./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/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_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/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 64bit --witnessprinter.graph.data.programhash 4c7460e797ab98c965c0146dc16cfd1742d13d580f8dc4b4e90e3d1aa36d777a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:40:25,596 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:40:25,682 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 22:40:25,689 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:40:25,689 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:40:25,722 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:40:25,723 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:40:25,724 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:40:25,725 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:40:25,726 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:40:25,727 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:40:25,728 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:40:25,729 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:40:25,729 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:40:25,730 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:40:25,731 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:40:25,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:40:25,732 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:40:25,733 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:40:25,734 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:40:25,734 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:40:25,735 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:40:25,736 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:40:25,736 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:40:25,737 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:40:25,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:40:25,738 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:40:25,739 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:40:25,740 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:40:25,740 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:40:25,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:40:25,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:40:25,742 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:40:25,743 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:40:25,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:40:25,744 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:40:25,744 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_9ac4d482-5de7-4aba-ae5a-394b620436bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c7460e797ab98c965c0146dc16cfd1742d13d580f8dc4b4e90e3d1aa36d777a [2023-11-06 22:40:26,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:40:26,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:40:26,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:40:26,140 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:40:26,141 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:40:26,142 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c [2023-11-06 22:40:29,961 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:40:30,243 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:40:30,243 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c [2023-11-06 22:40:30,256 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/data/8786a2883/3f0cc1d4acf14dceaf3500b435b3ea0c/FLAG50001e53b [2023-11-06 22:40:30,273 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/data/8786a2883/3f0cc1d4acf14dceaf3500b435b3ea0c [2023-11-06 22:40:30,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:40:30,278 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:40:30,280 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:40:30,281 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:40:30,287 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:40:30,288 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:40:30" (1/1) ... [2023-11-06 22:40:30,290 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7669db1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:30, skipping insertion in model container [2023-11-06 22:40:30,290 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:40:30" (1/1) ... [2023-11-06 22:40:30,330 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:40:30,512 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_9ac4d482-5de7-4aba-ae5a-394b620436bb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c[1253,1266] [2023-11-06 22:40:30,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:40:30,678 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:40:30,695 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_9ac4d482-5de7-4aba-ae5a-394b620436bb/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.sw_ball2004_1.c[1253,1266] [2023-11-06 22:40:30,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:40:30,791 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:40:30,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:30 WrapperNode [2023-11-06 22:40:30,792 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:40:30,793 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:40:30,793 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:40:30,793 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:40:30,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:30" (1/1) ... [2023-11-06 22:40:30,828 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:30" (1/1) ... [2023-11-06 22:40:30,946 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 745 [2023-11-06 22:40:30,946 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:40:30,947 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:40:30,947 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:40:30,947 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:40:30,959 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:30" (1/1) ... [2023-11-06 22:40:30,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:30" (1/1) ... [2023-11-06 22:40:31,002 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:30" (1/1) ... [2023-11-06 22:40:31,004 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:30" (1/1) ... [2023-11-06 22:40:31,073 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:30" (1/1) ... [2023-11-06 22:40:31,083 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:30" (1/1) ... [2023-11-06 22:40:31,104 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:30" (1/1) ... [2023-11-06 22:40:31,123 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:30" (1/1) ... [2023-11-06 22:40:31,147 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:40:31,148 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:40:31,149 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:40:31,149 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:40:31,150 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:30" (1/1) ... [2023-11-06 22:40:31,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:40:31,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:40:31,199 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:40:31,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:40:31,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:40:31,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:40:31,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:40:31,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:40:31,473 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:40:31,477 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:40:32,694 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:40:32,707 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:40:32,708 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:40:32,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:32 BoogieIcfgContainer [2023-11-06 22:40:32,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:40:32,718 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:40:32,718 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:40:32,723 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:40:32,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:40:30" (1/3) ... [2023-11-06 22:40:32,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5600f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:40:32, skipping insertion in model container [2023-11-06 22:40:32,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:30" (2/3) ... [2023-11-06 22:40:32,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5600f13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:40:32, skipping insertion in model container [2023-11-06 22:40:32,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:32" (3/3) ... [2023-11-06 22:40:32,730 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.sw_ball2004_1.c [2023-11-06 22:40:32,753 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:40:32,754 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:40:32,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:40:32,849 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;@261a3b2d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:40:32,849 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:40:32,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 147 states have (on average 1.653061224489796) internal successors, (243), 148 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:32,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-06 22:40:32,867 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:32,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:32,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:32,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:32,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1884606646, now seen corresponding path program 1 times [2023-11-06 22:40:32,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:32,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993895350] [2023-11-06 22:40:32,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:32,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:33,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:33,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:33,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993895350] [2023-11-06 22:40:33,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993895350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:33,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:33,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:40:33,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14733146] [2023-11-06 22:40:33,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:33,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:40:33,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:33,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:40:33,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:40:33,664 INFO L87 Difference]: Start difference. First operand has 149 states, 147 states have (on average 1.653061224489796) internal successors, (243), 148 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:33,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:33,770 INFO L93 Difference]: Finished difference Result 267 states and 439 transitions. [2023-11-06 22:40:33,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:40:33,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-06 22:40:33,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:33,790 INFO L225 Difference]: With dead ends: 267 [2023-11-06 22:40:33,791 INFO L226 Difference]: Without dead ends: 147 [2023-11-06 22:40:33,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:40:33,801 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 1 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:33,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 699 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:40:33,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-06 22:40:33,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-11-06 22:40:33,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.6369863013698631) internal successors, (239), 146 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:33,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 239 transitions. [2023-11-06 22:40:33,883 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 239 transitions. Word has length 27 [2023-11-06 22:40:33,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:33,885 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 239 transitions. [2023-11-06 22:40:33,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:33,886 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 239 transitions. [2023-11-06 22:40:33,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-06 22:40:33,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:33,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:33,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:40:33,890 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:33,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:33,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1705011038, now seen corresponding path program 1 times [2023-11-06 22:40:33,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:33,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775623844] [2023-11-06 22:40:33,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:33,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:34,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:34,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775623844] [2023-11-06 22:40:34,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775623844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:34,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:34,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:40:34,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429907156] [2023-11-06 22:40:34,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:34,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:40:34,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:34,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:40:34,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:40:34,119 INFO L87 Difference]: Start difference. First operand 147 states and 239 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:34,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:34,185 INFO L93 Difference]: Finished difference Result 268 states and 435 transitions. [2023-11-06 22:40:34,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:40:34,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-11-06 22:40:34,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:34,193 INFO L225 Difference]: With dead ends: 268 [2023-11-06 22:40:34,193 INFO L226 Difference]: Without dead ends: 150 [2023-11-06 22:40:34,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:40:34,196 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 1 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:34,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 696 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:40:34,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-06 22:40:34,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2023-11-06 22:40:34,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.6283783783783783) internal successors, (241), 148 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:34,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 241 transitions. [2023-11-06 22:40:34,221 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 241 transitions. Word has length 28 [2023-11-06 22:40:34,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:34,222 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 241 transitions. [2023-11-06 22:40:34,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:34,223 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 241 transitions. [2023-11-06 22:40:34,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-06 22:40:34,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:34,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:34,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:40:34,226 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:34,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:34,232 INFO L85 PathProgramCache]: Analyzing trace with hash 248840402, now seen corresponding path program 1 times [2023-11-06 22:40:34,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:34,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96527252] [2023-11-06 22:40:34,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:34,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:34,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:34,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:34,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96527252] [2023-11-06 22:40:34,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96527252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:34,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:34,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:40:34,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122794240] [2023-11-06 22:40:34,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:34,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:40:34,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:34,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:40:34,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:40:34,508 INFO L87 Difference]: Start difference. First operand 149 states and 241 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:34,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:34,631 INFO L93 Difference]: Finished difference Result 382 states and 619 transitions. [2023-11-06 22:40:34,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:40:34,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-06 22:40:34,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:34,638 INFO L225 Difference]: With dead ends: 382 [2023-11-06 22:40:34,639 INFO L226 Difference]: Without dead ends: 262 [2023-11-06 22:40:34,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:40:34,652 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 763 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:34,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 683 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:40:34,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-11-06 22:40:34,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 151. [2023-11-06 22:40:34,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.62) internal successors, (243), 150 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:34,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 243 transitions. [2023-11-06 22:40:34,676 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 243 transitions. Word has length 29 [2023-11-06 22:40:34,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:34,677 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 243 transitions. [2023-11-06 22:40:34,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:34,682 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 243 transitions. [2023-11-06 22:40:34,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-06 22:40:34,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:34,696 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:34,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:40:34,698 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:34,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:34,703 INFO L85 PathProgramCache]: Analyzing trace with hash 636828533, now seen corresponding path program 1 times [2023-11-06 22:40:34,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:34,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118481037] [2023-11-06 22:40:34,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:34,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:35,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:35,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:35,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118481037] [2023-11-06 22:40:35,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118481037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:35,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:35,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:40:35,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256424676] [2023-11-06 22:40:35,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:35,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:40:35,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:35,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:40:35,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:40:35,999 INFO L87 Difference]: Start difference. First operand 151 states and 243 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:36,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:36,136 INFO L93 Difference]: Finished difference Result 408 states and 656 transitions. [2023-11-06 22:40:36,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:40:36,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-11-06 22:40:36,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:36,140 INFO L225 Difference]: With dead ends: 408 [2023-11-06 22:40:36,140 INFO L226 Difference]: Without dead ends: 288 [2023-11-06 22:40:36,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:40:36,153 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 785 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:36,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 706 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:40:36,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-06 22:40:36,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 170. [2023-11-06 22:40:36,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.5976331360946745) internal successors, (270), 169 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:36,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 270 transitions. [2023-11-06 22:40:36,178 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 270 transitions. Word has length 106 [2023-11-06 22:40:36,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:36,180 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 270 transitions. [2023-11-06 22:40:36,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:36,180 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 270 transitions. [2023-11-06 22:40:36,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-06 22:40:36,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:36,185 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:36,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:40:36,186 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:36,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:36,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1610140413, now seen corresponding path program 1 times [2023-11-06 22:40:36,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:36,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102499071] [2023-11-06 22:40:36,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:36,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:37,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:37,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:37,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102499071] [2023-11-06 22:40:37,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102499071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:37,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:37,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:40:37,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99909495] [2023-11-06 22:40:37,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:37,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:40:37,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:37,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:40:37,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:40:37,216 INFO L87 Difference]: Start difference. First operand 170 states and 270 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:37,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:37,409 INFO L93 Difference]: Finished difference Result 426 states and 684 transitions. [2023-11-06 22:40:37,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:40:37,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-11-06 22:40:37,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:37,414 INFO L225 Difference]: With dead ends: 426 [2023-11-06 22:40:37,414 INFO L226 Difference]: Without dead ends: 306 [2023-11-06 22:40:37,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:40:37,418 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 798 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:37,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 725 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:40:37,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-11-06 22:40:37,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 188. [2023-11-06 22:40:37,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.5935828877005347) internal successors, (298), 187 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:37,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 298 transitions. [2023-11-06 22:40:37,429 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 298 transitions. Word has length 107 [2023-11-06 22:40:37,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:37,430 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 298 transitions. [2023-11-06 22:40:37,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:37,431 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 298 transitions. [2023-11-06 22:40:37,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-06 22:40:37,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:37,432 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:37,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:40:37,433 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:37,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:37,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1024528871, now seen corresponding path program 1 times [2023-11-06 22:40:37,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:37,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87008232] [2023-11-06 22:40:37,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:37,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:38,624 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:38,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:38,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87008232] [2023-11-06 22:40:38,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87008232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:38,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:38,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:40:38,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579839019] [2023-11-06 22:40:38,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:38,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:40:38,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:38,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:40:38,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:40:38,628 INFO L87 Difference]: Start difference. First operand 188 states and 298 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:38,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:38,802 INFO L93 Difference]: Finished difference Result 468 states and 752 transitions. [2023-11-06 22:40:38,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:40:38,803 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2023-11-06 22:40:38,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:38,806 INFO L225 Difference]: With dead ends: 468 [2023-11-06 22:40:38,806 INFO L226 Difference]: Without dead ends: 348 [2023-11-06 22:40:38,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:40:38,808 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 838 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:38,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 789 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:40:38,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-11-06 22:40:38,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 229. [2023-11-06 22:40:38,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.6008771929824561) internal successors, (365), 228 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:38,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 365 transitions. [2023-11-06 22:40:38,818 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 365 transitions. Word has length 108 [2023-11-06 22:40:38,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:38,819 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 365 transitions. [2023-11-06 22:40:38,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:38,820 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 365 transitions. [2023-11-06 22:40:38,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 22:40:38,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:38,821 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:38,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:40:38,822 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:38,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:38,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1749490517, now seen corresponding path program 1 times [2023-11-06 22:40:38,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:38,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308054415] [2023-11-06 22:40:38,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:38,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:39,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:39,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:39,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308054415] [2023-11-06 22:40:39,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308054415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:39,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:39,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:40:39,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030939519] [2023-11-06 22:40:39,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:39,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:40:39,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:39,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:40:39,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:40:39,942 INFO L87 Difference]: Start difference. First operand 229 states and 365 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:40,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:40,109 INFO L93 Difference]: Finished difference Result 467 states and 748 transitions. [2023-11-06 22:40:40,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:40:40,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2023-11-06 22:40:40,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:40,113 INFO L225 Difference]: With dead ends: 467 [2023-11-06 22:40:40,113 INFO L226 Difference]: Without dead ends: 333 [2023-11-06 22:40:40,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:40:40,114 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 820 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:40,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 765 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:40:40,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2023-11-06 22:40:40,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 229. [2023-11-06 22:40:40,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.5964912280701755) internal successors, (364), 228 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 364 transitions. [2023-11-06 22:40:40,126 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 364 transitions. Word has length 109 [2023-11-06 22:40:40,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:40,127 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 364 transitions. [2023-11-06 22:40:40,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:40,127 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 364 transitions. [2023-11-06 22:40:40,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-06 22:40:40,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:40,129 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:40,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:40:40,129 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:40,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:40,130 INFO L85 PathProgramCache]: Analyzing trace with hash -737560361, now seen corresponding path program 1 times [2023-11-06 22:40:40,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:40,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045317588] [2023-11-06 22:40:40,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:40,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:40,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:41,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:41,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:41,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045317588] [2023-11-06 22:40:41,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045317588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:41,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:41,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:40:41,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917538948] [2023-11-06 22:40:41,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:41,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:40:41,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:41,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:40:41,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:40:41,236 INFO L87 Difference]: Start difference. First operand 229 states and 364 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:41,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:41,467 INFO L93 Difference]: Finished difference Result 502 states and 806 transitions. [2023-11-06 22:40:41,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:40:41,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-11-06 22:40:41,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:41,472 INFO L225 Difference]: With dead ends: 502 [2023-11-06 22:40:41,472 INFO L226 Difference]: Without dead ends: 382 [2023-11-06 22:40:41,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:40:41,473 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 761 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:41,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1302 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:40:41,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-11-06 22:40:41,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 232. [2023-11-06 22:40:41,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.593073593073593) internal successors, (368), 231 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:41,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 368 transitions. [2023-11-06 22:40:41,486 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 368 transitions. Word has length 110 [2023-11-06 22:40:41,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:41,486 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 368 transitions. [2023-11-06 22:40:41,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:41,487 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 368 transitions. [2023-11-06 22:40:41,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-06 22:40:41,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:41,488 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:41,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:40:41,489 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:41,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:41,490 INFO L85 PathProgramCache]: Analyzing trace with hash -35960487, now seen corresponding path program 1 times [2023-11-06 22:40:41,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:41,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045497967] [2023-11-06 22:40:41,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:41,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:42,589 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:42,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:42,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045497967] [2023-11-06 22:40:42,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045497967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:42,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:42,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:40:42,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939694597] [2023-11-06 22:40:42,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:42,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:40:42,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:42,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:40:42,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:40:42,594 INFO L87 Difference]: Start difference. First operand 232 states and 368 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:42,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:42,757 INFO L93 Difference]: Finished difference Result 485 states and 777 transitions. [2023-11-06 22:40:42,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:40:42,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-11-06 22:40:42,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:42,761 INFO L225 Difference]: With dead ends: 485 [2023-11-06 22:40:42,761 INFO L226 Difference]: Without dead ends: 365 [2023-11-06 22:40:42,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:40:42,763 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 847 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:42,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 811 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:40:42,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-11-06 22:40:42,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 246. [2023-11-06 22:40:42,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 1.5918367346938775) internal successors, (390), 245 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:42,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 390 transitions. [2023-11-06 22:40:42,774 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 390 transitions. Word has length 110 [2023-11-06 22:40:42,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:42,775 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 390 transitions. [2023-11-06 22:40:42,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:42,775 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 390 transitions. [2023-11-06 22:40:42,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-06 22:40:42,777 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:42,777 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:42,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:40:42,778 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:42,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:42,778 INFO L85 PathProgramCache]: Analyzing trace with hash 887468179, now seen corresponding path program 1 times [2023-11-06 22:40:42,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:42,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914778007] [2023-11-06 22:40:42,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:42,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:43,805 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:43,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:43,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914778007] [2023-11-06 22:40:43,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914778007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:43,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:43,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:40:43,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958477187] [2023-11-06 22:40:43,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:43,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:40:43,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:43,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:40:43,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:40:43,808 INFO L87 Difference]: Start difference. First operand 246 states and 390 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:44,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:44,054 INFO L93 Difference]: Finished difference Result 504 states and 807 transitions. [2023-11-06 22:40:44,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:40:44,055 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-11-06 22:40:44,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:44,061 INFO L225 Difference]: With dead ends: 504 [2023-11-06 22:40:44,061 INFO L226 Difference]: Without dead ends: 384 [2023-11-06 22:40:44,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:40:44,063 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 693 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:44,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 1558 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:40:44,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-11-06 22:40:44,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 249. [2023-11-06 22:40:44,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.5887096774193548) internal successors, (394), 248 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:44,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 394 transitions. [2023-11-06 22:40:44,076 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 394 transitions. Word has length 111 [2023-11-06 22:40:44,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:44,076 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 394 transitions. [2023-11-06 22:40:44,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:44,077 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 394 transitions. [2023-11-06 22:40:44,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-06 22:40:44,078 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:44,079 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:44,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:40:44,079 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:44,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:44,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1310170005, now seen corresponding path program 1 times [2023-11-06 22:40:44,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:44,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499667026] [2023-11-06 22:40:44,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:44,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:45,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:45,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499667026] [2023-11-06 22:40:45,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499667026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:45,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:45,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:40:45,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13026994] [2023-11-06 22:40:45,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:45,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:40:45,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:45,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:40:45,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:40:45,210 INFO L87 Difference]: Start difference. First operand 249 states and 394 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:45,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:45,390 INFO L93 Difference]: Finished difference Result 491 states and 780 transitions. [2023-11-06 22:40:45,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:40:45,391 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-11-06 22:40:45,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:45,394 INFO L225 Difference]: With dead ends: 491 [2023-11-06 22:40:45,394 INFO L226 Difference]: Without dead ends: 337 [2023-11-06 22:40:45,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:40:45,396 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 814 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:45,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 989 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:40:45,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-11-06 22:40:45,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 249. [2023-11-06 22:40:45,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.5846774193548387) internal successors, (393), 248 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:45,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 393 transitions. [2023-11-06 22:40:45,407 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 393 transitions. Word has length 111 [2023-11-06 22:40:45,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:45,408 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 393 transitions. [2023-11-06 22:40:45,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:45,408 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 393 transitions. [2023-11-06 22:40:45,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-06 22:40:45,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:45,410 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:45,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:40:45,411 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:45,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:45,411 INFO L85 PathProgramCache]: Analyzing trace with hash 412776727, now seen corresponding path program 1 times [2023-11-06 22:40:45,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:45,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563185853] [2023-11-06 22:40:45,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:45,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:47,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:47,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:47,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563185853] [2023-11-06 22:40:47,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563185853] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:40:47,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305018325] [2023-11-06 22:40:47,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:47,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:40:47,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:40:47,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:40:47,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:40:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:47,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-06 22:40:47,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:40:48,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:48,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:40:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:50,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305018325] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:40:50,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:40:50,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 15] total 33 [2023-11-06 22:40:50,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710207440] [2023-11-06 22:40:50,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:40:50,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-06 22:40:50,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:50,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-06 22:40:50,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=900, Unknown=0, NotChecked=0, Total=1056 [2023-11-06 22:40:50,275 INFO L87 Difference]: Start difference. First operand 249 states and 393 transitions. Second operand has 33 states, 33 states have (on average 9.727272727272727) internal successors, (321), 33 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:52,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:52,734 INFO L93 Difference]: Finished difference Result 1222 states and 1951 transitions. [2023-11-06 22:40:52,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-06 22:40:52,736 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 9.727272727272727) internal successors, (321), 33 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-11-06 22:40:52,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:52,743 INFO L225 Difference]: With dead ends: 1222 [2023-11-06 22:40:52,743 INFO L226 Difference]: Without dead ends: 1014 [2023-11-06 22:40:52,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=582, Invalid=2610, Unknown=0, NotChecked=0, Total=3192 [2023-11-06 22:40:52,746 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 7480 mSDsluCounter, 6496 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7480 SdHoareTripleChecker+Valid, 6870 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:52,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7480 Valid, 6870 Invalid, 1261 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:40:52,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2023-11-06 22:40:52,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 451. [2023-11-06 22:40:52,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 1.5822222222222222) internal successors, (712), 450 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:52,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 712 transitions. [2023-11-06 22:40:52,769 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 712 transitions. Word has length 111 [2023-11-06 22:40:52,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:52,769 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 712 transitions. [2023-11-06 22:40:52,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 9.727272727272727) internal successors, (321), 33 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:52,770 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 712 transitions. [2023-11-06 22:40:52,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-06 22:40:52,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:52,772 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:52,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:40:52,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:40:52,982 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:52,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:52,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1983021309, now seen corresponding path program 1 times [2023-11-06 22:40:52,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:52,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910188776] [2023-11-06 22:40:52,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:52,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:53,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:53,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:53,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910188776] [2023-11-06 22:40:53,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910188776] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:53,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:53,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:40:53,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057329222] [2023-11-06 22:40:53,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:53,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:40:53,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:53,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:40:53,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:40:53,355 INFO L87 Difference]: Start difference. First operand 451 states and 712 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:53,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:53,436 INFO L93 Difference]: Finished difference Result 718 states and 1128 transitions. [2023-11-06 22:40:53,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:40:53,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2023-11-06 22:40:53,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:53,440 INFO L225 Difference]: With dead ends: 718 [2023-11-06 22:40:53,440 INFO L226 Difference]: Without dead ends: 508 [2023-11-06 22:40:53,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:40:53,442 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 749 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:53,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 693 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:40:53,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-11-06 22:40:53,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 449. [2023-11-06 22:40:53,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 1.578125) internal successors, (707), 448 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:53,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 707 transitions. [2023-11-06 22:40:53,459 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 707 transitions. Word has length 112 [2023-11-06 22:40:53,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:53,459 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 707 transitions. [2023-11-06 22:40:53,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:53,460 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 707 transitions. [2023-11-06 22:40:53,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-06 22:40:53,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:53,462 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:53,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:40:53,462 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:53,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:53,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1758752989, now seen corresponding path program 1 times [2023-11-06 22:40:53,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:53,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316337519] [2023-11-06 22:40:53,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:53,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:53,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:53,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:53,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316337519] [2023-11-06 22:40:53,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316337519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:53,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:53,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:40:53,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105950776] [2023-11-06 22:40:53,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:53,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:40:53,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:53,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:40:53,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:40:53,843 INFO L87 Difference]: Start difference. First operand 449 states and 707 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:53,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:53,983 INFO L93 Difference]: Finished difference Result 592 states and 934 transitions. [2023-11-06 22:40:53,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:40:53,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2023-11-06 22:40:53,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:53,987 INFO L225 Difference]: With dead ends: 592 [2023-11-06 22:40:53,987 INFO L226 Difference]: Without dead ends: 381 [2023-11-06 22:40:53,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:40:53,989 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 721 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:53,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 916 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:40:53,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-11-06 22:40:54,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 358. [2023-11-06 22:40:54,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.5854341736694677) internal successors, (566), 357 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:54,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 566 transitions. [2023-11-06 22:40:54,010 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 566 transitions. Word has length 112 [2023-11-06 22:40:54,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:54,011 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 566 transitions. [2023-11-06 22:40:54,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:54,011 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 566 transitions. [2023-11-06 22:40:54,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-06 22:40:54,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:54,015 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:54,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:40:54,016 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:54,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:54,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1541550252, now seen corresponding path program 1 times [2023-11-06 22:40:54,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:54,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401523735] [2023-11-06 22:40:54,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:54,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:55,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:59,010 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 49 proven. 27 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 22:40:59,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:59,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401523735] [2023-11-06 22:40:59,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401523735] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:40:59,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473627813] [2023-11-06 22:40:59,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:59,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:40:59,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:40:59,013 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:40:59,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:40:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:59,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 1251 conjuncts, 116 conjunts are in the unsatisfiable core [2023-11-06 22:40:59,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 23 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:01,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:03,738 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 23 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:03,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473627813] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:03,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:03,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 37 [2023-11-06 22:41:03,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565453501] [2023-11-06 22:41:03,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:03,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-06 22:41:03,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:03,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-06 22:41:03,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1199, Unknown=0, NotChecked=0, Total=1332 [2023-11-06 22:41:03,746 INFO L87 Difference]: Start difference. First operand 358 states and 566 transitions. Second operand has 37 states, 37 states have (on average 14.405405405405405) internal successors, (533), 37 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:17,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:17,502 INFO L93 Difference]: Finished difference Result 6038 states and 9683 transitions. [2023-11-06 22:41:17,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2023-11-06 22:41:17,503 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 14.405405405405405) internal successors, (533), 37 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2023-11-06 22:41:17,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:17,534 INFO L225 Difference]: With dead ends: 6038 [2023-11-06 22:41:17,535 INFO L226 Difference]: Without dead ends: 5743 [2023-11-06 22:41:17,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12283 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=3544, Invalid=29762, Unknown=0, NotChecked=0, Total=33306 [2023-11-06 22:41:17,550 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 30145 mSDsluCounter, 7763 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30145 SdHoareTripleChecker+Valid, 8150 SdHoareTripleChecker+Invalid, 2560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:17,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30145 Valid, 8150 Invalid, 2560 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [89 Valid, 2471 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-06 22:41:17,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5743 states. [2023-11-06 22:41:17,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5743 to 2147. [2023-11-06 22:41:17,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2146 states have (on average 1.5801491146318734) internal successors, (3391), 2146 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:17,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3391 transitions. [2023-11-06 22:41:17,678 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3391 transitions. Word has length 189 [2023-11-06 22:41:17,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:17,678 INFO L495 AbstractCegarLoop]: Abstraction has 2147 states and 3391 transitions. [2023-11-06 22:41:17,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 14.405405405405405) internal successors, (533), 37 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:17,679 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3391 transitions. [2023-11-06 22:41:17,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-06 22:41:17,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:17,686 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:17,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 22:41:17,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:17,895 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:17,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:17,896 INFO L85 PathProgramCache]: Analyzing trace with hash -821772336, now seen corresponding path program 1 times [2023-11-06 22:41:17,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:17,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699876493] [2023-11-06 22:41:17,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:17,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:22,981 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 34 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:22,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:22,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699876493] [2023-11-06 22:41:22,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699876493] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:22,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284899075] [2023-11-06 22:41:22,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:22,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:22,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:22,989 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:23,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:41:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:23,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-06 22:41:23,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:23,733 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:41:23,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:23,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284899075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:23,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:41:23,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2023-11-06 22:41:23,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440236661] [2023-11-06 22:41:23,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:23,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:41:23,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:23,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:41:23,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:41:23,737 INFO L87 Difference]: Start difference. First operand 2147 states and 3391 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:24,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:24,225 INFO L93 Difference]: Finished difference Result 3987 states and 6369 transitions. [2023-11-06 22:41:24,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:41:24,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2023-11-06 22:41:24,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:24,246 INFO L225 Difference]: With dead ends: 3987 [2023-11-06 22:41:24,247 INFO L226 Difference]: Without dead ends: 3293 [2023-11-06 22:41:24,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2023-11-06 22:41:24,250 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 425 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:24,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 1635 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:41:24,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3293 states. [2023-11-06 22:41:24,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3293 to 2267. [2023-11-06 22:41:24,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2267 states, 2266 states have (on average 1.5741394527802295) internal successors, (3567), 2266 states have internal predecessors, (3567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:24,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 3567 transitions. [2023-11-06 22:41:24,351 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 3567 transitions. Word has length 191 [2023-11-06 22:41:24,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:24,351 INFO L495 AbstractCegarLoop]: Abstraction has 2267 states and 3567 transitions. [2023-11-06 22:41:24,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:24,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 3567 transitions. [2023-11-06 22:41:24,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-06 22:41:24,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:24,359 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:24,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:24,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:24,568 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:24,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:24,569 INFO L85 PathProgramCache]: Analyzing trace with hash -729688416, now seen corresponding path program 1 times [2023-11-06 22:41:24,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:24,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025337465] [2023-11-06 22:41:24,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:24,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:25,907 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-06 22:41:25,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:25,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025337465] [2023-11-06 22:41:25,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025337465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:25,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:25,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:41:25,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765427537] [2023-11-06 22:41:25,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:25,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:41:25,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:25,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:41:25,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:41:25,911 INFO L87 Difference]: Start difference. First operand 2267 states and 3567 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:26,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:26,094 INFO L93 Difference]: Finished difference Result 6659 states and 10507 transitions. [2023-11-06 22:41:26,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:41:26,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2023-11-06 22:41:26,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:26,123 INFO L225 Difference]: With dead ends: 6659 [2023-11-06 22:41:26,123 INFO L226 Difference]: Without dead ends: 5074 [2023-11-06 22:41:26,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:41:26,127 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 562 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:26,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [562 Valid, 1380 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:41:26,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5074 states. [2023-11-06 22:41:26,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5074 to 3906. [2023-11-06 22:41:26,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3906 states, 3905 states have (on average 1.567989756722151) internal successors, (6123), 3905 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:26,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3906 states to 3906 states and 6123 transitions. [2023-11-06 22:41:26,308 INFO L78 Accepts]: Start accepts. Automaton has 3906 states and 6123 transitions. Word has length 191 [2023-11-06 22:41:26,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:26,309 INFO L495 AbstractCegarLoop]: Abstraction has 3906 states and 6123 transitions. [2023-11-06 22:41:26,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:26,309 INFO L276 IsEmpty]: Start isEmpty. Operand 3906 states and 6123 transitions. [2023-11-06 22:41:26,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-06 22:41:26,320 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:26,320 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:26,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:41:26,321 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:26,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:26,322 INFO L85 PathProgramCache]: Analyzing trace with hash -2071794556, now seen corresponding path program 1 times [2023-11-06 22:41:26,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:26,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967975778] [2023-11-06 22:41:26,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:26,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:29,394 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 69 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:29,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:29,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967975778] [2023-11-06 22:41:29,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967975778] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:29,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122165599] [2023-11-06 22:41:29,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:29,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:29,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:29,397 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:29,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:41:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:29,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-06 22:41:29,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:30,524 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 79 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:30,525 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:31,778 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 79 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:31,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122165599] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:31,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:31,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 14] total 34 [2023-11-06 22:41:31,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213116953] [2023-11-06 22:41:31,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:31,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-06 22:41:31,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:31,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-06 22:41:31,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 22:41:31,782 INFO L87 Difference]: Start difference. First operand 3906 states and 6123 transitions. Second operand has 34 states, 34 states have (on average 14.764705882352942) internal successors, (502), 34 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:34,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:34,727 INFO L93 Difference]: Finished difference Result 7418 states and 11678 transitions. [2023-11-06 22:41:34,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-06 22:41:34,727 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 14.764705882352942) internal successors, (502), 34 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2023-11-06 22:41:34,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:34,757 INFO L225 Difference]: With dead ends: 7418 [2023-11-06 22:41:34,757 INFO L226 Difference]: Without dead ends: 5736 [2023-11-06 22:41:34,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 982 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=728, Invalid=4242, Unknown=0, NotChecked=0, Total=4970 [2023-11-06 22:41:34,764 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 4172 mSDsluCounter, 6893 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4172 SdHoareTripleChecker+Valid, 7401 SdHoareTripleChecker+Invalid, 1778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:34,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4172 Valid, 7401 Invalid, 1778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 22:41:34,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5736 states. [2023-11-06 22:41:34,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5736 to 4211. [2023-11-06 22:41:34,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4211 states, 4210 states have (on average 1.5572446555819477) internal successors, (6556), 4210 states have internal predecessors, (6556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:34,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4211 states to 4211 states and 6556 transitions. [2023-11-06 22:41:34,936 INFO L78 Accepts]: Start accepts. Automaton has 4211 states and 6556 transitions. Word has length 191 [2023-11-06 22:41:34,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:34,936 INFO L495 AbstractCegarLoop]: Abstraction has 4211 states and 6556 transitions. [2023-11-06 22:41:34,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 14.764705882352942) internal successors, (502), 34 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:34,937 INFO L276 IsEmpty]: Start isEmpty. Operand 4211 states and 6556 transitions. [2023-11-06 22:41:34,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-06 22:41:34,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:34,946 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 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 22:41:34,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:35,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:35,160 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:35,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:35,160 INFO L85 PathProgramCache]: Analyzing trace with hash -821304992, now seen corresponding path program 1 times [2023-11-06 22:41:35,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:35,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913703742] [2023-11-06 22:41:35,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:35,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:38,225 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 84 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:41:38,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:38,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913703742] [2023-11-06 22:41:38,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913703742] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:38,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114526139] [2023-11-06 22:41:38,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:38,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:38,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:38,228 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:38,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:41:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:38,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-06 22:41:38,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:38,985 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:41:38,986 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:38,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114526139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:38,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:41:38,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-06 22:41:38,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009454237] [2023-11-06 22:41:38,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:38,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:41:38,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:38,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:41:38,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:41:38,989 INFO L87 Difference]: Start difference. First operand 4211 states and 6556 transitions. Second operand has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:39,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:39,633 INFO L93 Difference]: Finished difference Result 6779 states and 10683 transitions. [2023-11-06 22:41:39,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:41:39,634 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2023-11-06 22:41:39,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:39,651 INFO L225 Difference]: With dead ends: 6779 [2023-11-06 22:41:39,651 INFO L226 Difference]: Without dead ends: 5941 [2023-11-06 22:41:39,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2023-11-06 22:41:39,656 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 991 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:39,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 1942 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:41:39,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5941 states. [2023-11-06 22:41:39,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5941 to 4663. [2023-11-06 22:41:39,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4663 states, 4662 states have (on average 1.5598455598455598) internal successors, (7272), 4662 states have internal predecessors, (7272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:39,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4663 states to 4663 states and 7272 transitions. [2023-11-06 22:41:39,915 INFO L78 Accepts]: Start accepts. Automaton has 4663 states and 7272 transitions. Word has length 192 [2023-11-06 22:41:39,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:39,916 INFO L495 AbstractCegarLoop]: Abstraction has 4663 states and 7272 transitions. [2023-11-06 22:41:39,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.6) internal successors, (186), 10 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:39,917 INFO L276 IsEmpty]: Start isEmpty. Operand 4663 states and 7272 transitions. [2023-11-06 22:41:39,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-06 22:41:39,929 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:39,929 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:39,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:40,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:40,139 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:40,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:40,140 INFO L85 PathProgramCache]: Analyzing trace with hash -55559740, now seen corresponding path program 1 times [2023-11-06 22:41:40,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:40,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516712938] [2023-11-06 22:41:40,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:40,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:42,510 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 69 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:42,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:42,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516712938] [2023-11-06 22:41:42,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516712938] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:42,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068433767] [2023-11-06 22:41:42,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:42,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:42,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:42,513 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:42,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:41:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:42,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 1261 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-06 22:41:42,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:43,676 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 53 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:43,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:45,363 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 53 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:45,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068433767] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:45,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:45,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 13] total 29 [2023-11-06 22:41:45,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762276424] [2023-11-06 22:41:45,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:45,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-06 22:41:45,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:45,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-06 22:41:45,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=714, Unknown=0, NotChecked=0, Total=812 [2023-11-06 22:41:45,368 INFO L87 Difference]: Start difference. First operand 4663 states and 7272 transitions. Second operand has 29 states, 29 states have (on average 17.93103448275862) internal successors, (520), 29 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:48,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:48,685 INFO L93 Difference]: Finished difference Result 17249 states and 27184 transitions. [2023-11-06 22:41:48,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-06 22:41:48,685 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 17.93103448275862) internal successors, (520), 29 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2023-11-06 22:41:48,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:48,711 INFO L225 Difference]: With dead ends: 17249 [2023-11-06 22:41:48,711 INFO L226 Difference]: Without dead ends: 12788 [2023-11-06 22:41:48,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 365 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=693, Invalid=3089, Unknown=0, NotChecked=0, Total=3782 [2023-11-06 22:41:48,723 INFO L413 NwaCegarLoop]: 1261 mSDtfsCounter, 4545 mSDsluCounter, 11080 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4545 SdHoareTripleChecker+Valid, 12341 SdHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:48,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4545 Valid, 12341 Invalid, 2044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 22:41:48,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12788 states. [2023-11-06 22:41:48,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12788 to 5110. [2023-11-06 22:41:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5110 states, 5109 states have (on average 1.564102564102564) internal successors, (7991), 5109 states have internal predecessors, (7991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:48,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5110 states to 5110 states and 7991 transitions. [2023-11-06 22:41:48,921 INFO L78 Accepts]: Start accepts. Automaton has 5110 states and 7991 transitions. Word has length 192 [2023-11-06 22:41:48,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:48,922 INFO L495 AbstractCegarLoop]: Abstraction has 5110 states and 7991 transitions. [2023-11-06 22:41:48,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 17.93103448275862) internal successors, (520), 29 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:48,922 INFO L276 IsEmpty]: Start isEmpty. Operand 5110 states and 7991 transitions. [2023-11-06 22:41:48,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-06 22:41:48,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:48,934 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:48,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:49,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:49,143 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:49,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:49,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1397486704, now seen corresponding path program 1 times [2023-11-06 22:41:49,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:49,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980434263] [2023-11-06 22:41:49,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:49,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:49,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:51,038 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 82 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:51,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:51,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980434263] [2023-11-06 22:41:51,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980434263] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:51,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250489338] [2023-11-06 22:41:51,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:51,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:51,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:51,044 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:51,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:41:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:51,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:41:51,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:51,766 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-06 22:41:51,766 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:41:51,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250489338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:51,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:41:51,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-06 22:41:51,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820872218] [2023-11-06 22:41:51,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:51,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:41:51,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:51,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:41:51,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:41:51,769 INFO L87 Difference]: Start difference. First operand 5110 states and 7991 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:52,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:52,160 INFO L93 Difference]: Finished difference Result 6195 states and 9735 transitions. [2023-11-06 22:41:52,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:41:52,161 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2023-11-06 22:41:52,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:52,169 INFO L225 Difference]: With dead ends: 6195 [2023-11-06 22:41:52,169 INFO L226 Difference]: Without dead ends: 4657 [2023-11-06 22:41:52,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:41:52,174 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 877 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:52,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 1632 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:41:52,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4657 states. [2023-11-06 22:41:52,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4657 to 4657. [2023-11-06 22:41:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4657 states, 4656 states have (on average 1.5631443298969072) internal successors, (7278), 4656 states have internal predecessors, (7278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:52,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4657 states to 4657 states and 7278 transitions. [2023-11-06 22:41:52,300 INFO L78 Accepts]: Start accepts. Automaton has 4657 states and 7278 transitions. Word has length 192 [2023-11-06 22:41:52,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:52,301 INFO L495 AbstractCegarLoop]: Abstraction has 4657 states and 7278 transitions. [2023-11-06 22:41:52,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:52,301 INFO L276 IsEmpty]: Start isEmpty. Operand 4657 states and 7278 transitions. [2023-11-06 22:41:52,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-06 22:41:52,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:52,311 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:52,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:52,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:52,519 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:52,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:52,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1135452050, now seen corresponding path program 1 times [2023-11-06 22:41:52,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:52,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732618434] [2023-11-06 22:41:52,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:52,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:54,998 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 84 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:41:54,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:54,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732618434] [2023-11-06 22:41:54,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732618434] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:54,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121168618] [2023-11-06 22:41:54,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:55,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:55,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:55,001 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:55,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:41:55,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:55,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 134 conjunts are in the unsatisfiable core [2023-11-06 22:41:55,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:56,617 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 41 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:56,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:59,420 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 32 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:59,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121168618] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:59,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:59,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20, 24] total 51 [2023-11-06 22:41:59,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216904157] [2023-11-06 22:41:59,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:59,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-06 22:41:59,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:59,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-06 22:41:59,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=2298, Unknown=0, NotChecked=0, Total=2550 [2023-11-06 22:41:59,426 INFO L87 Difference]: Start difference. First operand 4657 states and 7278 transitions. Second operand has 51 states, 51 states have (on average 10.392156862745098) internal successors, (530), 51 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:04,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:04,210 INFO L93 Difference]: Finished difference Result 47380 states and 75278 transitions. [2023-11-06 22:43:04,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 496 states. [2023-11-06 22:43:04,212 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 10.392156862745098) internal successors, (530), 51 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2023-11-06 22:43:04,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:04,273 INFO L225 Difference]: With dead ends: 47380 [2023-11-06 22:43:04,273 INFO L226 Difference]: Without dead ends: 44978 [2023-11-06 22:43:04,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 891 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 542 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129584 ImplicationChecksByTransitivity, 51.5s TimeCoverageRelationStatistics Valid=23874, Invalid=271518, Unknown=0, NotChecked=0, Total=295392 [2023-11-06 22:43:04,312 INFO L413 NwaCegarLoop]: 1105 mSDtfsCounter, 24712 mSDsluCounter, 30937 mSDsCounter, 0 mSdLazyCounter, 9611 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24712 SdHoareTripleChecker+Valid, 32042 SdHoareTripleChecker+Invalid, 9722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 9611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:04,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24712 Valid, 32042 Invalid, 9722 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [111 Valid, 9611 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2023-11-06 22:43:04,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44978 states. [2023-11-06 22:43:04,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44978 to 7528. [2023-11-06 22:43:04,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7528 states, 7527 states have (on average 1.5617111731101367) internal successors, (11755), 7527 states have internal predecessors, (11755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:04,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7528 states to 7528 states and 11755 transitions. [2023-11-06 22:43:04,936 INFO L78 Accepts]: Start accepts. Automaton has 7528 states and 11755 transitions. Word has length 193 [2023-11-06 22:43:04,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:04,936 INFO L495 AbstractCegarLoop]: Abstraction has 7528 states and 11755 transitions. [2023-11-06 22:43:04,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 10.392156862745098) internal successors, (530), 51 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:04,937 INFO L276 IsEmpty]: Start isEmpty. Operand 7528 states and 11755 transitions. [2023-11-06 22:43:04,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-06 22:43:04,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:04,949 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:04,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:05,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:05,158 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:05,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:05,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1734732334, now seen corresponding path program 1 times [2023-11-06 22:43:05,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:05,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635378822] [2023-11-06 22:43:05,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:05,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:05,559 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-06 22:43:05,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:05,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635378822] [2023-11-06 22:43:05,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635378822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:05,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:05,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:43:05,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031114632] [2023-11-06 22:43:05,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:05,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:43:05,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:05,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:43:05,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:43:05,562 INFO L87 Difference]: Start difference. First operand 7528 states and 11755 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:05,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:05,694 INFO L93 Difference]: Finished difference Result 12019 states and 18786 transitions. [2023-11-06 22:43:05,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:43:05,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2023-11-06 22:43:05,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:05,706 INFO L225 Difference]: With dead ends: 12019 [2023-11-06 22:43:05,706 INFO L226 Difference]: Without dead ends: 6884 [2023-11-06 22:43:05,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:43:05,714 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 710 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:05,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 696 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:43:05,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6884 states. [2023-11-06 22:43:05,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6884 to 6884. [2023-11-06 22:43:05,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6884 states, 6883 states have (on average 1.5626906872003488) internal successors, (10756), 6883 states have internal predecessors, (10756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:05,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6884 states to 6884 states and 10756 transitions. [2023-11-06 22:43:05,900 INFO L78 Accepts]: Start accepts. Automaton has 6884 states and 10756 transitions. Word has length 194 [2023-11-06 22:43:05,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:05,900 INFO L495 AbstractCegarLoop]: Abstraction has 6884 states and 10756 transitions. [2023-11-06 22:43:05,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:05,900 INFO L276 IsEmpty]: Start isEmpty. Operand 6884 states and 10756 transitions. [2023-11-06 22:43:05,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-11-06 22:43:05,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:05,912 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:05,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-06 22:43:05,913 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:05,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:05,914 INFO L85 PathProgramCache]: Analyzing trace with hash -901694712, now seen corresponding path program 1 times [2023-11-06 22:43:05,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:05,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806650721] [2023-11-06 22:43:05,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:05,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:08,072 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 44 proven. 35 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 22:43:08,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:08,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806650721] [2023-11-06 22:43:08,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806650721] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:43:08,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113593072] [2023-11-06 22:43:08,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:08,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:08,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:08,075 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:08,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:43:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:08,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-06 22:43:08,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:09,323 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 80 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:09,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 83 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:10,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113593072] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:10,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:43:10,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 15] total 32 [2023-11-06 22:43:10,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694915015] [2023-11-06 22:43:10,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:10,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-06 22:43:10,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:10,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-06 22:43:10,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2023-11-06 22:43:10,374 INFO L87 Difference]: Start difference. First operand 6884 states and 10756 transitions. Second operand has 32 states, 32 states have (on average 16.40625) internal successors, (525), 32 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:18,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:18,762 INFO L93 Difference]: Finished difference Result 35559 states and 56105 transitions. [2023-11-06 22:43:18,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2023-11-06 22:43:18,763 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 16.40625) internal successors, (525), 32 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2023-11-06 22:43:18,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:18,785 INFO L225 Difference]: With dead ends: 35559 [2023-11-06 22:43:18,786 INFO L226 Difference]: Without dead ends: 29364 [2023-11-06 22:43:18,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8197 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=3600, Invalid=19656, Unknown=0, NotChecked=0, Total=23256 [2023-11-06 22:43:18,799 INFO L413 NwaCegarLoop]: 1136 mSDtfsCounter, 9591 mSDsluCounter, 16078 mSDsCounter, 0 mSdLazyCounter, 3397 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9591 SdHoareTripleChecker+Valid, 17214 SdHoareTripleChecker+Invalid, 3445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 3397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:18,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9591 Valid, 17214 Invalid, 3445 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 3397 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-06 22:43:18,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29364 states. [2023-11-06 22:43:19,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29364 to 10783. [2023-11-06 22:43:19,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10783 states, 10782 states have (on average 1.563068076423669) internal successors, (16853), 10782 states have internal predecessors, (16853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:19,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10783 states to 10783 states and 16853 transitions. [2023-11-06 22:43:19,276 INFO L78 Accepts]: Start accepts. Automaton has 10783 states and 16853 transitions. Word has length 194 [2023-11-06 22:43:19,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:19,276 INFO L495 AbstractCegarLoop]: Abstraction has 10783 states and 16853 transitions. [2023-11-06 22:43:19,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 16.40625) internal successors, (525), 32 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:19,277 INFO L276 IsEmpty]: Start isEmpty. Operand 10783 states and 16853 transitions. [2023-11-06 22:43:19,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-11-06 22:43:19,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:19,313 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:19,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:43:19,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-06 22:43:19,521 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:19,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:19,522 INFO L85 PathProgramCache]: Analyzing trace with hash 189063599, now seen corresponding path program 1 times [2023-11-06 22:43:19,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:19,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333259567] [2023-11-06 22:43:19,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:19,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-06 22:43:22,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:22,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333259567] [2023-11-06 22:43:22,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333259567] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:43:22,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:43:22,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:43:22,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050047327] [2023-11-06 22:43:22,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:43:22,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:43:22,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:22,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:43:22,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:43:22,577 INFO L87 Difference]: Start difference. First operand 10783 states and 16853 transitions. Second operand has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:23,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:43:23,344 INFO L93 Difference]: Finished difference Result 27282 states and 43028 transitions. [2023-11-06 22:43:23,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:43:23,345 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 270 [2023-11-06 22:43:23,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:43:23,358 INFO L225 Difference]: With dead ends: 27282 [2023-11-06 22:43:23,359 INFO L226 Difference]: Without dead ends: 22045 [2023-11-06 22:43:23,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:43:23,365 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 936 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:43:23,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 1690 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:43:23,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22045 states. [2023-11-06 22:43:23,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22045 to 9988. [2023-11-06 22:43:23,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9988 states, 9987 states have (on average 1.5635325923700811) internal successors, (15615), 9987 states have internal predecessors, (15615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:23,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9988 states to 9988 states and 15615 transitions. [2023-11-06 22:43:23,664 INFO L78 Accepts]: Start accepts. Automaton has 9988 states and 15615 transitions. Word has length 270 [2023-11-06 22:43:23,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:43:23,665 INFO L495 AbstractCegarLoop]: Abstraction has 9988 states and 15615 transitions. [2023-11-06 22:43:23,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:43:23,665 INFO L276 IsEmpty]: Start isEmpty. Operand 9988 states and 15615 transitions. [2023-11-06 22:43:23,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-11-06 22:43:23,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:43:23,686 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:23,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-06 22:43:23,686 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:43:23,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:43:23,687 INFO L85 PathProgramCache]: Analyzing trace with hash 174151755, now seen corresponding path program 1 times [2023-11-06 22:43:23,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:43:23,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409636649] [2023-11-06 22:43:23,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:23,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:43:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:28,790 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 132 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:43:28,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:43:28,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409636649] [2023-11-06 22:43:28,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409636649] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:43:28,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699581421] [2023-11-06 22:43:28,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:43:28,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:43:28,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:43:28,792 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:43:28,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ac4d482-5de7-4aba-ae5a-394b620436bb/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:43:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:43:29,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 1809 conjuncts, 122 conjunts are in the unsatisfiable core [2023-11-06 22:43:29,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:43:30,443 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 166 proven. 38 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:43:30,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:43:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 136 proven. 74 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-06 22:43:32,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699581421] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:43:32,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:43:32,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 19] total 46 [2023-11-06 22:43:32,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289537681] [2023-11-06 22:43:32,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:43:32,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-06 22:43:32,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:43:32,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-06 22:43:32,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1896, Unknown=0, NotChecked=0, Total=2070 [2023-11-06 22:43:32,637 INFO L87 Difference]: Start difference. First operand 9988 states and 15615 transitions. Second operand has 46 states, 46 states have (on average 14.326086956521738) internal successors, (659), 46 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)