./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_3279ccd2-f53c-4483-8527-a04d26eff420/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3279ccd2-f53c-4483-8527-a04d26eff420/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3279ccd2-f53c-4483-8527-a04d26eff420/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3279ccd2-f53c-4483-8527-a04d26eff420/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3279ccd2-f53c-4483-8527-a04d26eff420/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3279ccd2-f53c-4483-8527-a04d26eff420/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 169d16a82e2efb21b41720aab8fadcf5ecf67324651e69e91d6cb4f921e3dcd4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:49:37,601 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:49:37,671 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3279ccd2-f53c-4483-8527-a04d26eff420/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:49:37,677 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:49:37,677 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:49:37,702 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:49:37,703 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:49:37,704 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:49:37,704 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:49:37,705 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:49:37,706 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:49:37,706 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:49:37,707 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:49:37,707 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:49:37,708 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:49:37,708 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:49:37,709 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:49:37,709 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:49:37,710 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:49:37,710 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:49:37,711 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:49:37,711 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:49:37,712 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:49:37,712 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:49:37,712 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:49:37,713 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:49:37,713 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:49:37,714 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:49:37,714 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:49:37,714 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:49:37,715 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:49:37,715 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:49:37,715 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:49:37,716 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:49:37,716 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:49:37,716 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:49:37,716 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:49:37,717 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:49:37,717 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:49:37,717 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_3279ccd2-f53c-4483-8527-a04d26eff420/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3279ccd2-f53c-4483-8527-a04d26eff420/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 169d16a82e2efb21b41720aab8fadcf5ecf67324651e69e91d6cb4f921e3dcd4 [2023-11-06 22:49:38,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:49:38,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:49:38,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:49:38,059 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:49:38,060 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:49:38,061 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3279ccd2-f53c-4483-8527-a04d26eff420/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2023-11-06 22:49:41,181 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:49:41,470 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:49:41,471 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3279ccd2-f53c-4483-8527-a04d26eff420/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2023-11-06 22:49:41,485 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3279ccd2-f53c-4483-8527-a04d26eff420/bin/uautomizer-verify-WvqO1wxjHP/data/42fac565b/c5f059c7896c4c269e36313ff484cd8b/FLAGb7e454d7c [2023-11-06 22:49:41,500 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3279ccd2-f53c-4483-8527-a04d26eff420/bin/uautomizer-verify-WvqO1wxjHP/data/42fac565b/c5f059c7896c4c269e36313ff484cd8b [2023-11-06 22:49:41,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:49:41,504 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:49:41,506 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:49:41,506 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:49:41,513 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:49:41,514 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:41" (1/1) ... [2023-11-06 22:49:41,515 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50479bb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:41, skipping insertion in model container [2023-11-06 22:49:41,515 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:49:41" (1/1) ... [2023-11-06 22:49:41,623 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:49:41,953 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3279ccd2-f53c-4483-8527-a04d26eff420/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[13215,13228] [2023-11-06 22:49:42,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:49:42,110 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:49:42,331 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3279ccd2-f53c-4483-8527-a04d26eff420/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c[13215,13228] [2023-11-06 22:49:42,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:49:42,508 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:49:42,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:42 WrapperNode [2023-11-06 22:49:42,509 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:49:42,510 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:49:42,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:49:42,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:49:42,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:42" (1/1) ... [2023-11-06 22:49:42,546 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:42" (1/1) ... [2023-11-06 22:49:42,628 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1427 [2023-11-06 22:49:42,628 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:49:42,629 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:49:42,629 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:49:42,630 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:49:42,640 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:42" (1/1) ... [2023-11-06 22:49:42,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:42" (1/1) ... [2023-11-06 22:49:42,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:42" (1/1) ... [2023-11-06 22:49:42,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:42" (1/1) ... [2023-11-06 22:49:42,695 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:42" (1/1) ... [2023-11-06 22:49:42,722 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:42" (1/1) ... [2023-11-06 22:49:42,727 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:42" (1/1) ... [2023-11-06 22:49:42,733 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:42" (1/1) ... [2023-11-06 22:49:42,757 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:49:42,758 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:49:42,758 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:49:42,758 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:49:42,759 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:42" (1/1) ... [2023-11-06 22:49:42,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:49:42,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3279ccd2-f53c-4483-8527-a04d26eff420/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:49:42,826 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3279ccd2-f53c-4483-8527-a04d26eff420/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:49:42,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3279ccd2-f53c-4483-8527-a04d26eff420/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:49:42,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:49:42,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:49:42,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:49:42,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:49:43,042 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:49:43,044 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:49:44,130 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:49:44,151 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:49:44,152 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:49:44,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:44 BoogieIcfgContainer [2023-11-06 22:49:44,155 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:49:44,160 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:49:44,160 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:49:44,163 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:49:44,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:49:41" (1/3) ... [2023-11-06 22:49:44,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a12120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:49:44, skipping insertion in model container [2023-11-06 22:49:44,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:49:42" (2/3) ... [2023-11-06 22:49:44,166 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65a12120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:49:44, skipping insertion in model container [2023-11-06 22:49:44,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:49:44" (3/3) ... [2023-11-06 22:49:44,168 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2023-11-06 22:49:44,186 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:49:44,186 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:49:44,278 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:49:44,287 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=LoopsAndPotentialCycles, 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;@272a6cab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:49:44,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:49:44,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 436 states, 404 states have (on average 1.6485148514851484) internal successors, (666), 435 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:44,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-06 22:49:44,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:44,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:44,323 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:44,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:44,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1653668950, now seen corresponding path program 1 times [2023-11-06 22:49:44,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:44,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332491852] [2023-11-06 22:49:44,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:44,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:44,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:44,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:44,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332491852] [2023-11-06 22:49:44,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332491852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:44,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:44,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:49:44,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544791705] [2023-11-06 22:49:44,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:44,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:49:44,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:44,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:49:44,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:49:45,002 INFO L87 Difference]: Start difference. First operand has 436 states, 404 states have (on average 1.6485148514851484) internal successors, (666), 435 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:45,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:45,214 INFO L93 Difference]: Finished difference Result 810 states and 1268 transitions. [2023-11-06 22:49:45,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:49:45,216 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2023-11-06 22:49:45,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:45,250 INFO L225 Difference]: With dead ends: 810 [2023-11-06 22:49:45,252 INFO L226 Difference]: Without dead ends: 403 [2023-11-06 22:49:45,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:49:45,261 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 149 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:45,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 1789 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:49:45,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2023-11-06 22:49:45,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2023-11-06 22:49:45,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.5497512437810945) internal successors, (623), 402 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:45,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 623 transitions. [2023-11-06 22:49:45,340 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 623 transitions. Word has length 103 [2023-11-06 22:49:45,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:45,340 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 623 transitions. [2023-11-06 22:49:45,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:45,341 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 623 transitions. [2023-11-06 22:49:45,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-06 22:49:45,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:45,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:45,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:49:45,346 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:45,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:45,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1984435279, now seen corresponding path program 1 times [2023-11-06 22:49:45,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:45,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778341103] [2023-11-06 22:49:45,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:45,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:45,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:45,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:45,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778341103] [2023-11-06 22:49:45,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778341103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:45,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:45,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:45,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403443638] [2023-11-06 22:49:45,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:45,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:45,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:45,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:45,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:45,607 INFO L87 Difference]: Start difference. First operand 403 states and 623 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:45,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:45,709 INFO L93 Difference]: Finished difference Result 952 states and 1499 transitions. [2023-11-06 22:49:45,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:45,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2023-11-06 22:49:45,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:45,717 INFO L225 Difference]: With dead ends: 952 [2023-11-06 22:49:45,718 INFO L226 Difference]: Without dead ends: 611 [2023-11-06 22:49:45,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:45,720 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 419 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:45,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1096 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:45,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2023-11-06 22:49:45,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 609. [2023-11-06 22:49:45,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 608 states have (on average 1.5608552631578947) internal successors, (949), 608 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:45,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 949 transitions. [2023-11-06 22:49:45,831 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 949 transitions. Word has length 134 [2023-11-06 22:49:45,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:45,833 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 949 transitions. [2023-11-06 22:49:45,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:45,834 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 949 transitions. [2023-11-06 22:49:45,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-06 22:49:45,844 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:45,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:45,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:49:45,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:45,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:45,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1203481045, now seen corresponding path program 1 times [2023-11-06 22:49:45,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:45,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141371475] [2023-11-06 22:49:45,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:45,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:46,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:46,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:46,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141371475] [2023-11-06 22:49:46,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141371475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:46,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:46,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:46,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637604885] [2023-11-06 22:49:46,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:46,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:46,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:46,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:46,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:46,073 INFO L87 Difference]: Start difference. First operand 609 states and 949 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:46,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:46,186 INFO L93 Difference]: Finished difference Result 1494 states and 2358 transitions. [2023-11-06 22:49:46,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:46,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2023-11-06 22:49:46,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:46,193 INFO L225 Difference]: With dead ends: 1494 [2023-11-06 22:49:46,193 INFO L226 Difference]: Without dead ends: 960 [2023-11-06 22:49:46,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:46,196 INFO L413 NwaCegarLoop]: 720 mSDtfsCounter, 403 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:46,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 1181 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:46,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2023-11-06 22:49:46,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 958. [2023-11-06 22:49:46,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 957 states have (on average 1.5663531870428422) internal successors, (1499), 957 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:46,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1499 transitions. [2023-11-06 22:49:46,284 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1499 transitions. Word has length 136 [2023-11-06 22:49:46,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:46,288 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1499 transitions. [2023-11-06 22:49:46,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:46,289 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1499 transitions. [2023-11-06 22:49:46,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-06 22:49:46,293 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:46,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:46,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:49:46,296 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:46,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:46,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1755736889, now seen corresponding path program 1 times [2023-11-06 22:49:46,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:46,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067909272] [2023-11-06 22:49:46,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:46,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:46,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:46,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:46,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067909272] [2023-11-06 22:49:46,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067909272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:46,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:46,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:46,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733346054] [2023-11-06 22:49:46,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:46,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:46,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:46,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:46,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:46,463 INFO L87 Difference]: Start difference. First operand 958 states and 1499 transitions. Second operand has 3 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) [2023-11-06 22:49:46,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:46,722 INFO L93 Difference]: Finished difference Result 2397 states and 3779 transitions. [2023-11-06 22:49:46,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:46,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 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) Word has length 138 [2023-11-06 22:49:46,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:46,735 INFO L225 Difference]: With dead ends: 2397 [2023-11-06 22:49:46,735 INFO L226 Difference]: Without dead ends: 1527 [2023-11-06 22:49:46,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:46,749 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 389 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:46,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 1026 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:46,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2023-11-06 22:49:46,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1525. [2023-11-06 22:49:46,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 1.56496062992126) internal successors, (2385), 1524 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:46,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2385 transitions. [2023-11-06 22:49:46,908 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2385 transitions. Word has length 138 [2023-11-06 22:49:46,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:46,909 INFO L495 AbstractCegarLoop]: Abstraction has 1525 states and 2385 transitions. [2023-11-06 22:49:46,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-11-06 22:49:46,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2385 transitions. [2023-11-06 22:49:46,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-06 22:49:46,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:46,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:46,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:49:46,915 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:46,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:46,916 INFO L85 PathProgramCache]: Analyzing trace with hash -175339215, now seen corresponding path program 1 times [2023-11-06 22:49:46,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:46,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94138820] [2023-11-06 22:49:46,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:46,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:47,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:47,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94138820] [2023-11-06 22:49:47,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94138820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:47,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:47,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:47,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346615179] [2023-11-06 22:49:47,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:47,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:47,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:47,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:47,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:47,054 INFO L87 Difference]: Start difference. First operand 1525 states and 2385 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:47,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:47,360 INFO L93 Difference]: Finished difference Result 3818 states and 5988 transitions. [2023-11-06 22:49:47,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:47,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2023-11-06 22:49:47,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:47,375 INFO L225 Difference]: With dead ends: 3818 [2023-11-06 22:49:47,376 INFO L226 Difference]: Without dead ends: 2394 [2023-11-06 22:49:47,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:47,381 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 374 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:47,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 991 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:47,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2394 states. [2023-11-06 22:49:47,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2394 to 2392. [2023-11-06 22:49:47,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2392 states, 2391 states have (on average 1.5554161438728566) internal successors, (3719), 2391 states have internal predecessors, (3719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:47,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2392 states to 2392 states and 3719 transitions. [2023-11-06 22:49:47,711 INFO L78 Accepts]: Start accepts. Automaton has 2392 states and 3719 transitions. Word has length 140 [2023-11-06 22:49:47,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:47,712 INFO L495 AbstractCegarLoop]: Abstraction has 2392 states and 3719 transitions. [2023-11-06 22:49:47,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:47,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2392 states and 3719 transitions. [2023-11-06 22:49:47,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-06 22:49:47,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:47,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:47,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:49:47,720 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:47,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:47,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1755218565, now seen corresponding path program 1 times [2023-11-06 22:49:47,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:47,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256380142] [2023-11-06 22:49:47,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:47,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:48,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:48,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:48,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256380142] [2023-11-06 22:49:48,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256380142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:48,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:48,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:49:48,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448925448] [2023-11-06 22:49:48,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:48,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:49:48,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:48,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:49:48,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:49:48,016 INFO L87 Difference]: Start difference. First operand 2392 states and 3719 transitions. Second operand has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:50,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:50,204 INFO L93 Difference]: Finished difference Result 14072 states and 21897 transitions. [2023-11-06 22:49:50,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:49:50,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2023-11-06 22:49:50,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:50,276 INFO L225 Difference]: With dead ends: 14072 [2023-11-06 22:49:50,277 INFO L226 Difference]: Without dead ends: 11785 [2023-11-06 22:49:50,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:49:50,285 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 4316 mSDsluCounter, 5388 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4316 SdHoareTripleChecker+Valid, 5983 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:50,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4316 Valid, 5983 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:49:50,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11785 states. [2023-11-06 22:49:51,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11785 to 4734. [2023-11-06 22:49:51,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4734 states, 4733 states have (on average 1.5387703359391507) internal successors, (7283), 4733 states have internal predecessors, (7283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:51,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4734 states to 4734 states and 7283 transitions. [2023-11-06 22:49:51,344 INFO L78 Accepts]: Start accepts. Automaton has 4734 states and 7283 transitions. Word has length 142 [2023-11-06 22:49:51,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:51,346 INFO L495 AbstractCegarLoop]: Abstraction has 4734 states and 7283 transitions. [2023-11-06 22:49:51,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:51,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4734 states and 7283 transitions. [2023-11-06 22:49:51,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-06 22:49:51,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:51,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:51,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:49:51,363 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:51,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:51,364 INFO L85 PathProgramCache]: Analyzing trace with hash -709986120, now seen corresponding path program 1 times [2023-11-06 22:49:51,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:51,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409557492] [2023-11-06 22:49:51,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:51,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:51,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:51,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:51,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409557492] [2023-11-06 22:49:51,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409557492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:51,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:51,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:51,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651852060] [2023-11-06 22:49:51,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:51,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:51,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:51,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:51,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:51,482 INFO L87 Difference]: Start difference. First operand 4734 states and 7283 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:53,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:53,216 INFO L93 Difference]: Finished difference Result 13106 states and 20134 transitions. [2023-11-06 22:49:53,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:53,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2023-11-06 22:49:53,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:53,269 INFO L225 Difference]: With dead ends: 13106 [2023-11-06 22:49:53,269 INFO L226 Difference]: Without dead ends: 8416 [2023-11-06 22:49:53,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:53,279 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 413 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:53,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1443 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:53,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8416 states. [2023-11-06 22:49:54,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8416 to 8414. [2023-11-06 22:49:54,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8414 states, 8413 states have (on average 1.5253773921312255) internal successors, (12833), 8413 states have internal predecessors, (12833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:54,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8414 states to 8414 states and 12833 transitions. [2023-11-06 22:49:54,592 INFO L78 Accepts]: Start accepts. Automaton has 8414 states and 12833 transitions. Word has length 145 [2023-11-06 22:49:54,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:54,593 INFO L495 AbstractCegarLoop]: Abstraction has 8414 states and 12833 transitions. [2023-11-06 22:49:54,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:54,593 INFO L276 IsEmpty]: Start isEmpty. Operand 8414 states and 12833 transitions. [2023-11-06 22:49:54,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-06 22:49:54,617 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:54,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:54,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:49:54,618 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:54,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:54,619 INFO L85 PathProgramCache]: Analyzing trace with hash -380882047, now seen corresponding path program 1 times [2023-11-06 22:49:54,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:54,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824205524] [2023-11-06 22:49:54,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:54,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:54,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:54,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:54,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824205524] [2023-11-06 22:49:54,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824205524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:54,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:54,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:54,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433139808] [2023-11-06 22:49:54,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:54,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:54,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:54,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:54,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:54,731 INFO L87 Difference]: Start difference. First operand 8414 states and 12833 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:57,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:57,181 INFO L93 Difference]: Finished difference Result 24239 states and 36920 transitions. [2023-11-06 22:49:57,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:49:57,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2023-11-06 22:49:57,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:57,226 INFO L225 Difference]: With dead ends: 24239 [2023-11-06 22:49:57,226 INFO L226 Difference]: Without dead ends: 15971 [2023-11-06 22:49:57,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:57,241 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 449 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:57,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1087 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:49:57,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15971 states. [2023-11-06 22:49:59,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15971 to 15969. [2023-11-06 22:49:59,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15969 states, 15968 states have (on average 1.5127129258517034) internal successors, (24155), 15968 states have internal predecessors, (24155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:59,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15969 states to 15969 states and 24155 transitions. [2023-11-06 22:49:59,080 INFO L78 Accepts]: Start accepts. Automaton has 15969 states and 24155 transitions. Word has length 146 [2023-11-06 22:49:59,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:59,081 INFO L495 AbstractCegarLoop]: Abstraction has 15969 states and 24155 transitions. [2023-11-06 22:49:59,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:59,082 INFO L276 IsEmpty]: Start isEmpty. Operand 15969 states and 24155 transitions. [2023-11-06 22:49:59,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-06 22:49:59,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:59,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:49:59,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:49:59,125 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:59,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:59,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1424530646, now seen corresponding path program 1 times [2023-11-06 22:49:59,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:49:59,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540366654] [2023-11-06 22:49:59,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:49:59,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:49:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:49:59,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:59,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:49:59,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540366654] [2023-11-06 22:49:59,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540366654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:49:59,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:49:59,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:49:59,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359933806] [2023-11-06 22:49:59,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:49:59,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:49:59,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:49:59,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:49:59,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:49:59,224 INFO L87 Difference]: Start difference. First operand 15969 states and 24155 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:03,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:03,595 INFO L93 Difference]: Finished difference Result 45751 states and 69018 transitions. [2023-11-06 22:50:03,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:50:03,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2023-11-06 22:50:03,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:03,666 INFO L225 Difference]: With dead ends: 45751 [2023-11-06 22:50:03,666 INFO L226 Difference]: Without dead ends: 30164 [2023-11-06 22:50:03,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:50:03,687 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 431 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:03,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1087 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:50:03,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30164 states. [2023-11-06 22:50:07,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30164 to 30162. [2023-11-06 22:50:07,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30162 states, 30161 states have (on average 1.497132057955638) internal successors, (45155), 30161 states have internal predecessors, (45155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:07,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30162 states to 30162 states and 45155 transitions. [2023-11-06 22:50:07,884 INFO L78 Accepts]: Start accepts. Automaton has 30162 states and 45155 transitions. Word has length 146 [2023-11-06 22:50:07,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:07,884 INFO L495 AbstractCegarLoop]: Abstraction has 30162 states and 45155 transitions. [2023-11-06 22:50:07,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:07,885 INFO L276 IsEmpty]: Start isEmpty. Operand 30162 states and 45155 transitions. [2023-11-06 22:50:07,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-06 22:50:07,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:07,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:07,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:50:07,967 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:50:07,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:07,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1146158271, now seen corresponding path program 1 times [2023-11-06 22:50:07,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:07,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207526918] [2023-11-06 22:50:07,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:07,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:08,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:08,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207526918] [2023-11-06 22:50:08,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207526918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:08,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:08,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:50:08,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431698655] [2023-11-06 22:50:08,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:08,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:50:08,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:08,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:50:08,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:50:08,088 INFO L87 Difference]: Start difference. First operand 30162 states and 45155 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:16,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:50:16,096 INFO L93 Difference]: Finished difference Result 85361 states and 127210 transitions. [2023-11-06 22:50:16,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:50:16,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2023-11-06 22:50:16,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:50:16,209 INFO L225 Difference]: With dead ends: 85361 [2023-11-06 22:50:16,209 INFO L226 Difference]: Without dead ends: 56499 [2023-11-06 22:50:16,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:50:16,248 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 413 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:50:16,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1087 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:50:16,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56499 states. [2023-11-06 22:50:23,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56499 to 56497. [2023-11-06 22:50:23,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56497 states, 56496 states have (on average 1.4774320305862363) internal successors, (83469), 56496 states have internal predecessors, (83469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:24,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56497 states to 56497 states and 83469 transitions. [2023-11-06 22:50:24,050 INFO L78 Accepts]: Start accepts. Automaton has 56497 states and 83469 transitions. Word has length 146 [2023-11-06 22:50:24,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:50:24,050 INFO L495 AbstractCegarLoop]: Abstraction has 56497 states and 83469 transitions. [2023-11-06 22:50:24,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:50:24,051 INFO L276 IsEmpty]: Start isEmpty. Operand 56497 states and 83469 transitions. [2023-11-06 22:50:24,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-06 22:50:24,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:50:24,141 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:50:24,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:50:24,142 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:50:24,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:50:24,143 INFO L85 PathProgramCache]: Analyzing trace with hash -405922622, now seen corresponding path program 1 times [2023-11-06 22:50:24,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:50:24,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380409571] [2023-11-06 22:50:24,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:50:24,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:50:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:50:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:50:24,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:50:24,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380409571] [2023-11-06 22:50:24,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380409571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:50:24,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:50:24,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:50:24,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387220447] [2023-11-06 22:50:24,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:50:24,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:50:24,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:50:24,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:50:24,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:50:24,251 INFO L87 Difference]: Start difference. First operand 56497 states and 83469 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)