-29 02:21:37,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:37,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:21:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:21:37,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:21:37,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073234685] [2023-11-29 02:21:37,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073234685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:21:37,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:21:37,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:21:37,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587957906] [2023-11-29 02:21:37,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:21:37,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:21:37,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:21:37,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:21:37,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:21:37,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 89 [2023-11-29 02:21:37,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 89 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2023-11-29 02:21:37,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:21:37,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 89 [2023-11-29 02:21:37,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:21:52,703 INFO L124 PetriNetUnfolderBase]: 131594/197684 cut-off events. [2023-11-29 02:21:52,703 INFO L125 PetriNetUnfolderBase]: For 11893/11893 co-relation queries the response was YES. [2023-11-29 02:21:53,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371924 conditions, 197684 events. 131594/197684 cut-off events. For 11893/11893 co-relation queries the response was YES. Maximal size of possible extension queue 6439. Compared 1751428 event pairs, 18668 based on Foata normal form. 13926/205743 useless extension candidates. Maximal degree in co-relation 130170. Up to 140997 conditions per place. [2023-11-29 02:21:53,797 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 81 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2023-11-29 02:21:53,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 118 transitions, 451 flow [2023-11-29 02:21:53,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:21:53,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:21:53,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2023-11-29 02:21:53,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7415730337078652 [2023-11-29 02:21:53,799 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 198 transitions. [2023-11-29 02:21:53,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 198 transitions. [2023-11-29 02:21:53,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:21:53,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 198 transitions. [2023-11-29 02:21:53,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 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) [2023-11-29 02:21:53,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2023-11-29 02:21:53,802 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2023-11-29 02:21:53,802 INFO L175 Difference]: Start difference. First operand has 90 places, 89 transitions, 206 flow. Second operand 3 states and 198 transitions. [2023-11-29 02:21:53,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 118 transitions, 451 flow [2023-11-29 02:21:53,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 118 transitions, 439 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-29 02:21:53,809 INFO L231 Difference]: Finished difference. Result has 90 places, 83 transitions, 192 flow [2023-11-29 02:21:53,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=88, 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=192, PETRI_PLACES=90, PETRI_TRANSITIONS=83} [2023-11-29 02:21:53,810 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, 0 predicate places. [2023-11-29 02:21:53,810 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 83 transitions, 192 flow [2023-11-29 02:21:53,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2023-11-29 02:21:53,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:21:53,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 02:21:53,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 02:21:53,811 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 02:21:53,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:21:53,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1387023470, now seen corresponding path program 1 times [2023-11-29 02:21:53,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:21:53,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19983815] [2023-11-29 02:21:53,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:21:53,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:21:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:21:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:21:53,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:21:53,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19983815] [2023-11-29 02:21:53,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19983815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:21:53,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:21:53,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:21:53,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656415659] [2023-11-29 02:21:53,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:21:53,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:21:53,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:21:53,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:21:53,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:21:53,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 89 [2023-11-29 02:21:53,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 83 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2023-11-29 02:21:53,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:21:53,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 89 [2023-11-29 02:21:53,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:22:07,293 INFO L124 PetriNetUnfolderBase]: 119631/180660 cut-off events. [2023-11-29 02:22:07,293 INFO L125 PetriNetUnfolderBase]: For 10213/10213 co-relation queries the response was YES. [2023-11-29 02:22:07,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343628 conditions, 180660 events. 119631/180660 cut-off events. For 10213/10213 co-relation queries the response was YES. Maximal size of possible extension queue 6280. Compared 1554730 event pairs, 72008 based on Foata normal form. 3333/175705 useless extension candidates. Maximal degree in co-relation 342899. Up to 125701 conditions per place. [2023-11-29 02:22:08,464 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 80 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2023-11-29 02:22:08,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 117 transitions, 439 flow [2023-11-29 02:22:08,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:22:08,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:22:08,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2023-11-29 02:22:08,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.704119850187266 [2023-11-29 02:22:08,466 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 188 transitions. [2023-11-29 02:22:08,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 188 transitions. [2023-11-29 02:22:08,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:22:08,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 188 transitions. [2023-11-29 02:22:08,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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) [2023-11-29 02:22:08,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2023-11-29 02:22:08,468 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2023-11-29 02:22:08,468 INFO L175 Difference]: Start difference. First operand has 90 places, 83 transitions, 192 flow. Second operand 3 states and 188 transitions. [2023-11-29 02:22:08,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 117 transitions, 439 flow [2023-11-29 02:22:08,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 117 transitions, 435 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:22:08,477 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 190 flow [2023-11-29 02:22:08,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2023-11-29 02:22:08,478 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, -1 predicate places. [2023-11-29 02:22:08,478 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 190 flow [2023-11-29 02:22:08,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2023-11-29 02:22:08,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:22:08,478 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-29 02:22:08,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 02:22:08,478 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 02:22:08,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:22:08,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1544931175, now seen corresponding path program 1 times [2023-11-29 02:22:08,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:22:08,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599059300] [2023-11-29 02:22:08,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:22:08,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:22:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:22:08,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:22:08,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:22:08,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599059300] [2023-11-29 02:22:08,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599059300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:22:08,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:22:08,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:22:08,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419060918] [2023-11-29 02:22:08,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:22:08,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:22:08,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:22:08,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:22:08,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:22:08,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 89 [2023-11-29 02:22:08,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:22:08,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:22:08,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 89 [2023-11-29 02:22:08,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:22:22,660 INFO L124 PetriNetUnfolderBase]: 131591/197732 cut-off events. [2023-11-29 02:22:22,661 INFO L125 PetriNetUnfolderBase]: For 11345/11345 co-relation queries the response was YES. [2023-11-29 02:22:22,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376986 conditions, 197732 events. 131591/197732 cut-off events. For 11345/11345 co-relation queries the response was YES. Maximal size of possible extension queue 6411. Compared 1742539 event pairs, 18692 based on Foata normal form. 3330/195126 useless extension candidates. Maximal degree in co-relation 295687. Up to 140940 conditions per place. [2023-11-29 02:22:23,849 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 80 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2023-11-29 02:22:23,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 115 transitions, 434 flow [2023-11-29 02:22:23,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:22:23,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:22:23,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 188 transitions. [2023-11-29 02:22:23,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.704119850187266 [2023-11-29 02:22:23,851 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 188 transitions. [2023-11-29 02:22:23,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 188 transitions. [2023-11-29 02:22:23,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:22:23,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 188 transitions. [2023-11-29 02:22:23,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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) [2023-11-29 02:22:23,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2023-11-29 02:22:23,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2023-11-29 02:22:23,854 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 190 flow. Second operand 3 states and 188 transitions. [2023-11-29 02:22:23,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 115 transitions, 434 flow [2023-11-29 02:22:23,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 115 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:22:23,863 INFO L231 Difference]: Finished difference. Result has 88 places, 81 transitions, 188 flow [2023-11-29 02:22:23,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=88, PETRI_TRANSITIONS=81} [2023-11-29 02:22:23,864 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, -2 predicate places. [2023-11-29 02:22:23,864 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 81 transitions, 188 flow [2023-11-29 02:22:23,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:22:23,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:22:23,865 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:22:23,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 02:22:23,865 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 02:22:23,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:22:23,866 INFO L85 PathProgramCache]: Analyzing trace with hash -648225562, now seen corresponding path program 1 times [2023-11-29 02:22:23,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:22:23,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892478227] [2023-11-29 02:22:23,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:22:23,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:22:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:22:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 02:22:23,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:22:23,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892478227] [2023-11-29 02:22:23,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892478227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:22:23,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:22:23,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:22:23,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744727892] [2023-11-29 02:22:23,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:22:23,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:22:23,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:22:23,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:22:23,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:22:23,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 89 [2023-11-29 02:22:23,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 81 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:22:23,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:22:23,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 89 [2023-11-29 02:22:23,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:22:36,742 INFO L124 PetriNetUnfolderBase]: 119631/180042 cut-off events. [2023-11-29 02:22:36,742 INFO L125 PetriNetUnfolderBase]: For 10340/10340 co-relation queries the response was YES. [2023-11-29 02:22:37,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343004 conditions, 180042 events. 119631/180042 cut-off events. For 10340/10340 co-relation queries the response was YES. Maximal size of possible extension queue 6209. Compared 1535518 event pairs, 51932 based on Foata normal form. 3330/175285 useless extension candidates. Maximal degree in co-relation 240007. Up to 125650 conditions per place. [2023-11-29 02:22:37,582 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 79 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2023-11-29 02:22:37,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 114 transitions, 426 flow [2023-11-29 02:22:37,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:22:37,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:22:37,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2023-11-29 02:22:37,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.700374531835206 [2023-11-29 02:22:37,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 187 transitions. [2023-11-29 02:22:37,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 187 transitions. [2023-11-29 02:22:37,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:22:37,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 187 transitions. [2023-11-29 02:22:37,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:22:37,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2023-11-29 02:22:37,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2023-11-29 02:22:37,585 INFO L175 Difference]: Start difference. First operand has 88 places, 81 transitions, 188 flow. Second operand 3 states and 187 transitions. [2023-11-29 02:22:37,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 114 transitions, 426 flow [2023-11-29 02:22:37,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 114 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:22:37,598 INFO L231 Difference]: Finished difference. Result has 87 places, 80 transitions, 186 flow [2023-11-29 02:22:37,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=87, PETRI_TRANSITIONS=80} [2023-11-29 02:22:37,599 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, -3 predicate places. [2023-11-29 02:22:37,599 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 80 transitions, 186 flow [2023-11-29 02:22:37,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:22:37,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:22:37,599 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2023-11-29 02:22:37,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 02:22:37,600 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 02:22:37,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:22:37,600 INFO L85 PathProgramCache]: Analyzing trace with hash -248831846, now seen corresponding path program 1 times [2023-11-29 02:22:37,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:22:37,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369937031] [2023-11-29 02:22:37,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:22:37,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:22:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:22:37,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 02:22:37,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:22:37,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369937031] [2023-11-29 02:22:37,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369937031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:22:37,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:22:37,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:22:37,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673308523] [2023-11-29 02:22:37,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:22:37,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:22:37,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:22:37,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:22:37,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:22:37,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 89 [2023-11-29 02:22:37,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 80 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:22:37,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:22:37,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 89 [2023-11-29 02:22:37,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:22:50,650 INFO L124 PetriNetUnfolderBase]: 131531/196464 cut-off events. [2023-11-29 02:22:50,650 INFO L125 PetriNetUnfolderBase]: For 11376/11376 co-relation queries the response was YES. [2023-11-29 02:22:50,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375586 conditions, 196464 events. 131531/196464 cut-off events. For 11376/11376 co-relation queries the response was YES. Maximal size of possible extension queue 6660. Compared 1676180 event pairs, 35948 based on Foata normal form. 3300/191625 useless extension candidates. Maximal degree in co-relation 262931. Up to 140100 conditions per place. [2023-11-29 02:22:51,566 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 79 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-11-29 02:22:51,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 112 transitions, 421 flow [2023-11-29 02:22:51,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:22:51,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:22:51,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2023-11-29 02:22:51,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.700374531835206 [2023-11-29 02:22:51,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 187 transitions. [2023-11-29 02:22:51,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 187 transitions. [2023-11-29 02:22:51,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:22:51,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 187 transitions. [2023-11-29 02:22:51,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:22:51,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2023-11-29 02:22:51,570 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2023-11-29 02:22:51,571 INFO L175 Difference]: Start difference. First operand has 87 places, 80 transitions, 186 flow. Second operand 3 states and 187 transitions. [2023-11-29 02:22:51,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 112 transitions, 421 flow [2023-11-29 02:22:51,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 112 transitions, 413 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:22:51,583 INFO L231 Difference]: Finished difference. Result has 86 places, 79 transitions, 184 flow [2023-11-29 02:22:51,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=86, PETRI_TRANSITIONS=79} [2023-11-29 02:22:51,583 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, -4 predicate places. [2023-11-29 02:22:51,584 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 79 transitions, 184 flow [2023-11-29 02:22:51,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:22:51,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:22:51,584 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:22:51,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 02:22:51,584 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 02:22:51,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:22:51,584 INFO L85 PathProgramCache]: Analyzing trace with hash 876147913, now seen corresponding path program 1 times [2023-11-29 02:22:51,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:22:51,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783173742] [2023-11-29 02:22:51,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:22:51,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:22:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:22:51,632 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 02:22:51,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:22:51,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783173742] [2023-11-29 02:22:51,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783173742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:22:51,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:22:51,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:22:51,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186774320] [2023-11-29 02:22:51,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:22:51,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:22:51,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:22:51,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:22:51,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:22:51,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 89 [2023-11-29 02:22:51,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:22:51,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:22:51,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 89 [2023-11-29 02:22:51,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:23:04,118 INFO L124 PetriNetUnfolderBase]: 119631/182464 cut-off events. [2023-11-29 02:23:04,118 INFO L125 PetriNetUnfolderBase]: For 10340/10340 co-relation queries the response was YES. [2023-11-29 02:23:04,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345366 conditions, 182464 events. 119631/182464 cut-off events. For 10340/10340 co-relation queries the response was YES. Maximal size of possible extension queue 5945. Compared 1615533 event pairs, 19148 based on Foata normal form. 3300/179830 useless extension candidates. Maximal degree in co-relation 241777. Up to 124900 conditions per place. [2023-11-29 02:23:05,026 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 78 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-11-29 02:23:05,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 111 transitions, 413 flow [2023-11-29 02:23:05,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:23:05,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:23:05,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2023-11-29 02:23:05,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6966292134831461 [2023-11-29 02:23:05,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 186 transitions. [2023-11-29 02:23:05,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 186 transitions. [2023-11-29 02:23:05,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:23:05,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 186 transitions. [2023-11-29 02:23:05,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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) [2023-11-29 02:23:05,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2023-11-29 02:23:05,031 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2023-11-29 02:23:05,031 INFO L175 Difference]: Start difference. First operand has 86 places, 79 transitions, 184 flow. Second operand 3 states and 186 transitions. [2023-11-29 02:23:05,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 111 transitions, 413 flow [2023-11-29 02:23:05,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 111 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:23:05,063 INFO L231 Difference]: Finished difference. Result has 85 places, 78 transitions, 182 flow [2023-11-29 02:23:05,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=85, PETRI_TRANSITIONS=78} [2023-11-29 02:23:05,064 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, -5 predicate places. [2023-11-29 02:23:05,064 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 78 transitions, 182 flow [2023-11-29 02:23:05,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:23:05,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:23:05,064 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:23:05,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 02:23:05,064 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 02:23:05,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:23:05,065 INFO L85 PathProgramCache]: Analyzing trace with hash 147487674, now seen corresponding path program 1 times [2023-11-29 02:23:05,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:23:05,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618459976] [2023-11-29 02:23:05,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:23:05,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:23:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:05,101 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-29 02:23:05,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:23:05,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618459976] [2023-11-29 02:23:05,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618459976] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:23:05,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:23:05,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:23:05,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527448988] [2023-11-29 02:23:05,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:23:05,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:23:05,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:23:05,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:23:05,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:23:05,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 89 [2023-11-29 02:23:05,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 78 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:23:05,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:23:05,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 89 [2023-11-29 02:23:05,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 02:23:17,584 INFO L124 PetriNetUnfolderBase]: 130631/195728 cut-off events. [2023-11-29 02:23:17,584 INFO L125 PetriNetUnfolderBase]: For 11420/11420 co-relation queries the response was YES. [2023-11-29 02:23:17,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 373230 conditions, 195728 events. 130631/195728 cut-off events. For 11420/11420 co-relation queries the response was YES. Maximal size of possible extension queue 6503. Compared 1687863 event pairs, 25868 based on Foata normal form. 3000/193087 useless extension candidates. Maximal degree in co-relation 261287. Up to 129000 conditions per place. [2023-11-29 02:23:18,429 INFO L140 encePairwiseOnDemand]: 86/89 looper letters, 78 selfloop transitions, 2 changer transitions 0/109 dead transitions. [2023-11-29 02:23:18,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 109 transitions, 408 flow [2023-11-29 02:23:18,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:23:18,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 02:23:18,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 186 transitions. [2023-11-29 02:23:18,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6966292134831461 [2023-11-29 02:23:18,431 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 186 transitions. [2023-11-29 02:23:18,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 186 transitions. [2023-11-29 02:23:18,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 02:23:18,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 186 transitions. [2023-11-29 02:23:18,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 62.0) internal successors, (186), 3 states have internal predecessors, (186), 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) [2023-11-29 02:23:18,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2023-11-29 02:23:18,433 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 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) [2023-11-29 02:23:18,433 INFO L175 Difference]: Start difference. First operand has 85 places, 78 transitions, 182 flow. Second operand 3 states and 186 transitions. [2023-11-29 02:23:18,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 109 transitions, 408 flow [2023-11-29 02:23:18,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 109 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 02:23:18,467 INFO L231 Difference]: Finished difference. Result has 84 places, 77 transitions, 180 flow [2023-11-29 02:23:18,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=84, PETRI_TRANSITIONS=77} [2023-11-29 02:23:18,467 INFO L281 CegarLoopForPetriNet]: 90 programPoint places, -6 predicate places. [2023-11-29 02:23:18,467 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 77 transitions, 180 flow [2023-11-29 02:23:18,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:23:18,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:23:18,468 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2023-11-29 02:23:18,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 02:23:18,468 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-29 02:23:18,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:23:18,468 INFO L85 PathProgramCache]: Analyzing trace with hash 277113524, now seen corresponding path program 1 times [2023-11-29 02:23:18,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:23:18,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527568612] [2023-11-29 02:23:18,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:23:18,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:23:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:23:18,479 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 02:23:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 02:23:18,492 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 02:23:18,492 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 02:23:18,492 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-11-29 02:23:18,492 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-11-29 02:23:18,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-11-29 02:23:18,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-11-29 02:23:18,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-11-29 02:23:18,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-11-29 02:23:18,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-11-29 02:23:18,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-11-29 02:23:18,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-11-29 02:23:18,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-11-29 02:23:18,493 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-11-29 02:23:18,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-11-29 02:23:18,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-11-29 02:23:18,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-11-29 02:23:18,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-11-29 02:23:18,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-11-29 02:23:18,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-11-29 02:23:18,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-11-29 02:23:18,494 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-11-29 02:23:18,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-11-29 02:23:18,495 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-11-29 02:23:18,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-29 02:23:18,495 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:23:18,495 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-29 02:23:18,496 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-29 02:23:18,536 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 02:23:18,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 110 transitions, 260 flow [2023-11-29 02:23:18,551 INFO L124 PetriNetUnfolderBase]: 10/124 cut-off events. [2023-11-29 02:23:18,551 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-29 02:23:18,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 124 events. 10/124 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 409 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 118. Up to 6 conditions per place. [2023-11-29 02:23:18,552 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 110 transitions, 260 flow [2023-11-29 02:23:18,553 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 110 transitions, 260 flow [2023-11-29 02:23:18,555 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:23:18,555 INFO L357 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, mHoare=true, 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;@634124e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:23:18,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-29 02:23:18,556 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 02:23:18,556 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-29 02:23:18,556 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 02:23:18,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 02:23:18,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 02:23:18,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-29 02:23:18,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:23:18,557 INFO L85 PathProgramCache]: Analyzing trace with hash 614438747, now seen corresponding path program 1 times [2023-11-29 02:23:18,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:23:18,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736819904] [2023-11-29 02:23:18,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:23:18,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:23:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:23:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:23:18,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:23:18,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736819904] [2023-11-29 02:23:18,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736819904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:23:18,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:23:18,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:23:18,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909700470] [2023-11-29 02:23:18,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:23:18,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:23:18,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:23:18,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:23:18,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:23:18,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 110 [2023-11-29 02:23:18,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 110 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 02:23:18,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 02:23:18,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 110 [2023-11-29 02:23:18,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand