./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-66.i --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_d0c040ad-9ec8-4050-a849-778b88575239/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c040ad-9ec8-4050-a849-778b88575239/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_d0c040ad-9ec8-4050-a849-778b88575239/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c040ad-9ec8-4050-a849-778b88575239/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-66.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c040ad-9ec8-4050-a849-778b88575239/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_d0c040ad-9ec8-4050-a849-778b88575239/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 2463f96020283dc976a48e4624a0a64ed4b926874e2dafad9e507fb796d4e148 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:13:23,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:13:23,633 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c040ad-9ec8-4050-a849-778b88575239/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:13:23,644 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:13:23,645 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:13:23,694 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:13:23,695 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:13:23,695 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:13:23,697 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:13:23,702 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:13:23,704 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:13:23,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:13:23,705 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:13:23,707 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:13:23,708 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:13:23,709 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:13:23,709 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:13:23,710 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:13:23,710 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:13:23,711 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:13:23,711 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:13:23,712 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:13:23,713 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:13:23,713 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:13:23,714 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:13:23,715 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:13:23,716 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:13:23,716 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:13:23,717 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:13:23,718 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:13:23,719 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:13:23,719 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:13:23,720 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:13:23,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:13:23,721 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:13:23,721 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:13:23,721 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:13:23,722 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:13:23,722 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:13:23,722 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_d0c040ad-9ec8-4050-a849-778b88575239/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c040ad-9ec8-4050-a849-778b88575239/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2463f96020283dc976a48e4624a0a64ed4b926874e2dafad9e507fb796d4e148 [2023-11-06 22:13:24,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:13:24,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:13:24,099 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:13:24,101 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:13:24,101 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:13:24,103 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c040ad-9ec8-4050-a849-778b88575239/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-66.i [2023-11-06 22:13:27,248 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:13:27,528 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:13:27,529 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c040ad-9ec8-4050-a849-778b88575239/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-66.i [2023-11-06 22:13:27,542 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c040ad-9ec8-4050-a849-778b88575239/bin/uautomizer-verify-WvqO1wxjHP/data/934e7b5e1/3813092a3c9c410a8b016bdcb62b0e5a/FLAG14b7ae54d [2023-11-06 22:13:27,558 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c040ad-9ec8-4050-a849-778b88575239/bin/uautomizer-verify-WvqO1wxjHP/data/934e7b5e1/3813092a3c9c410a8b016bdcb62b0e5a [2023-11-06 22:13:27,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:13:27,563 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:13:27,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:13:27,565 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:13:27,571 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:13:27,572 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:27" (1/1) ... [2023-11-06 22:13:27,573 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9badc57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:27, skipping insertion in model container [2023-11-06 22:13:27,574 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:13:27" (1/1) ... [2023-11-06 22:13:27,622 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:13:27,822 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_d0c040ad-9ec8-4050-a849-778b88575239/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-66.i[913,926] [2023-11-06 22:13:27,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:13:27,891 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:13:27,911 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_d0c040ad-9ec8-4050-a849-778b88575239/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-66.i[913,926] [2023-11-06 22:13:27,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:13:27,998 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:13:27,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:27 WrapperNode [2023-11-06 22:13:27,998 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:13:27,999 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:13:28,000 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:13:28,000 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:13:28,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:27" (1/1) ... [2023-11-06 22:13:28,033 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:27" (1/1) ... [2023-11-06 22:13:28,087 INFO L138 Inliner]: procedures = 26, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 101 [2023-11-06 22:13:28,089 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:13:28,090 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:13:28,091 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:13:28,092 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:13:28,102 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:27" (1/1) ... [2023-11-06 22:13:28,102 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:27" (1/1) ... [2023-11-06 22:13:28,106 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:27" (1/1) ... [2023-11-06 22:13:28,107 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:27" (1/1) ... [2023-11-06 22:13:28,126 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:27" (1/1) ... [2023-11-06 22:13:28,133 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:27" (1/1) ... [2023-11-06 22:13:28,136 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:27" (1/1) ... [2023-11-06 22:13:28,143 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:27" (1/1) ... [2023-11-06 22:13:28,148 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:13:28,151 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:13:28,152 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:13:28,152 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:13:28,153 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:27" (1/1) ... [2023-11-06 22:13:28,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:13:28,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c040ad-9ec8-4050-a849-778b88575239/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:13:28,196 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c040ad-9ec8-4050-a849-778b88575239/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:13:28,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c040ad-9ec8-4050-a849-778b88575239/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:13:28,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:13:28,247 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:13:28,248 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:13:28,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:13:28,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:13:28,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:13:28,359 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:13:28,361 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:13:28,696 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:13:28,707 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:13:28,713 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:13:28,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:28 BoogieIcfgContainer [2023-11-06 22:13:28,715 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:13:28,718 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:13:28,719 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:13:28,722 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:13:28,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:13:27" (1/3) ... [2023-11-06 22:13:28,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243d8915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:28, skipping insertion in model container [2023-11-06 22:13:28,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:13:27" (2/3) ... [2023-11-06 22:13:28,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243d8915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:13:28, skipping insertion in model container [2023-11-06 22:13:28,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:13:28" (3/3) ... [2023-11-06 22:13:28,728 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_normal_file-66.i [2023-11-06 22:13:28,751 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:13:28,751 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:13:28,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:13:28,805 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;@306a9702, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:13:28,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:13:28,809 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 29 states have internal predecessors, (38), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-06 22:13:28,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-06 22:13:28,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:28,821 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:13:28,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:28,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:28,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1691062779, now seen corresponding path program 1 times [2023-11-06 22:13:28,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:28,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101379793] [2023-11-06 22:13:28,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:28,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:29,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:13:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:29,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:29,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:13:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:29,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:13:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:29,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:13:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:29,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:13:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:29,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 22:13:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:29,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:13:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:29,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 22:13:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:29,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:13:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:29,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 22:13:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:29,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:13:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:29,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 22:13:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:29,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 22:13:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:29,379 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-06 22:13:29,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:29,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101379793] [2023-11-06 22:13:29,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101379793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:29,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:29,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:13:29,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330036135] [2023-11-06 22:13:29,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:29,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:13:29,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:29,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:13:29,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:13:29,425 INFO L87 Difference]: Start difference. First operand has 45 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 29 states have internal predecessors, (38), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:13:29,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:29,466 INFO L93 Difference]: Finished difference Result 83 states and 140 transitions. [2023-11-06 22:13:29,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:13:29,469 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 89 [2023-11-06 22:13:29,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:29,479 INFO L225 Difference]: With dead ends: 83 [2023-11-06 22:13:29,479 INFO L226 Difference]: Without dead ends: 41 [2023-11-06 22:13:29,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:13:29,494 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:29,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:13:29,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-11-06 22:13:29,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-11-06 22:13:29,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-06 22:13:29,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 59 transitions. [2023-11-06 22:13:29,558 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 59 transitions. Word has length 89 [2023-11-06 22:13:29,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:29,560 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 59 transitions. [2023-11-06 22:13:29,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:13:29,562 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 59 transitions. [2023-11-06 22:13:29,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-06 22:13:29,570 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:29,570 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:13:29,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:13:29,571 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:29,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:29,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1552521403, now seen corresponding path program 1 times [2023-11-06 22:13:29,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:29,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704572460] [2023-11-06 22:13:29,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:29,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:30,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:13:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:30,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:30,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:13:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:30,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:13:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:30,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:13:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:30,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:13:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:30,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 22:13:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:30,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:13:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:30,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 22:13:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:30,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:13:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:30,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 22:13:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:30,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:13:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:30,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 22:13:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:30,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 22:13:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-06 22:13:30,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:30,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704572460] [2023-11-06 22:13:30,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704572460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:30,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:30,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:13:30,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14086827] [2023-11-06 22:13:30,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:30,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:13:30,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:30,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:13:30,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:13:30,281 INFO L87 Difference]: Start difference. First operand 41 states and 59 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:13:30,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:30,379 INFO L93 Difference]: Finished difference Result 117 states and 171 transitions. [2023-11-06 22:13:30,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:13:30,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 89 [2023-11-06 22:13:30,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:30,388 INFO L225 Difference]: With dead ends: 117 [2023-11-06 22:13:30,388 INFO L226 Difference]: Without dead ends: 79 [2023-11-06 22:13:30,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 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 22:13:30,398 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 27 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:30,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 101 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:13:30,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-06 22:13:30,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2023-11-06 22:13:30,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 45 states have (on average 1.2) internal successors, (54), 45 states have internal predecessors, (54), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-06 22:13:30,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 110 transitions. [2023-11-06 22:13:30,445 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 110 transitions. Word has length 89 [2023-11-06 22:13:30,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:30,448 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 110 transitions. [2023-11-06 22:13:30,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:13:30,449 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 110 transitions. [2023-11-06 22:13:30,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-06 22:13:30,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:30,457 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:13:30,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:13:30,458 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:30,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:30,458 INFO L85 PathProgramCache]: Analyzing trace with hash -828174430, now seen corresponding path program 1 times [2023-11-06 22:13:30,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:30,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325614217] [2023-11-06 22:13:30,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:30,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:31,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:13:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:31,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:31,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:31,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:13:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:31,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:13:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:31,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:13:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:31,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:13:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:31,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 22:13:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:31,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:13:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:31,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 22:13:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:31,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:13:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:31,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 22:13:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:31,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:13:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:31,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 22:13:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:31,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 22:13:31,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-06 22:13:31,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:31,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325614217] [2023-11-06 22:13:31,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325614217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:31,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:31,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:13:31,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465624771] [2023-11-06 22:13:31,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:31,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:13:31,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:31,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:13:31,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:13:31,232 INFO L87 Difference]: Start difference. First operand 76 states and 110 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:13:31,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:31,487 INFO L93 Difference]: Finished difference Result 196 states and 284 transitions. [2023-11-06 22:13:31,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:13:31,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 90 [2023-11-06 22:13:31,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:31,492 INFO L225 Difference]: With dead ends: 196 [2023-11-06 22:13:31,492 INFO L226 Difference]: Without dead ends: 123 [2023-11-06 22:13:31,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:13:31,496 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 57 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:31,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 225 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:13:31,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-06 22:13:31,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 111. [2023-11-06 22:13:31,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 65 states have (on average 1.2) internal successors, (78), 65 states have internal predecessors, (78), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-06 22:13:31,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 162 transitions. [2023-11-06 22:13:31,552 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 162 transitions. Word has length 90 [2023-11-06 22:13:31,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:31,553 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 162 transitions. [2023-11-06 22:13:31,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:13:31,554 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 162 transitions. [2023-11-06 22:13:31,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-06 22:13:31,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:31,557 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:13:31,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:13:31,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:31,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:31,559 INFO L85 PathProgramCache]: Analyzing trace with hash -830021472, now seen corresponding path program 1 times [2023-11-06 22:13:31,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:31,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345036138] [2023-11-06 22:13:31,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:31,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:37,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:13:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:37,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:37,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:13:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:38,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:13:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:38,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:13:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:38,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:13:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:38,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 22:13:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:38,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:13:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:38,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 22:13:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:38,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:13:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:38,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 22:13:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:38,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:13:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:38,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 22:13:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:38,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 22:13:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-06 22:13:38,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:38,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345036138] [2023-11-06 22:13:38,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345036138] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:38,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:38,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:13:38,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378705801] [2023-11-06 22:13:38,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:38,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:13:38,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:38,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:13:38,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:13:38,136 INFO L87 Difference]: Start difference. First operand 111 states and 162 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:13:39,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:39,150 INFO L93 Difference]: Finished difference Result 150 states and 221 transitions. [2023-11-06 22:13:39,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:13:39,153 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 90 [2023-11-06 22:13:39,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:39,156 INFO L225 Difference]: With dead ends: 150 [2023-11-06 22:13:39,156 INFO L226 Difference]: Without dead ends: 148 [2023-11-06 22:13:39,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:13:39,158 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 74 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:39,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 462 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:13:39,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-06 22:13:39,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 114. [2023-11-06 22:13:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 68 states have internal predecessors, (81), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-06 22:13:39,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 165 transitions. [2023-11-06 22:13:39,194 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 165 transitions. Word has length 90 [2023-11-06 22:13:39,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:39,194 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 165 transitions. [2023-11-06 22:13:39,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:13:39,195 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 165 transitions. [2023-11-06 22:13:39,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-06 22:13:39,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:39,197 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:13:39,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:13:39,197 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:39,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:39,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1518851614, now seen corresponding path program 1 times [2023-11-06 22:13:39,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:39,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189357274] [2023-11-06 22:13:39,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:39,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:39,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:42,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:13:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:42,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:42,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:13:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:42,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:13:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:42,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:13:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:42,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:13:42,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:42,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 22:13:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:42,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:13:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:42,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 22:13:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:42,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:13:42,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:42,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 22:13:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:42,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:13:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:42,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 22:13:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:42,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 22:13:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:42,085 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-06 22:13:42,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:42,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189357274] [2023-11-06 22:13:42,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189357274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:42,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:42,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:13:42,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497578004] [2023-11-06 22:13:42,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:42,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:13:42,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:42,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:13:42,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:13:42,090 INFO L87 Difference]: Start difference. First operand 114 states and 165 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:13:43,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:43,226 INFO L93 Difference]: Finished difference Result 186 states and 267 transitions. [2023-11-06 22:13:43,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:13:43,227 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 90 [2023-11-06 22:13:43,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:43,231 INFO L225 Difference]: With dead ends: 186 [2023-11-06 22:13:43,231 INFO L226 Difference]: Without dead ends: 184 [2023-11-06 22:13:43,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:13:43,236 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 122 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:43,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 503 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:13:43,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-06 22:13:43,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 122. [2023-11-06 22:13:43,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 76 states have (on average 1.236842105263158) internal successors, (94), 76 states have internal predecessors, (94), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-06 22:13:43,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 178 transitions. [2023-11-06 22:13:43,302 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 178 transitions. Word has length 90 [2023-11-06 22:13:43,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:43,303 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 178 transitions. [2023-11-06 22:13:43,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:13:43,303 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 178 transitions. [2023-11-06 22:13:43,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-06 22:13:43,305 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:43,305 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:13:43,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:13:43,306 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:43,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:43,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1461593312, now seen corresponding path program 1 times [2023-11-06 22:13:43,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:43,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724858838] [2023-11-06 22:13:43,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:43,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:43,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:13:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:43,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:43,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:13:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:43,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:13:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:43,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:13:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:43,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:13:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:43,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 22:13:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:43,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:13:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:43,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 22:13:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:43,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:13:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:43,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 22:13:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:43,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:13:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:43,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 22:13:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:43,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 22:13:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:43,636 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-06 22:13:43,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:43,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724858838] [2023-11-06 22:13:43,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724858838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:43,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:43,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:13:43,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428155259] [2023-11-06 22:13:43,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:43,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:13:43,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:43,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:13:43,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:13:43,640 INFO L87 Difference]: Start difference. First operand 122 states and 178 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:13:43,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:43,745 INFO L93 Difference]: Finished difference Result 199 states and 279 transitions. [2023-11-06 22:13:43,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:13:43,746 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 90 [2023-11-06 22:13:43,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:43,749 INFO L225 Difference]: With dead ends: 199 [2023-11-06 22:13:43,749 INFO L226 Difference]: Without dead ends: 159 [2023-11-06 22:13:43,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 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 22:13:43,751 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 65 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:43,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 110 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:13:43,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-06 22:13:43,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 135. [2023-11-06 22:13:43,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 86 states have (on average 1.186046511627907) internal successors, (102), 86 states have internal predecessors, (102), 42 states have call successors, (42), 6 states have call predecessors, (42), 6 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-06 22:13:43,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 186 transitions. [2023-11-06 22:13:43,800 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 186 transitions. Word has length 90 [2023-11-06 22:13:43,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:43,802 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 186 transitions. [2023-11-06 22:13:43,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:13:43,802 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 186 transitions. [2023-11-06 22:13:43,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-06 22:13:43,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:43,803 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:13:43,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:13:43,804 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:43,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:43,804 INFO L85 PathProgramCache]: Analyzing trace with hash 256155748, now seen corresponding path program 1 times [2023-11-06 22:13:43,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:43,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905703110] [2023-11-06 22:13:43,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:43,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:43,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:47,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:13:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:47,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:47,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:13:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:47,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:13:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:47,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:13:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:47,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:13:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:47,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 22:13:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:47,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:13:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:47,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 22:13:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:47,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:13:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:47,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 22:13:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:47,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:13:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:47,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 22:13:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:47,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 22:13:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-06 22:13:47,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:47,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905703110] [2023-11-06 22:13:47,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905703110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:47,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:47,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:13:47,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843418862] [2023-11-06 22:13:47,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:47,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:13:47,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:47,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:13:47,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:13:47,378 INFO L87 Difference]: Start difference. First operand 135 states and 186 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:13:48,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:48,833 INFO L93 Difference]: Finished difference Result 203 states and 279 transitions. [2023-11-06 22:13:48,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:13:48,834 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 90 [2023-11-06 22:13:48,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:48,836 INFO L225 Difference]: With dead ends: 203 [2023-11-06 22:13:48,837 INFO L226 Difference]: Without dead ends: 201 [2023-11-06 22:13:48,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:13:48,840 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 98 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:48,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 577 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:13:48,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-11-06 22:13:48,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 136. [2023-11-06 22:13:48,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 87 states have (on average 1.1954022988505748) internal successors, (104), 87 states have internal predecessors, (104), 42 states have call successors, (42), 6 states have call predecessors, (42), 6 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-06 22:13:48,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 188 transitions. [2023-11-06 22:13:48,900 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 188 transitions. Word has length 90 [2023-11-06 22:13:48,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:48,901 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 188 transitions. [2023-11-06 22:13:48,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:13:48,902 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 188 transitions. [2023-11-06 22:13:48,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-06 22:13:48,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:48,903 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:13:48,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:13:48,904 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:48,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:48,904 INFO L85 PathProgramCache]: Analyzing trace with hash 313414050, now seen corresponding path program 1 times [2023-11-06 22:13:48,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:48,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063688663] [2023-11-06 22:13:48,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:48,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:54,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:13:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:54,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:13:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:54,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:13:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:54,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:13:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:54,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:13:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:54,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:13:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:54,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 22:13:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:54,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:13:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:54,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 22:13:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:54,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:13:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:54,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 22:13:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:54,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:13:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:54,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 22:13:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:54,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 22:13:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:13:54,640 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-06 22:13:54,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:13:54,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063688663] [2023-11-06 22:13:54,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063688663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:13:54,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:13:54,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-06 22:13:54,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982859115] [2023-11-06 22:13:54,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:13:54,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:13:54,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:13:54,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:13:54,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:13:54,644 INFO L87 Difference]: Start difference. First operand 136 states and 188 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:13:56,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:13:56,276 INFO L93 Difference]: Finished difference Result 197 states and 272 transitions. [2023-11-06 22:13:56,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 22:13:56,277 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 90 [2023-11-06 22:13:56,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:13:56,279 INFO L225 Difference]: With dead ends: 197 [2023-11-06 22:13:56,279 INFO L226 Difference]: Without dead ends: 195 [2023-11-06 22:13:56,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:13:56,281 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 116 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:13:56,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 431 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:13:56,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-06 22:13:56,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 135. [2023-11-06 22:13:56,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 86 states have (on average 1.186046511627907) internal successors, (102), 86 states have internal predecessors, (102), 42 states have call successors, (42), 6 states have call predecessors, (42), 6 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-06 22:13:56,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 186 transitions. [2023-11-06 22:13:56,319 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 186 transitions. Word has length 90 [2023-11-06 22:13:56,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:13:56,319 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 186 transitions. [2023-11-06 22:13:56,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:13:56,320 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 186 transitions. [2023-11-06 22:13:56,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-06 22:13:56,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:13:56,321 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:13:56,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:13:56,322 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:13:56,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:13:56,322 INFO L85 PathProgramCache]: Analyzing trace with hash 213741987, now seen corresponding path program 1 times [2023-11-06 22:13:56,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:13:56,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454137771] [2023-11-06 22:13:56,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:13:56,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:13:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:01,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:14:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:01,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:14:01,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:01,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:14:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:01,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:14:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:01,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:14:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:01,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:14:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:01,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 22:14:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:01,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:14:01,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:01,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 22:14:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:01,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:14:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:01,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 22:14:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:01,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:14:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:01,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 22:14:01,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:01,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 22:14:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-06 22:14:01,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:01,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454137771] [2023-11-06 22:14:01,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454137771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:01,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:01,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-06 22:14:01,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085100263] [2023-11-06 22:14:01,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:01,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:14:01,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:01,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:14:01,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:14:01,675 INFO L87 Difference]: Start difference. First operand 135 states and 186 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:14:03,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:03,626 INFO L93 Difference]: Finished difference Result 190 states and 263 transitions. [2023-11-06 22:14:03,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:14:03,627 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 91 [2023-11-06 22:14:03,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:03,629 INFO L225 Difference]: With dead ends: 190 [2023-11-06 22:14:03,629 INFO L226 Difference]: Without dead ends: 188 [2023-11-06 22:14:03,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:14:03,631 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 123 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:03,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 439 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:14:03,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-06 22:14:03,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 139. [2023-11-06 22:14:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 90 states have (on average 1.211111111111111) internal successors, (109), 90 states have internal predecessors, (109), 42 states have call successors, (42), 6 states have call predecessors, (42), 6 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-06 22:14:03,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 193 transitions. [2023-11-06 22:14:03,666 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 193 transitions. Word has length 91 [2023-11-06 22:14:03,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:03,666 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 193 transitions. [2023-11-06 22:14:03,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:14:03,667 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 193 transitions. [2023-11-06 22:14:03,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-06 22:14:03,668 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:03,668 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:14:03,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:14:03,669 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:03,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:03,669 INFO L85 PathProgramCache]: Analyzing trace with hash -595604639, now seen corresponding path program 1 times [2023-11-06 22:14:03,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:03,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069783386] [2023-11-06 22:14:03,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:03,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:09,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:14:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:09,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:14:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:09,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:14:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:09,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:14:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:09,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:14:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:09,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:14:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:09,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 22:14:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:09,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:14:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:09,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 22:14:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:09,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:14:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:09,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 22:14:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:09,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:14:09,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:09,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 22:14:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:09,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 22:14:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-06 22:14:09,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:09,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069783386] [2023-11-06 22:14:09,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069783386] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:09,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:09,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 22:14:09,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247109612] [2023-11-06 22:14:09,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:09,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:14:09,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:09,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:14:09,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:14:09,093 INFO L87 Difference]: Start difference. First operand 139 states and 193 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:14:11,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:11,183 INFO L93 Difference]: Finished difference Result 199 states and 273 transitions. [2023-11-06 22:14:11,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-06 22:14:11,190 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 91 [2023-11-06 22:14:11,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:11,194 INFO L225 Difference]: With dead ends: 199 [2023-11-06 22:14:11,194 INFO L226 Difference]: Without dead ends: 197 [2023-11-06 22:14:11,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:14:11,196 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 115 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:11,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 534 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:14:11,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-06 22:14:11,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 139. [2023-11-06 22:14:11,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 90 states have (on average 1.211111111111111) internal successors, (109), 90 states have internal predecessors, (109), 42 states have call successors, (42), 6 states have call predecessors, (42), 6 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-06 22:14:11,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 193 transitions. [2023-11-06 22:14:11,233 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 193 transitions. Word has length 91 [2023-11-06 22:14:11,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:11,234 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 193 transitions. [2023-11-06 22:14:11,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-06 22:14:11,234 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 193 transitions. [2023-11-06 22:14:11,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-06 22:14:11,235 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:11,236 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:14:11,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:14:11,236 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:11,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:11,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1179402723, now seen corresponding path program 1 times [2023-11-06 22:14:11,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:11,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045004654] [2023-11-06 22:14:11,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:11,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:20,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:14:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:20,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:14:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:20,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:14:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:20,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:14:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:20,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:14:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:20,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:14:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:20,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 22:14:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:20,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:14:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:20,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 22:14:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:20,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:14:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:20,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 22:14:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:20,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:14:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:20,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 22:14:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:20,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 22:14:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2023-11-06 22:14:20,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:20,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045004654] [2023-11-06 22:14:20,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045004654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:14:20,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:14:20,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 22:14:20,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495256682] [2023-11-06 22:14:20,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:14:20,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:14:20,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:20,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:14:20,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:14:20,603 INFO L87 Difference]: Start difference. First operand 139 states and 193 transitions. Second operand has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:14:22,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:22,276 INFO L93 Difference]: Finished difference Result 240 states and 334 transitions. [2023-11-06 22:14:22,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:14:22,277 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 91 [2023-11-06 22:14:22,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:22,282 INFO L225 Difference]: With dead ends: 240 [2023-11-06 22:14:22,282 INFO L226 Difference]: Without dead ends: 197 [2023-11-06 22:14:22,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:14:22,284 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 120 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:22,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 546 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:14:22,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-11-06 22:14:22,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 138. [2023-11-06 22:14:22,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 89 states have (on average 1.202247191011236) internal successors, (107), 89 states have internal predecessors, (107), 42 states have call successors, (42), 6 states have call predecessors, (42), 6 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2023-11-06 22:14:22,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 191 transitions. [2023-11-06 22:14:22,323 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 191 transitions. Word has length 91 [2023-11-06 22:14:22,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:22,323 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 191 transitions. [2023-11-06 22:14:22,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-06 22:14:22,324 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 191 transitions. [2023-11-06 22:14:22,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-06 22:14:22,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:22,326 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:22,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:14:22,327 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:22,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:22,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1608673369, now seen corresponding path program 1 times [2023-11-06 22:14:22,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:22,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217876587] [2023-11-06 22:14:22,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:22,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:14:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:14:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:14:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:14:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:14:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:14:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 22:14:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:14:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 22:14:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:14:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 22:14:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:14:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 22:14:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 22:14:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-06 22:14:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-06 22:14:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-06 22:14:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-06 22:14:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-06 22:14:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-06 22:14:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-06 22:14:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-06 22:14:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-06 22:14:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-06 22:14:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-06 22:14:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-06 22:14:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-06 22:14:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-06 22:14:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-06 22:14:27,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:27,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217876587] [2023-11-06 22:14:27,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217876587] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:14:27,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302119708] [2023-11-06 22:14:27,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:27,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:14:27,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c040ad-9ec8-4050-a849-778b88575239/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:14:27,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c040ad-9ec8-4050-a849-778b88575239/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:14:27,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c040ad-9ec8-4050-a849-778b88575239/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:14:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:27,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:14:27,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:14:28,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 915 proven. 33 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2023-11-06 22:14:28,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:14:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 32 proven. 75 refuted. 0 times theorem prover too weak. 1434 trivial. 0 not checked. [2023-11-06 22:14:28,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302119708] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:14:28,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:14:28,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 16 [2023-11-06 22:14:28,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78070314] [2023-11-06 22:14:28,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:14:28,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:14:28,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:14:28,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:14:28,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:14:28,484 INFO L87 Difference]: Start difference. First operand 138 states and 191 transitions. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 6 states have call successors, (78), 3 states have call predecessors, (78), 5 states have return successors, (80), 6 states have call predecessors, (80), 6 states have call successors, (80) [2023-11-06 22:14:34,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:14:34,532 INFO L93 Difference]: Finished difference Result 413 states and 558 transitions. [2023-11-06 22:14:34,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-06 22:14:34,533 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 6 states have call successors, (78), 3 states have call predecessors, (78), 5 states have return successors, (80), 6 states have call predecessors, (80), 6 states have call successors, (80) Word has length 176 [2023-11-06 22:14:34,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:14:34,536 INFO L225 Difference]: With dead ends: 413 [2023-11-06 22:14:34,537 INFO L226 Difference]: Without dead ends: 367 [2023-11-06 22:14:34,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=745, Invalid=3287, Unknown=0, NotChecked=0, Total=4032 [2023-11-06 22:14:34,540 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 252 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:14:34,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 497 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-06 22:14:34,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2023-11-06 22:14:34,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 210. [2023-11-06 22:14:34,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 138 states have (on average 1.1376811594202898) internal successors, (157), 138 states have internal predecessors, (157), 56 states have call successors, (56), 15 states have call predecessors, (56), 15 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-06 22:14:34,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 269 transitions. [2023-11-06 22:14:34,615 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 269 transitions. Word has length 176 [2023-11-06 22:14:34,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:14:34,615 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 269 transitions. [2023-11-06 22:14:34,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 16 states have internal predecessors, (88), 6 states have call successors, (78), 3 states have call predecessors, (78), 5 states have return successors, (80), 6 states have call predecessors, (80), 6 states have call successors, (80) [2023-11-06 22:14:34,616 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 269 transitions. [2023-11-06 22:14:34,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-06 22:14:34,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:14:34,619 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:14:34,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c040ad-9ec8-4050-a849-778b88575239/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:14:34,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c040ad-9ec8-4050-a849-778b88575239/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:14:34,826 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:14:34,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:14:34,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1258465279, now seen corresponding path program 1 times [2023-11-06 22:14:34,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:14:34,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638327626] [2023-11-06 22:14:34,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:34,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:14:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:14:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 22:14:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:14:39,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-06 22:14:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 22:14:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:14:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 22:14:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 22:14:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-06 22:14:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 22:14:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-06 22:14:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-06 22:14:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-06 22:14:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-06 22:14:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-06 22:14:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-06 22:14:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-06 22:14:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-06 22:14:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-06 22:14:39,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-06 22:14:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-06 22:14:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-06 22:14:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-06 22:14:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-06 22:14:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-06 22:14:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-06 22:14:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-06 22:14:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-06 22:14:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1542 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked. [2023-11-06 22:14:39,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:14:39,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638327626] [2023-11-06 22:14:39,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638327626] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:14:39,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123744124] [2023-11-06 22:14:39,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:14:39,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:14:39,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c040ad-9ec8-4050-a849-778b88575239/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:14:39,358 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c040ad-9ec8-4050-a849-778b88575239/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:14:39,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0c040ad-9ec8-4050-a849-778b88575239/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:14:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:14:39,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-06 22:14:39,550 INFO L285 TraceCheckSpWp]: Computing forward predicates...