./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-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_32bcc16c-8ff1-48fb-ab28-21b267c558a1/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32bcc16c-8ff1-48fb-ab28-21b267c558a1/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_32bcc16c-8ff1-48fb-ab28-21b267c558a1/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32bcc16c-8ff1-48fb-ab28-21b267c558a1/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32bcc16c-8ff1-48fb-ab28-21b267c558a1/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_32bcc16c-8ff1-48fb-ab28-21b267c558a1/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 453217a894ab839ac749d51e6f81154421ad61236b47a16877fbef21d8ae30a8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:31:39,673 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:31:39,791 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32bcc16c-8ff1-48fb-ab28-21b267c558a1/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:31:39,799 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:31:39,800 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:31:39,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:31:39,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:31:39,858 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:31:39,859 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:31:39,864 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:31:39,865 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:31:39,865 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:31:39,866 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:31:39,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:31:39,868 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:31:39,868 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:31:39,869 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:31:39,869 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:31:39,870 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:31:39,870 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:31:39,871 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:31:39,871 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:31:39,872 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:31:39,872 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:31:39,873 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:31:39,873 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:31:39,874 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:31:39,874 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:31:39,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:31:39,875 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:31:39,876 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:31:39,877 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:31:39,877 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:31:39,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:31:39,878 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:31:39,878 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:31:39,878 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:31:39,878 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:31:39,879 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:31:39,879 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_32bcc16c-8ff1-48fb-ab28-21b267c558a1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32bcc16c-8ff1-48fb-ab28-21b267c558a1/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 453217a894ab839ac749d51e6f81154421ad61236b47a16877fbef21d8ae30a8 [2023-11-06 22:31:40,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:31:40,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:31:40,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:31:40,287 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:31:40,288 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:31:40,289 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32bcc16c-8ff1-48fb-ab28-21b267c558a1/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2023-11-06 22:31:43,374 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:31:43,726 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:31:43,727 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32bcc16c-8ff1-48fb-ab28-21b267c558a1/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2023-11-06 22:31:43,741 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32bcc16c-8ff1-48fb-ab28-21b267c558a1/bin/uautomizer-verify-WvqO1wxjHP/data/fa52d0cea/55c61e5be55c488089dcfb04d65bca90/FLAG71888764e [2023-11-06 22:31:43,758 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32bcc16c-8ff1-48fb-ab28-21b267c558a1/bin/uautomizer-verify-WvqO1wxjHP/data/fa52d0cea/55c61e5be55c488089dcfb04d65bca90 [2023-11-06 22:31:43,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:31:43,763 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:31:43,764 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:31:43,764 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:31:43,770 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:31:43,771 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:31:43" (1/1) ... [2023-11-06 22:31:43,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a864250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:43, skipping insertion in model container [2023-11-06 22:31:43,772 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:31:43" (1/1) ... [2023-11-06 22:31:43,824 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:31:44,058 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_32bcc16c-8ff1-48fb-ab28-21b267c558a1/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[7253,7266] [2023-11-06 22:31:44,168 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:31:44,188 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:31:44,264 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_32bcc16c-8ff1-48fb-ab28-21b267c558a1/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[7253,7266] [2023-11-06 22:31:44,306 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:31:44,331 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:31:44,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:44 WrapperNode [2023-11-06 22:31:44,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:31:44,334 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:31:44,334 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:31:44,334 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:31:44,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:44" (1/1) ... [2023-11-06 22:31:44,359 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:44" (1/1) ... [2023-11-06 22:31:44,411 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 702 [2023-11-06 22:31:44,411 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:31:44,412 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:31:44,412 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:31:44,412 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:31:44,422 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:44" (1/1) ... [2023-11-06 22:31:44,423 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:44" (1/1) ... [2023-11-06 22:31:44,427 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:44" (1/1) ... [2023-11-06 22:31:44,427 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:44" (1/1) ... [2023-11-06 22:31:44,441 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:44" (1/1) ... [2023-11-06 22:31:44,448 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:44" (1/1) ... [2023-11-06 22:31:44,452 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:44" (1/1) ... [2023-11-06 22:31:44,456 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:44" (1/1) ... [2023-11-06 22:31:44,462 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:31:44,463 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:31:44,463 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:31:44,463 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:31:44,464 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:44" (1/1) ... [2023-11-06 22:31:44,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:31:44,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32bcc16c-8ff1-48fb-ab28-21b267c558a1/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:44,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32bcc16c-8ff1-48fb-ab28-21b267c558a1/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:31:44,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32bcc16c-8ff1-48fb-ab28-21b267c558a1/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:31:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:31:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:31:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:31:44,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:31:44,766 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:31:44,769 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:31:45,533 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:31:45,553 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:31:45,554 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:31:45,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:31:45 BoogieIcfgContainer [2023-11-06 22:31:45,558 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:31:45,583 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:31:45,583 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:31:45,586 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:31:45,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:31:43" (1/3) ... [2023-11-06 22:31:45,587 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500d230c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:31:45, skipping insertion in model container [2023-11-06 22:31:45,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:31:44" (2/3) ... [2023-11-06 22:31:45,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500d230c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:31:45, skipping insertion in model container [2023-11-06 22:31:45,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:31:45" (3/3) ... [2023-11-06 22:31:45,591 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2023-11-06 22:31:45,610 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:31:45,611 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:31:45,684 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:31:45,692 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;@32bc26b5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:31:45,693 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:31:45,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 169 states have (on average 1.7218934911242603) internal successors, (291), 170 states have internal predecessors, (291), 0 states have call successors, (0), 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 22:31:45,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-06 22:31:45,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:45,720 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] [2023-11-06 22:31:45,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:45,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:45,730 INFO L85 PathProgramCache]: Analyzing trace with hash 965210613, now seen corresponding path program 1 times [2023-11-06 22:31:45,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:45,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508043336] [2023-11-06 22:31:45,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:45,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:46,507 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 22:31:46,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:46,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508043336] [2023-11-06 22:31:46,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508043336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:46,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:46,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:31:46,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097653561] [2023-11-06 22:31:46,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:46,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:31:46,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:46,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:31:46,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:31:46,570 INFO L87 Difference]: Start difference. First operand has 171 states, 169 states have (on average 1.7218934911242603) internal successors, (291), 170 states have internal predecessors, (291), 0 states have call successors, (0), 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 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 22:31:46,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:46,863 INFO L93 Difference]: Finished difference Result 606 states and 981 transitions. [2023-11-06 22:31:46,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:31:46,866 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-11-06 22:31:46,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:46,883 INFO L225 Difference]: With dead ends: 606 [2023-11-06 22:31:46,884 INFO L226 Difference]: Without dead ends: 512 [2023-11-06 22:31:46,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:31:46,895 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 1755 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1755 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:46,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1755 Valid, 960 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:31:46,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2023-11-06 22:31:47,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 261. [2023-11-06 22:31:47,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.5) internal successors, (390), 260 states have internal predecessors, (390), 0 states have call successors, (0), 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 22:31:47,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 390 transitions. [2023-11-06 22:31:47,012 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 390 transitions. Word has length 64 [2023-11-06 22:31:47,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:47,014 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 390 transitions. [2023-11-06 22:31:47,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 22:31:47,015 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 390 transitions. [2023-11-06 22:31:47,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 22:31:47,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:47,029 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] [2023-11-06 22:31:47,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:31:47,030 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:47,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:47,031 INFO L85 PathProgramCache]: Analyzing trace with hash -404660772, now seen corresponding path program 1 times [2023-11-06 22:31:47,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:47,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963366523] [2023-11-06 22:31:47,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:47,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:47,350 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 22:31:47,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:47,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963366523] [2023-11-06 22:31:47,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963366523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:47,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:47,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:31:47,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852478077] [2023-11-06 22:31:47,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:47,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:31:47,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:47,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:31:47,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:31:47,356 INFO L87 Difference]: Start difference. First operand 261 states and 390 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 22:31:47,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:47,723 INFO L93 Difference]: Finished difference Result 969 states and 1486 transitions. [2023-11-06 22:31:47,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:31:47,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2023-11-06 22:31:47,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:47,731 INFO L225 Difference]: With dead ends: 969 [2023-11-06 22:31:47,731 INFO L226 Difference]: Without dead ends: 767 [2023-11-06 22:31:47,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:31:47,738 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 880 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:47,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 848 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:31:47,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2023-11-06 22:31:47,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 761. [2023-11-06 22:31:47,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 760 states have (on average 1.5223684210526316) internal successors, (1157), 760 states have internal predecessors, (1157), 0 states have call successors, (0), 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 22:31:47,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1157 transitions. [2023-11-06 22:31:47,911 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1157 transitions. Word has length 65 [2023-11-06 22:31:47,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:47,911 INFO L495 AbstractCegarLoop]: Abstraction has 761 states and 1157 transitions. [2023-11-06 22:31:47,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 22:31:47,912 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1157 transitions. [2023-11-06 22:31:47,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-06 22:31:47,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:47,920 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] [2023-11-06 22:31:47,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:31:47,921 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:47,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:47,931 INFO L85 PathProgramCache]: Analyzing trace with hash 372471029, now seen corresponding path program 1 times [2023-11-06 22:31:47,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:47,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251078444] [2023-11-06 22:31:47,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:47,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:48,127 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 22:31:48,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:48,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251078444] [2023-11-06 22:31:48,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251078444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:48,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:48,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:31:48,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816831709] [2023-11-06 22:31:48,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:48,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:31:48,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:48,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:31:48,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:31:48,130 INFO L87 Difference]: Start difference. First operand 761 states and 1157 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 22:31:48,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:48,671 INFO L93 Difference]: Finished difference Result 2033 states and 3131 transitions. [2023-11-06 22:31:48,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:31:48,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-11-06 22:31:48,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:48,683 INFO L225 Difference]: With dead ends: 2033 [2023-11-06 22:31:48,683 INFO L226 Difference]: Without dead ends: 1319 [2023-11-06 22:31:48,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:31:48,692 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 941 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:48,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 233 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:31:48,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2023-11-06 22:31:48,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1317. [2023-11-06 22:31:48,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 1316 states have (on average 1.5303951367781155) internal successors, (2014), 1316 states have internal predecessors, (2014), 0 states have call successors, (0), 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 22:31:48,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 2014 transitions. [2023-11-06 22:31:48,980 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 2014 transitions. Word has length 66 [2023-11-06 22:31:48,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:48,984 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 2014 transitions. [2023-11-06 22:31:48,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 22:31:48,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 2014 transitions. [2023-11-06 22:31:48,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-06 22:31:48,988 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:48,990 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] [2023-11-06 22:31:48,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:31:48,991 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:48,996 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:48,997 INFO L85 PathProgramCache]: Analyzing trace with hash 342598487, now seen corresponding path program 1 times [2023-11-06 22:31:48,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:48,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333718176] [2023-11-06 22:31:48,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:48,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:49,142 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 22:31:49,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:49,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333718176] [2023-11-06 22:31:49,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333718176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:49,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:49,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:31:49,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94230888] [2023-11-06 22:31:49,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:49,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:31:49,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:49,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:31:49,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:31:49,145 INFO L87 Difference]: Start difference. First operand 1317 states and 2014 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 22:31:49,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:49,862 INFO L93 Difference]: Finished difference Result 3529 states and 5448 transitions. [2023-11-06 22:31:49,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:31:49,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-11-06 22:31:49,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:49,875 INFO L225 Difference]: With dead ends: 3529 [2023-11-06 22:31:49,876 INFO L226 Difference]: Without dead ends: 2309 [2023-11-06 22:31:49,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:31:49,879 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 867 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:49,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 239 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:31:49,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2023-11-06 22:31:50,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 2307. [2023-11-06 22:31:50,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2307 states, 2306 states have (on average 1.533391153512576) internal successors, (3536), 2306 states have internal predecessors, (3536), 0 states have call successors, (0), 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 22:31:50,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2307 states to 2307 states and 3536 transitions. [2023-11-06 22:31:50,296 INFO L78 Accepts]: Start accepts. Automaton has 2307 states and 3536 transitions. Word has length 66 [2023-11-06 22:31:50,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:50,297 INFO L495 AbstractCegarLoop]: Abstraction has 2307 states and 3536 transitions. [2023-11-06 22:31:50,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 22:31:50,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2307 states and 3536 transitions. [2023-11-06 22:31:50,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-06 22:31:50,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:50,299 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] [2023-11-06 22:31:50,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:31:50,300 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:50,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:50,300 INFO L85 PathProgramCache]: Analyzing trace with hash -440340154, now seen corresponding path program 1 times [2023-11-06 22:31:50,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:50,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947186049] [2023-11-06 22:31:50,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:50,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:50,415 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 22:31:50,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:50,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947186049] [2023-11-06 22:31:50,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947186049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:50,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:50,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:31:50,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610226871] [2023-11-06 22:31:50,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:50,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:31:50,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:50,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:31:50,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:31:50,418 INFO L87 Difference]: Start difference. First operand 2307 states and 3536 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 22:31:51,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:51,443 INFO L93 Difference]: Finished difference Result 6570 states and 10123 transitions. [2023-11-06 22:31:51,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:31:51,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-11-06 22:31:51,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:51,468 INFO L225 Difference]: With dead ends: 6570 [2023-11-06 22:31:51,468 INFO L226 Difference]: Without dead ends: 4333 [2023-11-06 22:31:51,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:31:51,472 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 897 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:51,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 235 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:31:51,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4333 states. [2023-11-06 22:31:52,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4333 to 4331. [2023-11-06 22:31:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4331 states, 4330 states have (on average 1.530715935334873) internal successors, (6628), 4330 states have internal predecessors, (6628), 0 states have call successors, (0), 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 22:31:52,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4331 states to 4331 states and 6628 transitions. [2023-11-06 22:31:52,225 INFO L78 Accepts]: Start accepts. Automaton has 4331 states and 6628 transitions. Word has length 66 [2023-11-06 22:31:52,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:52,226 INFO L495 AbstractCegarLoop]: Abstraction has 4331 states and 6628 transitions. [2023-11-06 22:31:52,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 22:31:52,226 INFO L276 IsEmpty]: Start isEmpty. Operand 4331 states and 6628 transitions. [2023-11-06 22:31:52,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 22:31:52,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:52,228 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] [2023-11-06 22:31:52,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:31:52,229 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:52,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:52,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1058443688, now seen corresponding path program 1 times [2023-11-06 22:31:52,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:52,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767842190] [2023-11-06 22:31:52,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:52,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:52,491 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 22:31:52,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:52,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767842190] [2023-11-06 22:31:52,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767842190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:52,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:52,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:31:52,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850006784] [2023-11-06 22:31:52,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:52,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:31:52,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:52,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:31:52,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:31:52,494 INFO L87 Difference]: Start difference. First operand 4331 states and 6628 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 22:31:54,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:54,223 INFO L93 Difference]: Finished difference Result 8381 states and 12813 transitions. [2023-11-06 22:31:54,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:31:54,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-11-06 22:31:54,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:54,273 INFO L225 Difference]: With dead ends: 8381 [2023-11-06 22:31:54,273 INFO L226 Difference]: Without dead ends: 8379 [2023-11-06 22:31:54,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:31:54,278 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 228 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:54,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 935 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:31:54,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8379 states. [2023-11-06 22:31:55,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8379 to 4459. [2023-11-06 22:31:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4459 states, 4458 states have (on average 1.515477792732167) internal successors, (6756), 4458 states have internal predecessors, (6756), 0 states have call successors, (0), 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 22:31:55,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4459 states to 4459 states and 6756 transitions. [2023-11-06 22:31:55,246 INFO L78 Accepts]: Start accepts. Automaton has 4459 states and 6756 transitions. Word has length 67 [2023-11-06 22:31:55,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:55,246 INFO L495 AbstractCegarLoop]: Abstraction has 4459 states and 6756 transitions. [2023-11-06 22:31:55,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 22:31:55,247 INFO L276 IsEmpty]: Start isEmpty. Operand 4459 states and 6756 transitions. [2023-11-06 22:31:55,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 22:31:55,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:55,250 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] [2023-11-06 22:31:55,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:31:55,250 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:55,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:55,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1287643169, now seen corresponding path program 1 times [2023-11-06 22:31:55,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:55,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107254828] [2023-11-06 22:31:55,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:55,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:55,666 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 22:31:55,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:55,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107254828] [2023-11-06 22:31:55,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107254828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:55,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:55,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:31:55,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421835889] [2023-11-06 22:31:55,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:55,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:31:55,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:55,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:31:55,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:31:55,669 INFO L87 Difference]: Start difference. First operand 4459 states and 6756 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 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 22:32:00,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:00,186 INFO L93 Difference]: Finished difference Result 19542 states and 29407 transitions. [2023-11-06 22:32:00,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:32:00,187 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-11-06 22:32:00,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:00,274 INFO L225 Difference]: With dead ends: 19542 [2023-11-06 22:32:00,275 INFO L226 Difference]: Without dead ends: 16828 [2023-11-06 22:32:00,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2023-11-06 22:32:00,285 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 2460 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2460 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:00,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2460 Valid, 1085 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:32:00,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16828 states. [2023-11-06 22:32:01,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16828 to 4554. [2023-11-06 22:32:01,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4554 states, 4553 states have (on average 1.5117504941796618) internal successors, (6883), 4553 states have internal predecessors, (6883), 0 states have call successors, (0), 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 22:32:01,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4554 states to 4554 states and 6883 transitions. [2023-11-06 22:32:01,409 INFO L78 Accepts]: Start accepts. Automaton has 4554 states and 6883 transitions. Word has length 68 [2023-11-06 22:32:01,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:01,409 INFO L495 AbstractCegarLoop]: Abstraction has 4554 states and 6883 transitions. [2023-11-06 22:32:01,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 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 22:32:01,410 INFO L276 IsEmpty]: Start isEmpty. Operand 4554 states and 6883 transitions. [2023-11-06 22:32:01,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 22:32:01,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:01,412 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] [2023-11-06 22:32:01,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:32:01,412 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:01,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:01,413 INFO L85 PathProgramCache]: Analyzing trace with hash -106958945, now seen corresponding path program 1 times [2023-11-06 22:32:01,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:01,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195138738] [2023-11-06 22:32:01,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:01,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:01,790 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 22:32:01,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:01,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195138738] [2023-11-06 22:32:01,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195138738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:01,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:01,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:32:01,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389485130] [2023-11-06 22:32:01,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:01,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:32:01,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:01,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:32:01,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:32:01,796 INFO L87 Difference]: Start difference. First operand 4554 states and 6883 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 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 22:32:05,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:05,308 INFO L93 Difference]: Finished difference Result 12009 states and 18046 transitions. [2023-11-06 22:32:05,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:32:05,309 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-11-06 22:32:05,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:05,337 INFO L225 Difference]: With dead ends: 12009 [2023-11-06 22:32:05,337 INFO L226 Difference]: Without dead ends: 11350 [2023-11-06 22:32:05,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:32:05,343 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 1564 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:05,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1564 Valid, 1240 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-06 22:32:05,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11350 states. [2023-11-06 22:32:06,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11350 to 4554. [2023-11-06 22:32:06,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4554 states, 4553 states have (on average 1.5113112233692072) internal successors, (6881), 4553 states have internal predecessors, (6881), 0 states have call successors, (0), 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 22:32:06,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4554 states to 4554 states and 6881 transitions. [2023-11-06 22:32:06,749 INFO L78 Accepts]: Start accepts. Automaton has 4554 states and 6881 transitions. Word has length 68 [2023-11-06 22:32:06,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:06,750 INFO L495 AbstractCegarLoop]: Abstraction has 4554 states and 6881 transitions. [2023-11-06 22:32:06,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 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 22:32:06,750 INFO L276 IsEmpty]: Start isEmpty. Operand 4554 states and 6881 transitions. [2023-11-06 22:32:06,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 22:32:06,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:06,753 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] [2023-11-06 22:32:06,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:32:06,753 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:06,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:06,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1512924095, now seen corresponding path program 1 times [2023-11-06 22:32:06,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:06,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268118938] [2023-11-06 22:32:06,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:06,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:07,137 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 22:32:07,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:07,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268118938] [2023-11-06 22:32:07,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268118938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:07,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:07,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:32:07,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030310866] [2023-11-06 22:32:07,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:07,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:32:07,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:07,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:32:07,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:32:07,141 INFO L87 Difference]: Start difference. First operand 4554 states and 6881 transitions. Second operand has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 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 22:32:11,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:11,328 INFO L93 Difference]: Finished difference Result 15863 states and 23841 transitions. [2023-11-06 22:32:11,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:32:11,329 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-11-06 22:32:11,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:11,364 INFO L225 Difference]: With dead ends: 15863 [2023-11-06 22:32:11,364 INFO L226 Difference]: Without dead ends: 14193 [2023-11-06 22:32:11,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2023-11-06 22:32:11,372 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 1718 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1718 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:11,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1718 Valid, 1188 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:32:11,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14193 states. [2023-11-06 22:32:12,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14193 to 4695. [2023-11-06 22:32:12,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4695 states, 4694 states have (on average 1.5063911376224968) internal successors, (7071), 4694 states have internal predecessors, (7071), 0 states have call successors, (0), 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 22:32:12,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4695 states to 4695 states and 7071 transitions. [2023-11-06 22:32:12,546 INFO L78 Accepts]: Start accepts. Automaton has 4695 states and 7071 transitions. Word has length 68 [2023-11-06 22:32:12,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:12,546 INFO L495 AbstractCegarLoop]: Abstraction has 4695 states and 7071 transitions. [2023-11-06 22:32:12,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.8) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 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 22:32:12,546 INFO L276 IsEmpty]: Start isEmpty. Operand 4695 states and 7071 transitions. [2023-11-06 22:32:12,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 22:32:12,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:12,549 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] [2023-11-06 22:32:12,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:32:12,550 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:12,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:12,551 INFO L85 PathProgramCache]: Analyzing trace with hash 713262271, now seen corresponding path program 1 times [2023-11-06 22:32:12,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:12,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439917325] [2023-11-06 22:32:12,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:12,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:12,645 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 22:32:12,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:12,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439917325] [2023-11-06 22:32:12,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439917325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:12,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:12,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:32:12,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030440257] [2023-11-06 22:32:12,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:12,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:32:12,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:12,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:32:12,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:32:12,648 INFO L87 Difference]: Start difference. First operand 4695 states and 7071 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 22:32:14,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:14,891 INFO L93 Difference]: Finished difference Result 12743 states and 19250 transitions. [2023-11-06 22:32:14,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:32:14,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2023-11-06 22:32:14,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:14,912 INFO L225 Difference]: With dead ends: 12743 [2023-11-06 22:32:14,912 INFO L226 Difference]: Without dead ends: 8097 [2023-11-06 22:32:14,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:32:14,921 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 958 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:14,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 238 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:32:14,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8097 states. [2023-11-06 22:32:16,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8097 to 8095. [2023-11-06 22:32:16,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8095 states, 8094 states have (on average 1.503335804299481) internal successors, (12168), 8094 states have internal predecessors, (12168), 0 states have call successors, (0), 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 22:32:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8095 states to 8095 states and 12168 transitions. [2023-11-06 22:32:16,922 INFO L78 Accepts]: Start accepts. Automaton has 8095 states and 12168 transitions. Word has length 68 [2023-11-06 22:32:16,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:16,922 INFO L495 AbstractCegarLoop]: Abstraction has 8095 states and 12168 transitions. [2023-11-06 22:32:16,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 22:32:16,923 INFO L276 IsEmpty]: Start isEmpty. Operand 8095 states and 12168 transitions. [2023-11-06 22:32:16,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-06 22:32:16,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:16,927 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] [2023-11-06 22:32:16,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:32:16,927 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:16,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:16,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1715495471, now seen corresponding path program 1 times [2023-11-06 22:32:16,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:16,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244494716] [2023-11-06 22:32:16,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:16,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:17,095 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 22:32:17,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:17,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244494716] [2023-11-06 22:32:17,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244494716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:17,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:17,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:32:17,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353273691] [2023-11-06 22:32:17,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:17,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:32:17,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:17,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:32:17,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:32:17,098 INFO L87 Difference]: Start difference. First operand 8095 states and 12168 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 22:32:20,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:20,270 INFO L93 Difference]: Finished difference Result 21235 states and 31970 transitions. [2023-11-06 22:32:20,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:32:20,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-11-06 22:32:20,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:20,301 INFO L225 Difference]: With dead ends: 21235 [2023-11-06 22:32:20,301 INFO L226 Difference]: Without dead ends: 14065 [2023-11-06 22:32:20,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:32:20,313 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 158 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:20,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 680 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:32:20,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14065 states. [2023-11-06 22:32:23,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14065 to 14063. [2023-11-06 22:32:23,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14063 states, 14062 states have (on average 1.4916797041672594) internal successors, (20976), 14062 states have internal predecessors, (20976), 0 states have call successors, (0), 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 22:32:23,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14063 states to 14063 states and 20976 transitions. [2023-11-06 22:32:23,698 INFO L78 Accepts]: Start accepts. Automaton has 14063 states and 20976 transitions. Word has length 69 [2023-11-06 22:32:23,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:23,699 INFO L495 AbstractCegarLoop]: Abstraction has 14063 states and 20976 transitions. [2023-11-06 22:32:23,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 22:32:23,699 INFO L276 IsEmpty]: Start isEmpty. Operand 14063 states and 20976 transitions. [2023-11-06 22:32:23,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-06 22:32:23,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:23,702 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] [2023-11-06 22:32:23,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:32:23,703 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:23,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:23,703 INFO L85 PathProgramCache]: Analyzing trace with hash 494119873, now seen corresponding path program 1 times [2023-11-06 22:32:23,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:23,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331916795] [2023-11-06 22:32:23,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:23,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:23,757 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 22:32:23,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:23,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331916795] [2023-11-06 22:32:23,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331916795] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:23,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:23,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:32:23,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566772982] [2023-11-06 22:32:23,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:23,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:32:23,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:23,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:32:23,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:32:23,760 INFO L87 Difference]: Start difference. First operand 14063 states and 20976 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 22:32:28,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:28,132 INFO L93 Difference]: Finished difference Result 25563 states and 38153 transitions. [2023-11-06 22:32:28,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:32:28,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-11-06 22:32:28,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:28,153 INFO L225 Difference]: With dead ends: 25563 [2023-11-06 22:32:28,153 INFO L226 Difference]: Without dead ends: 17173 [2023-11-06 22:32:28,165 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 22:32:28,166 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 147 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:28,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 454 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:32:28,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17173 states. [2023-11-06 22:32:32,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17173 to 16955. [2023-11-06 22:32:32,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16955 states, 16954 states have (on average 1.4687389406629703) internal successors, (24901), 16954 states have internal predecessors, (24901), 0 states have call successors, (0), 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 22:32:32,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16955 states to 16955 states and 24901 transitions. [2023-11-06 22:32:32,555 INFO L78 Accepts]: Start accepts. Automaton has 16955 states and 24901 transitions. Word has length 69 [2023-11-06 22:32:32,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:32,555 INFO L495 AbstractCegarLoop]: Abstraction has 16955 states and 24901 transitions. [2023-11-06 22:32:32,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 22:32:32,556 INFO L276 IsEmpty]: Start isEmpty. Operand 16955 states and 24901 transitions. [2023-11-06 22:32:32,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-06 22:32:32,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:32,559 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] [2023-11-06 22:32:32,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:32:32,560 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:32,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:32,560 INFO L85 PathProgramCache]: Analyzing trace with hash -334349023, now seen corresponding path program 1 times [2023-11-06 22:32:32,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:32,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787903939] [2023-11-06 22:32:32,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:32,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:32,612 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 22:32:32,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:32,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787903939] [2023-11-06 22:32:32,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787903939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:32,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:32,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:32:32,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490211396] [2023-11-06 22:32:32,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:32,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:32:32,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:32,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:32:32,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:32:32,615 INFO L87 Difference]: Start difference. First operand 16955 states and 24901 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 22:32:38,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:38,981 INFO L93 Difference]: Finished difference Result 37992 states and 55827 transitions. [2023-11-06 22:32:38,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:32:38,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-11-06 22:32:38,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:39,008 INFO L225 Difference]: With dead ends: 37992 [2023-11-06 22:32:39,008 INFO L226 Difference]: Without dead ends: 23316 [2023-11-06 22:32:39,019 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 22:32:39,020 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 162 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:39,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 452 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:32:39,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23316 states. [2023-11-06 22:32:43,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23316 to 16832. [2023-11-06 22:32:43,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16832 states, 16831 states have (on average 1.4500029707088111) internal successors, (24405), 16831 states have internal predecessors, (24405), 0 states have call successors, (0), 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 22:32:43,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16832 states to 16832 states and 24405 transitions. [2023-11-06 22:32:43,760 INFO L78 Accepts]: Start accepts. Automaton has 16832 states and 24405 transitions. Word has length 69 [2023-11-06 22:32:43,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:43,761 INFO L495 AbstractCegarLoop]: Abstraction has 16832 states and 24405 transitions. [2023-11-06 22:32:43,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 22:32:43,761 INFO L276 IsEmpty]: Start isEmpty. Operand 16832 states and 24405 transitions. [2023-11-06 22:32:43,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-06 22:32:43,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:43,765 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] [2023-11-06 22:32:43,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:32:43,765 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:43,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:43,766 INFO L85 PathProgramCache]: Analyzing trace with hash -2084184064, now seen corresponding path program 1 times [2023-11-06 22:32:43,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:43,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324536738] [2023-11-06 22:32:43,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:43,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:43,821 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 22:32:43,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:43,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324536738] [2023-11-06 22:32:43,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324536738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:43,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:43,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:32:43,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678969918] [2023-11-06 22:32:43,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:43,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:32:43,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:43,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:32:43,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:32:43,824 INFO L87 Difference]: Start difference. First operand 16832 states and 24405 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 22:32:49,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:49,471 INFO L93 Difference]: Finished difference Result 23084 states and 33322 transitions. [2023-11-06 22:32:49,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:32:49,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-11-06 22:32:49,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:49,492 INFO L225 Difference]: With dead ends: 23084 [2023-11-06 22:32:49,492 INFO L226 Difference]: Without dead ends: 17194 [2023-11-06 22:32:49,499 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 22:32:49,500 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 134 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:49,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 436 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:32:49,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17194 states. [2023-11-06 22:32:54,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17194 to 15512. [2023-11-06 22:32:54,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15512 states, 15511 states have (on average 1.4199600283669653) internal successors, (22025), 15511 states have internal predecessors, (22025), 0 states have call successors, (0), 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 22:32:54,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15512 states to 15512 states and 22025 transitions. [2023-11-06 22:32:54,059 INFO L78 Accepts]: Start accepts. Automaton has 15512 states and 22025 transitions. Word has length 69 [2023-11-06 22:32:54,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:54,060 INFO L495 AbstractCegarLoop]: Abstraction has 15512 states and 22025 transitions. [2023-11-06 22:32:54,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 22:32:54,060 INFO L276 IsEmpty]: Start isEmpty. Operand 15512 states and 22025 transitions. [2023-11-06 22:32:54,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-06 22:32:54,067 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:54,067 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] [2023-11-06 22:32:54,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:32:54,068 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:54,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:54,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1338735588, now seen corresponding path program 1 times [2023-11-06 22:32:54,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:54,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805976340] [2023-11-06 22:32:54,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:54,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:54,189 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 22:32:54,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:54,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805976340] [2023-11-06 22:32:54,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805976340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:32:54,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:32:54,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:32:54,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106020282] [2023-11-06 22:32:54,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:32:54,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:32:54,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:54,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:32:54,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:32:54,192 INFO L87 Difference]: Start difference. First operand 15512 states and 22025 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:02,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:02,171 INFO L93 Difference]: Finished difference Result 33025 states and 47290 transitions. [2023-11-06 22:33:02,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:33:02,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-11-06 22:33:02,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:02,203 INFO L225 Difference]: With dead ends: 33025 [2023-11-06 22:33:02,203 INFO L226 Difference]: Without dead ends: 26571 [2023-11-06 22:33:02,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:33:02,213 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1027 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1027 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:02,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1027 Valid, 1066 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:33:02,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26571 states. [2023-11-06 22:33:08,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26571 to 21931. [2023-11-06 22:33:08,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21931 states, 21930 states have (on average 1.420656634746922) internal successors, (31155), 21930 states have internal predecessors, (31155), 0 states have call successors, (0), 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 22:33:08,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21931 states to 21931 states and 31155 transitions. [2023-11-06 22:33:08,947 INFO L78 Accepts]: Start accepts. Automaton has 21931 states and 31155 transitions. Word has length 70 [2023-11-06 22:33:08,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:08,947 INFO L495 AbstractCegarLoop]: Abstraction has 21931 states and 31155 transitions. [2023-11-06 22:33:08,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:08,948 INFO L276 IsEmpty]: Start isEmpty. Operand 21931 states and 31155 transitions. [2023-11-06 22:33:08,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-06 22:33:08,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:08,953 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] [2023-11-06 22:33:08,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:33:08,953 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:33:08,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:08,954 INFO L85 PathProgramCache]: Analyzing trace with hash 892422404, now seen corresponding path program 1 times [2023-11-06 22:33:08,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:08,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403066438] [2023-11-06 22:33:08,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:08,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:09,097 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 22:33:09,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:09,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403066438] [2023-11-06 22:33:09,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403066438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:09,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:09,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:33:09,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437165182] [2023-11-06 22:33:09,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:09,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:33:09,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:09,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:33:09,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:33:09,100 INFO L87 Difference]: Start difference. First operand 21931 states and 31155 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:17,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:17,960 INFO L93 Difference]: Finished difference Result 31177 states and 44496 transitions. [2023-11-06 22:33:17,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:33:17,960 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-11-06 22:33:17,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:17,997 INFO L225 Difference]: With dead ends: 31177 [2023-11-06 22:33:17,997 INFO L226 Difference]: Without dead ends: 29747 [2023-11-06 22:33:18,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:33:18,004 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 1046 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:18,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 1102 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:33:18,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29747 states. [2023-11-06 22:33:24,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29747 to 23345. [2023-11-06 22:33:24,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23345 states, 23344 states have (on average 1.4209647018505827) internal successors, (33171), 23344 states have internal predecessors, (33171), 0 states have call successors, (0), 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 22:33:24,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23345 states to 23345 states and 33171 transitions. [2023-11-06 22:33:24,819 INFO L78 Accepts]: Start accepts. Automaton has 23345 states and 33171 transitions. Word has length 70 [2023-11-06 22:33:24,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:24,819 INFO L495 AbstractCegarLoop]: Abstraction has 23345 states and 33171 transitions. [2023-11-06 22:33:24,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:24,820 INFO L276 IsEmpty]: Start isEmpty. Operand 23345 states and 33171 transitions. [2023-11-06 22:33:24,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-06 22:33:24,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:24,824 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] [2023-11-06 22:33:24,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:33:24,825 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:33:24,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:24,825 INFO L85 PathProgramCache]: Analyzing trace with hash -350885741, now seen corresponding path program 1 times [2023-11-06 22:33:24,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:24,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715059416] [2023-11-06 22:33:24,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:24,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:24,941 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 22:33:24,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:24,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715059416] [2023-11-06 22:33:24,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715059416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:24,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:24,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:33:24,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064504313] [2023-11-06 22:33:24,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:24,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:33:24,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:24,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:33:24,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:33:24,943 INFO L87 Difference]: Start difference. First operand 23345 states and 33171 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:34,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:34,246 INFO L93 Difference]: Finished difference Result 34297 states and 48978 transitions. [2023-11-06 22:33:34,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:33:34,248 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-11-06 22:33:34,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:34,302 INFO L225 Difference]: With dead ends: 34297 [2023-11-06 22:33:34,302 INFO L226 Difference]: Without dead ends: 31123 [2023-11-06 22:33:34,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:33:34,313 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 960 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:34,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 1259 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:33:34,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31123 states. [2023-11-06 22:33:42,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31123 to 26498. [2023-11-06 22:33:42,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26498 states, 26497 states have (on average 1.4212929765633846) internal successors, (37660), 26497 states have internal predecessors, (37660), 0 states have call successors, (0), 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 22:33:42,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26498 states to 26498 states and 37660 transitions. [2023-11-06 22:33:42,843 INFO L78 Accepts]: Start accepts. Automaton has 26498 states and 37660 transitions. Word has length 70 [2023-11-06 22:33:42,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:33:42,844 INFO L495 AbstractCegarLoop]: Abstraction has 26498 states and 37660 transitions. [2023-11-06 22:33:42,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:42,844 INFO L276 IsEmpty]: Start isEmpty. Operand 26498 states and 37660 transitions. [2023-11-06 22:33:42,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-06 22:33:42,848 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:33:42,848 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] [2023-11-06 22:33:42,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:33:42,849 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:33:42,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:33:42,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2051708963, now seen corresponding path program 1 times [2023-11-06 22:33:42,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:33:42,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778411161] [2023-11-06 22:33:42,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:33:42,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:33:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:33:42,963 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 22:33:42,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:33:42,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778411161] [2023-11-06 22:33:42,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778411161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:33:42,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:33:42,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:33:42,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532236995] [2023-11-06 22:33:42,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:33:42,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:33:42,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:33:42,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:33:42,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:33:42,965 INFO L87 Difference]: Start difference. First operand 26498 states and 37660 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:33:54,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:33:54,797 INFO L93 Difference]: Finished difference Result 44844 states and 64124 transitions. [2023-11-06 22:33:54,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:33:54,797 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-11-06 22:33:54,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:33:54,854 INFO L225 Difference]: With dead ends: 44844 [2023-11-06 22:33:54,854 INFO L226 Difference]: Without dead ends: 37526 [2023-11-06 22:33:54,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:33:54,864 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 1032 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:33:54,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1032 Valid, 1241 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:33:54,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37526 states. [2023-11-06 22:34:05,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37526 to 32085. [2023-11-06 22:34:05,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32085 states, 32084 states have (on average 1.4217055230021194) internal successors, (45614), 32084 states have internal predecessors, (45614), 0 states have call successors, (0), 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 22:34:05,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32085 states to 32085 states and 45614 transitions. [2023-11-06 22:34:05,647 INFO L78 Accepts]: Start accepts. Automaton has 32085 states and 45614 transitions. Word has length 70 [2023-11-06 22:34:05,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:05,647 INFO L495 AbstractCegarLoop]: Abstraction has 32085 states and 45614 transitions. [2023-11-06 22:34:05,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:34:05,647 INFO L276 IsEmpty]: Start isEmpty. Operand 32085 states and 45614 transitions. [2023-11-06 22:34:05,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-06 22:34:05,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:05,652 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] [2023-11-06 22:34:05,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:34:05,653 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:34:05,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:05,653 INFO L85 PathProgramCache]: Analyzing trace with hash 301779653, now seen corresponding path program 1 times [2023-11-06 22:34:05,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:05,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967542581] [2023-11-06 22:34:05,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:05,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:05,709 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 22:34:05,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:05,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967542581] [2023-11-06 22:34:05,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967542581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:05,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:05,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:34:05,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371860468] [2023-11-06 22:34:05,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:05,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:34:05,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:05,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:34:05,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:34:05,712 INFO L87 Difference]: Start difference. First operand 32085 states and 45614 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 22:34:17,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:34:17,655 INFO L93 Difference]: Finished difference Result 64622 states and 91472 transitions. [2023-11-06 22:34:17,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:34:17,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2023-11-06 22:34:17,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:34:17,705 INFO L225 Difference]: With dead ends: 64622 [2023-11-06 22:34:17,705 INFO L226 Difference]: Without dead ends: 35034 [2023-11-06 22:34:17,722 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 22:34:17,722 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 149 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:34:17,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 521 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:34:17,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35034 states. [2023-11-06 22:34:29,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35034 to 32006. [2023-11-06 22:34:29,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32006 states, 32005 states have (on average 1.38340884236838) internal successors, (44276), 32005 states have internal predecessors, (44276), 0 states have call successors, (0), 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 22:34:29,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32006 states to 32006 states and 44276 transitions. [2023-11-06 22:34:29,577 INFO L78 Accepts]: Start accepts. Automaton has 32006 states and 44276 transitions. Word has length 73 [2023-11-06 22:34:29,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:34:29,578 INFO L495 AbstractCegarLoop]: Abstraction has 32006 states and 44276 transitions. [2023-11-06 22:34:29,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 22:34:29,578 INFO L276 IsEmpty]: Start isEmpty. Operand 32006 states and 44276 transitions. [2023-11-06 22:34:29,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-06 22:34:29,583 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:34:29,583 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] [2023-11-06 22:34:29,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:34:29,583 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:34:29,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:34:29,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1926215478, now seen corresponding path program 1 times [2023-11-06 22:34:29,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:34:29,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987248681] [2023-11-06 22:34:29,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:34:29,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:34:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:34:29,848 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 22:34:29,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:34:29,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987248681] [2023-11-06 22:34:29,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987248681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:34:29,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:34:29,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:34:29,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822040603] [2023-11-06 22:34:29,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:34:29,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:34:29,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:34:29,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:34:29,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:34:29,851 INFO L87 Difference]: Start difference. First operand 32006 states and 44276 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)