./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/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_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/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_963f6973-0227-44dd-90a3-7af34d2bacec/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 827228a8fb731d7038bb1b8c7cce3c35edda9a5c3ee552084966688fbdc104d2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:47:38,650 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:47:38,770 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 22:47:38,781 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:47:38,784 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:47:38,820 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:47:38,821 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:47:38,822 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:47:38,824 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:47:38,828 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:47:38,829 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:47:38,830 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:47:38,830 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:47:38,832 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:47:38,833 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:47:38,833 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:47:38,834 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:47:38,834 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:47:38,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:47:38,835 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:47:38,836 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:47:38,836 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:47:38,837 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:47:38,838 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:47:38,838 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:47:38,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:47:38,839 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:47:38,840 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:47:38,840 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:47:38,841 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:47:38,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:47:38,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:47:38,843 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:47:38,843 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:47:38,843 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:47:38,843 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:47:38,844 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_963f6973-0227-44dd-90a3-7af34d2bacec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 827228a8fb731d7038bb1b8c7cce3c35edda9a5c3ee552084966688fbdc104d2 [2023-11-06 22:47:39,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:47:39,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:47:39,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:47:39,160 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:47:39,161 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:47:39,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c [2023-11-06 22:47:42,228 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:47:42,438 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:47:42,438 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c [2023-11-06 22:47:42,448 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/data/cd8c5f3ef/2c9fa032a6954224a94345d0efc88835/FLAGcbde7e7a9 [2023-11-06 22:47:42,464 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/data/cd8c5f3ef/2c9fa032a6954224a94345d0efc88835 [2023-11-06 22:47:42,467 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:47:42,468 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:47:42,470 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:47:42,470 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:47:42,480 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:47:42,481 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:47:42" (1/1) ... [2023-11-06 22:47:42,482 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc54b17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:42, skipping insertion in model container [2023-11-06 22:47:42,482 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:47:42" (1/1) ... [2023-11-06 22:47:42,534 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:47:42,729 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_963f6973-0227-44dd-90a3-7af34d2bacec/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c[1250,1263] [2023-11-06 22:47:42,820 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:47:42,832 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:47:42,844 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_963f6973-0227-44dd-90a3-7af34d2bacec/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c[1250,1263] [2023-11-06 22:47:42,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:47:42,903 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:47:42,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:42 WrapperNode [2023-11-06 22:47:42,904 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:47:42,905 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:47:42,906 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:47:42,906 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:47:42,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:42" (1/1) ... [2023-11-06 22:47:42,937 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:42" (1/1) ... [2023-11-06 22:47:43,022 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 346 [2023-11-06 22:47:43,027 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:47:43,028 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:47:43,028 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:47:43,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:47:43,039 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:42" (1/1) ... [2023-11-06 22:47:43,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:42" (1/1) ... [2023-11-06 22:47:43,061 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:42" (1/1) ... [2023-11-06 22:47:43,062 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:42" (1/1) ... [2023-11-06 22:47:43,084 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:42" (1/1) ... [2023-11-06 22:47:43,089 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:42" (1/1) ... [2023-11-06 22:47:43,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:42" (1/1) ... [2023-11-06 22:47:43,111 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:42" (1/1) ... [2023-11-06 22:47:43,119 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:47:43,124 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:47:43,124 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:47:43,124 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:47:43,125 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:42" (1/1) ... [2023-11-06 22:47:43,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:47:43,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:47:43,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:47:43,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:47:43,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:47:43,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:47:43,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:47:43,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:47:43,343 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:47:43,345 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:47:44,024 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:47:44,030 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:47:44,030 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:47:44,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:47:44 BoogieIcfgContainer [2023-11-06 22:47:44,033 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:47:44,035 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:47:44,036 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:47:44,039 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:47:44,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:47:42" (1/3) ... [2023-11-06 22:47:44,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3751844d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:47:44, skipping insertion in model container [2023-11-06 22:47:44,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:47:42" (2/3) ... [2023-11-06 22:47:44,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3751844d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:47:44, skipping insertion in model container [2023-11-06 22:47:44,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:47:44" (3/3) ... [2023-11-06 22:47:44,047 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_segments.c [2023-11-06 22:47:44,080 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:47:44,080 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:47:44,144 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:47:44,153 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;@78ba7212, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:47:44,154 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:47:44,159 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 63 states have (on average 1.6349206349206349) internal successors, (103), 64 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:44,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-06 22:47:44,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:44,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:44,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:44,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:44,177 INFO L85 PathProgramCache]: Analyzing trace with hash 258046968, now seen corresponding path program 1 times [2023-11-06 22:47:44,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:44,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280449605] [2023-11-06 22:47:44,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:44,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:44,946 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 22:47:44,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:44,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280449605] [2023-11-06 22:47:44,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280449605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:44,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:44,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:47:44,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557450554] [2023-11-06 22:47:44,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:44,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:47:44,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:44,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:47:45,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:47:45,004 INFO L87 Difference]: Start difference. First operand has 65 states, 63 states have (on average 1.6349206349206349) internal successors, (103), 64 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 22:47:45,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:45,079 INFO L93 Difference]: Finished difference Result 123 states and 199 transitions. [2023-11-06 22:47:45,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:47:45,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2023-11-06 22:47:45,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:45,094 INFO L225 Difference]: With dead ends: 123 [2023-11-06 22:47:45,094 INFO L226 Difference]: Without dead ends: 63 [2023-11-06 22:47:45,097 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 22:47:45,101 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 1 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 279 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 22:47:45,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 279 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:47:45,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-06 22:47:45,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-06 22:47:45,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.596774193548387) internal successors, (99), 62 states have internal predecessors, (99), 0 states have call successors, (0), 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 22:47:45,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 99 transitions. [2023-11-06 22:47:45,146 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 99 transitions. Word has length 31 [2023-11-06 22:47:45,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:45,147 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 99 transitions. [2023-11-06 22:47:45,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 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 22:47:45,148 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 99 transitions. [2023-11-06 22:47:45,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-06 22:47:45,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:45,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:45,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:47:45,149 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:45,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:45,150 INFO L85 PathProgramCache]: Analyzing trace with hash -588753480, now seen corresponding path program 1 times [2023-11-06 22:47:45,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:45,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950324526] [2023-11-06 22:47:45,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:45,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:45,364 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 22:47:45,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:45,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950324526] [2023-11-06 22:47:45,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950324526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:45,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:45,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:47:45,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672764655] [2023-11-06 22:47:45,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:45,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:47:45,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:45,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:47:45,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:47:45,370 INFO L87 Difference]: Start difference. First operand 63 states and 99 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 22:47:45,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:45,422 INFO L93 Difference]: Finished difference Result 124 states and 195 transitions. [2023-11-06 22:47:45,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:47:45,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2023-11-06 22:47:45,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:45,429 INFO L225 Difference]: With dead ends: 124 [2023-11-06 22:47:45,429 INFO L226 Difference]: Without dead ends: 66 [2023-11-06 22:47:45,430 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 22:47:45,432 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 1 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 276 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 22:47:45,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 276 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:47:45,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-06 22:47:45,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2023-11-06 22:47:45,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.578125) internal successors, (101), 64 states have internal predecessors, (101), 0 states have call successors, (0), 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 22:47:45,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 101 transitions. [2023-11-06 22:47:45,448 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 101 transitions. Word has length 32 [2023-11-06 22:47:45,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:45,449 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 101 transitions. [2023-11-06 22:47:45,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 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 22:47:45,449 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 101 transitions. [2023-11-06 22:47:45,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-06 22:47:45,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:45,451 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:45,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:47:45,451 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:45,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:45,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1281921006, now seen corresponding path program 1 times [2023-11-06 22:47:45,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:45,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027523092] [2023-11-06 22:47:45,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:45,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:45,935 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 22:47:45,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:45,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027523092] [2023-11-06 22:47:45,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027523092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:45,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:45,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:47:45,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461098400] [2023-11-06 22:47:45,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:45,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:47:45,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:45,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:47:45,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:47:45,942 INFO L87 Difference]: Start difference. First operand 65 states and 101 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 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 22:47:46,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:46,127 INFO L93 Difference]: Finished difference Result 213 states and 335 transitions. [2023-11-06 22:47:46,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:47:46,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-11-06 22:47:46,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:46,136 INFO L225 Difference]: With dead ends: 213 [2023-11-06 22:47:46,136 INFO L226 Difference]: Without dead ends: 153 [2023-11-06 22:47:46,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:47:46,145 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 369 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:46,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 454 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:47:46,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-06 22:47:46,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 68. [2023-11-06 22:47:46,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.5522388059701493) internal successors, (104), 67 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:46,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 104 transitions. [2023-11-06 22:47:46,165 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 104 transitions. Word has length 33 [2023-11-06 22:47:46,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:46,166 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 104 transitions. [2023-11-06 22:47:46,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 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 22:47:46,171 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 104 transitions. [2023-11-06 22:47:46,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-06 22:47:46,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:46,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:46,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:47:46,175 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:46,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:46,177 INFO L85 PathProgramCache]: Analyzing trace with hash 493086356, now seen corresponding path program 1 times [2023-11-06 22:47:46,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:46,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038222891] [2023-11-06 22:47:46,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:46,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:47,775 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 22:47:47,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:47,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038222891] [2023-11-06 22:47:47,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038222891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:47,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:47,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-06 22:47:47,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722058928] [2023-11-06 22:47:47,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:47,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:47:47,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:47,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:47:47,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:47:47,783 INFO L87 Difference]: Start difference. First operand 68 states and 104 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 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 22:47:51,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:51,986 INFO L93 Difference]: Finished difference Result 598 states and 928 transitions. [2023-11-06 22:47:51,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-11-06 22:47:51,987 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-11-06 22:47:51,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:51,991 INFO L225 Difference]: With dead ends: 598 [2023-11-06 22:47:51,991 INFO L226 Difference]: Without dead ends: 535 [2023-11-06 22:47:51,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2502 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1636, Invalid=5504, Unknown=0, NotChecked=0, Total=7140 [2023-11-06 22:47:52,004 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 3054 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3054 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:52,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3054 Valid, 1431 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:47:52,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2023-11-06 22:47:52,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 91. [2023-11-06 22:47:52,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.5555555555555556) internal successors, (140), 90 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:47:52,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 140 transitions. [2023-11-06 22:47:52,032 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 140 transitions. Word has length 33 [2023-11-06 22:47:52,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:52,033 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 140 transitions. [2023-11-06 22:47:52,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 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 22:47:52,033 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 140 transitions. [2023-11-06 22:47:52,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-06 22:47:52,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:52,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:52,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:47:52,036 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:52,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:52,036 INFO L85 PathProgramCache]: Analyzing trace with hash 515061406, now seen corresponding path program 1 times [2023-11-06 22:47:52,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:52,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772779298] [2023-11-06 22:47:52,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:52,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:52,440 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 22:47:52,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:52,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772779298] [2023-11-06 22:47:52,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772779298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:52,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:52,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:47:52,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073795361] [2023-11-06 22:47:52,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:52,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 22:47:52,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:52,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 22:47:52,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:47:52,445 INFO L87 Difference]: Start difference. First operand 91 states and 140 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 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 22:47:52,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:52,878 INFO L93 Difference]: Finished difference Result 412 states and 637 transitions. [2023-11-06 22:47:52,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:47:52,879 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-11-06 22:47:52,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:52,882 INFO L225 Difference]: With dead ends: 412 [2023-11-06 22:47:52,882 INFO L226 Difference]: Without dead ends: 326 [2023-11-06 22:47:52,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2023-11-06 22:47:52,884 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 714 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:52,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [714 Valid, 786 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:47:52,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-06 22:47:52,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 102. [2023-11-06 22:47:52,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.5445544554455446) internal successors, (156), 101 states have internal predecessors, (156), 0 states have call successors, (0), 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 22:47:52,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 156 transitions. [2023-11-06 22:47:52,910 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 156 transitions. Word has length 34 [2023-11-06 22:47:52,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:52,912 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 156 transitions. [2023-11-06 22:47:52,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 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 22:47:52,913 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 156 transitions. [2023-11-06 22:47:52,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-06 22:47:52,916 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:52,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:52,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:47:52,917 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:52,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:52,917 INFO L85 PathProgramCache]: Analyzing trace with hash -2004898528, now seen corresponding path program 1 times [2023-11-06 22:47:52,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:52,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16319263] [2023-11-06 22:47:52,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:52,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:53,327 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 22:47:53,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:53,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16319263] [2023-11-06 22:47:53,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16319263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:53,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:53,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:47:53,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646373859] [2023-11-06 22:47:53,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:53,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:47:53,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:53,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:47:53,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:47:53,330 INFO L87 Difference]: Start difference. First operand 102 states and 156 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 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 22:47:53,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:53,614 INFO L93 Difference]: Finished difference Result 402 states and 615 transitions. [2023-11-06 22:47:53,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:47:53,615 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-11-06 22:47:53,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:53,617 INFO L225 Difference]: With dead ends: 402 [2023-11-06 22:47:53,617 INFO L226 Difference]: Without dead ends: 302 [2023-11-06 22:47:53,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:47:53,622 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 531 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:53,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 721 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:47:53,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-06 22:47:53,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 115. [2023-11-06 22:47:53,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.5175438596491229) internal successors, (173), 114 states have internal predecessors, (173), 0 states have call successors, (0), 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 22:47:53,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 173 transitions. [2023-11-06 22:47:53,640 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 173 transitions. Word has length 34 [2023-11-06 22:47:53,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:53,640 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 173 transitions. [2023-11-06 22:47:53,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 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 22:47:53,641 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 173 transitions. [2023-11-06 22:47:53,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-06 22:47:53,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:53,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:53,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:47:53,643 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:53,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:53,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1472480252, now seen corresponding path program 1 times [2023-11-06 22:47:53,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:53,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521902067] [2023-11-06 22:47:53,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:53,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:53,778 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 22:47:53,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:53,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521902067] [2023-11-06 22:47:53,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521902067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:53,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:53,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:47:53,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669275706] [2023-11-06 22:47:53,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:53,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:47:53,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:53,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:47:53,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:47:53,781 INFO L87 Difference]: Start difference. First operand 115 states and 173 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 22:47:53,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:53,845 INFO L93 Difference]: Finished difference Result 332 states and 499 transitions. [2023-11-06 22:47:53,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:47:53,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-11-06 22:47:53,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:53,848 INFO L225 Difference]: With dead ends: 332 [2023-11-06 22:47:53,848 INFO L226 Difference]: Without dead ends: 220 [2023-11-06 22:47:53,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:47:53,850 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 252 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:53,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 259 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:47:53,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-11-06 22:47:53,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 173. [2023-11-06 22:47:53,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.5116279069767442) internal successors, (260), 172 states have internal predecessors, (260), 0 states have call successors, (0), 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 22:47:53,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 260 transitions. [2023-11-06 22:47:53,861 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 260 transitions. Word has length 34 [2023-11-06 22:47:53,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:53,862 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 260 transitions. [2023-11-06 22:47:53,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 22:47:53,862 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 260 transitions. [2023-11-06 22:47:53,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-06 22:47:53,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:53,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:53,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:47:53,864 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:53,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:53,865 INFO L85 PathProgramCache]: Analyzing trace with hash -41592586, now seen corresponding path program 1 times [2023-11-06 22:47:53,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:53,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550957184] [2023-11-06 22:47:53,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:53,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:54,346 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 22:47:54,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:54,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550957184] [2023-11-06 22:47:54,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550957184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:54,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:54,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:47:54,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450505802] [2023-11-06 22:47:54,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:54,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:47:54,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:54,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:47:54,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:47:54,350 INFO L87 Difference]: Start difference. First operand 173 states and 260 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 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 22:47:54,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:54,720 INFO L93 Difference]: Finished difference Result 654 states and 973 transitions. [2023-11-06 22:47:54,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:47:54,721 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-11-06 22:47:54,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:54,724 INFO L225 Difference]: With dead ends: 654 [2023-11-06 22:47:54,724 INFO L226 Difference]: Without dead ends: 509 [2023-11-06 22:47:54,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:47:54,726 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 587 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:54,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 622 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:47:54,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2023-11-06 22:47:54,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 205. [2023-11-06 22:47:54,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.4901960784313726) internal successors, (304), 204 states have internal predecessors, (304), 0 states have call successors, (0), 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 22:47:54,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 304 transitions. [2023-11-06 22:47:54,740 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 304 transitions. Word has length 34 [2023-11-06 22:47:54,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:54,740 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 304 transitions. [2023-11-06 22:47:54,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 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 22:47:54,740 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 304 transitions. [2023-11-06 22:47:54,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-06 22:47:54,741 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:54,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:54,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:47:54,742 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:54,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:54,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1207016368, now seen corresponding path program 1 times [2023-11-06 22:47:54,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:54,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982888103] [2023-11-06 22:47:54,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:54,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:54,872 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 22:47:54,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:54,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982888103] [2023-11-06 22:47:54,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982888103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:54,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:54,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:47:54,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512195648] [2023-11-06 22:47:54,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:54,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:47:54,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:54,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:47:54,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:47:54,874 INFO L87 Difference]: Start difference. First operand 205 states and 304 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 22:47:54,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:54,937 INFO L93 Difference]: Finished difference Result 399 states and 587 transitions. [2023-11-06 22:47:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:47:54,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-11-06 22:47:54,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:54,940 INFO L225 Difference]: With dead ends: 399 [2023-11-06 22:47:54,940 INFO L226 Difference]: Without dead ends: 237 [2023-11-06 22:47:54,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:47:54,941 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 260 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:54,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 260 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:47:54,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-11-06 22:47:54,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 190. [2023-11-06 22:47:54,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.4814814814814814) internal successors, (280), 189 states have internal predecessors, (280), 0 states have call successors, (0), 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 22:47:54,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 280 transitions. [2023-11-06 22:47:54,952 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 280 transitions. Word has length 34 [2023-11-06 22:47:54,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:54,953 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 280 transitions. [2023-11-06 22:47:54,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 22:47:54,953 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 280 transitions. [2023-11-06 22:47:54,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-06 22:47:54,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:54,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:54,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:47:54,954 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:54,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:54,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1537344582, now seen corresponding path program 1 times [2023-11-06 22:47:54,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:54,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042022767] [2023-11-06 22:47:54,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:54,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:55,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:47:55,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:55,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042022767] [2023-11-06 22:47:55,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042022767] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:55,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:55,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-06 22:47:55,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201399818] [2023-11-06 22:47:55,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:55,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:47:55,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:55,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:47:55,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:47:55,417 INFO L87 Difference]: Start difference. First operand 190 states and 280 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 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 22:47:56,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:56,578 INFO L93 Difference]: Finished difference Result 838 states and 1239 transitions. [2023-11-06 22:47:56,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-06 22:47:56,579 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-11-06 22:47:56,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:56,583 INFO L225 Difference]: With dead ends: 838 [2023-11-06 22:47:56,583 INFO L226 Difference]: Without dead ends: 712 [2023-11-06 22:47:56,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=363, Invalid=969, Unknown=0, NotChecked=0, Total=1332 [2023-11-06 22:47:56,585 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 1108 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:56,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 1132 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:47:56,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2023-11-06 22:47:56,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 226. [2023-11-06 22:47:56,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.488888888888889) internal successors, (335), 225 states have internal predecessors, (335), 0 states have call successors, (0), 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 22:47:56,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 335 transitions. [2023-11-06 22:47:56,603 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 335 transitions. Word has length 35 [2023-11-06 22:47:56,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:56,603 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 335 transitions. [2023-11-06 22:47:56,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 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 22:47:56,604 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 335 transitions. [2023-11-06 22:47:56,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-06 22:47:56,604 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:56,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:56,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:47:56,605 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:56,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:56,606 INFO L85 PathProgramCache]: Analyzing trace with hash -982615352, now seen corresponding path program 1 times [2023-11-06 22:47:56,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:56,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027534557] [2023-11-06 22:47:56,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:56,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:57,027 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 22:47:57,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:57,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027534557] [2023-11-06 22:47:57,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027534557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:57,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:57,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:47:57,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864599913] [2023-11-06 22:47:57,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:57,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:47:57,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:57,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:47:57,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:47:57,030 INFO L87 Difference]: Start difference. First operand 226 states and 335 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 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 22:47:57,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:57,307 INFO L93 Difference]: Finished difference Result 742 states and 1087 transitions. [2023-11-06 22:47:57,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:47:57,308 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-11-06 22:47:57,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:57,312 INFO L225 Difference]: With dead ends: 742 [2023-11-06 22:47:57,312 INFO L226 Difference]: Without dead ends: 575 [2023-11-06 22:47:57,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:47:57,313 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 496 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:57,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 796 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:47:57,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2023-11-06 22:47:57,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 270. [2023-11-06 22:47:57,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 1.449814126394052) internal successors, (390), 269 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 22:47:57,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 390 transitions. [2023-11-06 22:47:57,329 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 390 transitions. Word has length 35 [2023-11-06 22:47:57,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:57,330 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 390 transitions. [2023-11-06 22:47:57,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 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 22:47:57,330 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 390 transitions. [2023-11-06 22:47:57,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-06 22:47:57,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:57,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:57,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:47:57,331 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:57,332 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:57,332 INFO L85 PathProgramCache]: Analyzing trace with hash -490185118, now seen corresponding path program 1 times [2023-11-06 22:47:57,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:57,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643117048] [2023-11-06 22:47:57,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:57,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:57,462 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 22:47:57,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:57,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643117048] [2023-11-06 22:47:57,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643117048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:57,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:57,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:47:57,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529670358] [2023-11-06 22:47:57,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:57,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:47:57,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:57,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:47:57,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:47:57,465 INFO L87 Difference]: Start difference. First operand 270 states and 390 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 22:47:57,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:57,533 INFO L93 Difference]: Finished difference Result 493 states and 709 transitions. [2023-11-06 22:47:57,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:47:57,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-11-06 22:47:57,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:57,536 INFO L225 Difference]: With dead ends: 493 [2023-11-06 22:47:57,536 INFO L226 Difference]: Without dead ends: 291 [2023-11-06 22:47:57,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:47:57,538 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 242 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:57,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 259 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:47:57,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-06 22:47:57,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 244. [2023-11-06 22:47:57,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.4115226337448559) internal successors, (343), 243 states have internal predecessors, (343), 0 states have call successors, (0), 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 22:47:57,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 343 transitions. [2023-11-06 22:47:57,550 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 343 transitions. Word has length 35 [2023-11-06 22:47:57,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:57,551 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 343 transitions. [2023-11-06 22:47:57,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 22:47:57,551 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 343 transitions. [2023-11-06 22:47:57,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-06 22:47:57,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:57,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:57,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:47:57,552 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:57,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:57,553 INFO L85 PathProgramCache]: Analyzing trace with hash 847782764, now seen corresponding path program 1 times [2023-11-06 22:47:57,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:57,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122226780] [2023-11-06 22:47:57,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:57,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:57,677 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 22:47:57,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:57,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122226780] [2023-11-06 22:47:57,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122226780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:57,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:57,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:47:57,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310183893] [2023-11-06 22:47:57,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:57,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:47:57,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:57,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:47:57,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:47:57,680 INFO L87 Difference]: Start difference. First operand 244 states and 343 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 22:47:57,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:57,759 INFO L93 Difference]: Finished difference Result 488 states and 686 transitions. [2023-11-06 22:47:57,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:47:57,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2023-11-06 22:47:57,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:57,762 INFO L225 Difference]: With dead ends: 488 [2023-11-06 22:47:57,762 INFO L226 Difference]: Without dead ends: 264 [2023-11-06 22:47:57,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:47:57,764 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 242 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:57,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 259 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:47:57,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-06 22:47:57,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 220. [2023-11-06 22:47:57,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.4109589041095891) internal successors, (309), 219 states have internal predecessors, (309), 0 states have call successors, (0), 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 22:47:57,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 309 transitions. [2023-11-06 22:47:57,777 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 309 transitions. Word has length 35 [2023-11-06 22:47:57,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:57,777 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 309 transitions. [2023-11-06 22:47:57,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 22:47:57,777 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 309 transitions. [2023-11-06 22:47:57,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-06 22:47:57,778 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:57,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:57,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:47:57,779 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:57,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:57,779 INFO L85 PathProgramCache]: Analyzing trace with hash 367718864, now seen corresponding path program 1 times [2023-11-06 22:47:57,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:57,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371585000] [2023-11-06 22:47:57,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:57,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:57,957 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 22:47:57,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:57,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371585000] [2023-11-06 22:47:57,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371585000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:57,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:57,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:47:57,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142198575] [2023-11-06 22:47:57,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:57,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:47:57,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:57,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:47:57,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:47:57,960 INFO L87 Difference]: Start difference. First operand 220 states and 309 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 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 22:47:58,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:47:58,033 INFO L93 Difference]: Finished difference Result 428 states and 609 transitions. [2023-11-06 22:47:58,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:47:58,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2023-11-06 22:47:58,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:47:58,037 INFO L225 Difference]: With dead ends: 428 [2023-11-06 22:47:58,038 INFO L226 Difference]: Without dead ends: 228 [2023-11-06 22:47:58,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:47:58,039 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 222 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:47:58,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 259 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:47:58,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-11-06 22:47:58,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 195. [2023-11-06 22:47:58,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.4278350515463918) internal successors, (277), 194 states have internal predecessors, (277), 0 states have call successors, (0), 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 22:47:58,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 277 transitions. [2023-11-06 22:47:58,054 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 277 transitions. Word has length 36 [2023-11-06 22:47:58,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:47:58,055 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 277 transitions. [2023-11-06 22:47:58,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 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 22:47:58,055 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 277 transitions. [2023-11-06 22:47:58,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-06 22:47:58,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:47:58,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:47:58,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:47:58,057 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:47:58,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:47:58,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1467114886, now seen corresponding path program 1 times [2023-11-06 22:47:58,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:47:58,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237140314] [2023-11-06 22:47:58,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:47:58,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:47:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:47:58,649 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 22:47:58,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:47:58,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237140314] [2023-11-06 22:47:58,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237140314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:47:58,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:47:58,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-06 22:47:58,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714663146] [2023-11-06 22:47:58,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:47:58,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:47:58,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:47:58,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:47:58,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:47:58,652 INFO L87 Difference]: Start difference. First operand 195 states and 277 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 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 22:48:01,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:01,697 INFO L93 Difference]: Finished difference Result 1343 states and 1961 transitions. [2023-11-06 22:48:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-06 22:48:01,697 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2023-11-06 22:48:01,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:01,704 INFO L225 Difference]: With dead ends: 1343 [2023-11-06 22:48:01,704 INFO L226 Difference]: Without dead ends: 1175 [2023-11-06 22:48:01,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1031, Invalid=3001, Unknown=0, NotChecked=0, Total=4032 [2023-11-06 22:48:01,708 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 1579 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:01,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1579 Valid, 2080 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 22:48:01,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2023-11-06 22:48:01,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 213. [2023-11-06 22:48:01,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.4386792452830188) internal successors, (305), 212 states have internal predecessors, (305), 0 states have call successors, (0), 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 22:48:01,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 305 transitions. [2023-11-06 22:48:01,727 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 305 transitions. Word has length 37 [2023-11-06 22:48:01,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:01,727 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 305 transitions. [2023-11-06 22:48:01,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 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 22:48:01,728 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 305 transitions. [2023-11-06 22:48:01,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-06 22:48:01,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:01,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:01,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:48:01,729 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:01,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:01,730 INFO L85 PathProgramCache]: Analyzing trace with hash 307892476, now seen corresponding path program 1 times [2023-11-06 22:48:01,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:48:01,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122117208] [2023-11-06 22:48:01,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:01,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:48:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:48:01,762 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:48:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:48:01,848 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:48:01,850 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:48:01,851 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 22:48:01,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:48:01,858 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:01,863 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:48:01,950 WARN L316 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-06 22:48:01,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:48:01 BoogieIcfgContainer [2023-11-06 22:48:01,972 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:48:01,973 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:48:01,973 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:48:01,973 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:48:01,974 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:47:44" (3/4) ... [2023-11-06 22:48:01,977 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-06 22:48:01,978 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:48:01,979 INFO L158 Benchmark]: Toolchain (without parser) took 19510.26ms. Allocated memory was 157.3MB in the beginning and 281.0MB in the end (delta: 123.7MB). Free memory was 112.5MB in the beginning and 96.9MB in the end (delta: 15.6MB). Peak memory consumption was 141.0MB. Max. memory is 16.1GB. [2023-11-06 22:48:01,979 INFO L158 Benchmark]: CDTParser took 0.61ms. Allocated memory is still 109.1MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:48:01,980 INFO L158 Benchmark]: CACSL2BoogieTranslator took 434.63ms. Allocated memory is still 157.3MB. Free memory was 112.5MB in the beginning and 97.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-06 22:48:01,980 INFO L158 Benchmark]: Boogie Procedure Inliner took 122.25ms. Allocated memory is still 157.3MB. Free memory was 97.8MB in the beginning and 90.3MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-06 22:48:01,981 INFO L158 Benchmark]: Boogie Preprocessor took 94.71ms. Allocated memory is still 157.3MB. Free memory was 90.3MB in the beginning and 86.7MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 22:48:01,981 INFO L158 Benchmark]: RCFGBuilder took 909.23ms. Allocated memory is still 157.3MB. Free memory was 86.7MB in the beginning and 104.0MB in the end (delta: -17.3MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2023-11-06 22:48:01,982 INFO L158 Benchmark]: TraceAbstraction took 17936.70ms. Allocated memory was 157.3MB in the beginning and 281.0MB in the end (delta: 123.7MB). Free memory was 103.1MB in the beginning and 98.0MB in the end (delta: 5.1MB). Peak memory consumption was 128.6MB. Max. memory is 16.1GB. [2023-11-06 22:48:01,982 INFO L158 Benchmark]: Witness Printer took 5.39ms. Allocated memory is still 281.0MB. Free memory was 98.0MB in the beginning and 96.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:48:01,989 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61ms. Allocated memory is still 109.1MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 434.63ms. Allocated memory is still 157.3MB. Free memory was 112.5MB in the beginning and 97.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 122.25ms. Allocated memory is still 157.3MB. Free memory was 97.8MB in the beginning and 90.3MB in the end (delta: 7.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 94.71ms. Allocated memory is still 157.3MB. Free memory was 90.3MB in the beginning and 86.7MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 909.23ms. Allocated memory is still 157.3MB. Free memory was 86.7MB in the beginning and 104.0MB in the end (delta: -17.3MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. * TraceAbstraction took 17936.70ms. Allocated memory was 157.3MB in the beginning and 281.0MB in the end (delta: 123.7MB). Free memory was 103.1MB in the beginning and 98.0MB in the end (delta: 5.1MB). Peak memory consumption was 128.6MB. Max. memory is 16.1GB. * Witness Printer took 5.39ms. Allocated memory is still 281.0MB. Free memory was 98.0MB in the beginning and 96.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 113. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 8); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (8 - 1); [L32] const SORT_8 mask_SORT_8 = (SORT_8)-1 >> (sizeof(SORT_8) * 8 - 32); [L33] const SORT_8 msb_SORT_8 = (SORT_8)1 << (32 - 1); [L35] const SORT_52 mask_SORT_52 = (SORT_52)-1 >> (sizeof(SORT_52) * 8 - 2); [L36] const SORT_52 msb_SORT_52 = (SORT_52)1 << (2 - 1); [L38] const SORT_54 mask_SORT_54 = (SORT_54)-1 >> (sizeof(SORT_54) * 8 - 3); [L39] const SORT_54 msb_SORT_54 = (SORT_54)1 << (3 - 1); [L41] const SORT_4 var_5 = 0; [L42] const SORT_8 var_10 = 0; [L43] const SORT_8 var_13 = 1; [L44] const SORT_8 var_17 = 2; [L45] const SORT_8 var_21 = 3; [L46] const SORT_8 var_25 = 4; [L47] const SORT_1 var_30 = 1; [L48] const SORT_4 var_41 = 1; [L49] const SORT_4 var_44 = 4; [L50] const SORT_4 var_45 = 3; [L51] const SORT_4 var_50 = 2; [L53] SORT_1 input_2; [L54] SORT_1 input_3; [L56] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 VAL [__VERIFIER_nondet_uchar() & mask_SORT_4=0, __VERIFIER_nondet_uchar()=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, var_10=0, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L56] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L58] SORT_4 init_7_arg_1 = var_5; [L59] state_6 = init_7_arg_1 VAL [init_7_arg_1=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L62] input_2 = __VERIFIER_nondet_uchar() [L63] input_3 = __VERIFIER_nondet_uchar() [L64] EXPR input_3 & mask_SORT_1 VAL [init_7_arg_1=0, input_3 & mask_SORT_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0] [L64] input_3 = input_3 & mask_SORT_1 [L67] SORT_4 var_9_arg_0 = state_6; VAL [init_7_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9_arg_0=0] [L68] EXPR var_9_arg_0 & mask_SORT_4 VAL [init_7_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9_arg_0 & mask_SORT_4=0, var_9_arg_0=0] [L68] var_9_arg_0 = var_9_arg_0 & mask_SORT_4 [L69] SORT_8 var_9 = var_9_arg_0; [L70] SORT_8 var_11_arg_0 = var_9; [L71] SORT_8 var_11_arg_1 = var_10; [L72] SORT_1 var_11 = var_11_arg_0 == var_11_arg_1; [L73] SORT_4 var_12_arg_0 = state_6; VAL [init_7_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_11=1, var_11_arg_0=0, var_11_arg_1=0, var_12_arg_0=0, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9=0, var_9_arg_0=0] [L74] EXPR var_12_arg_0 & mask_SORT_4 VAL [init_7_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_11=1, var_11_arg_0=0, var_11_arg_1=0, var_12_arg_0 & mask_SORT_4=0, var_12_arg_0=0, var_13=1, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9=0, var_9_arg_0=0] [L74] var_12_arg_0 = var_12_arg_0 & mask_SORT_4 [L75] SORT_8 var_12 = var_12_arg_0; [L76] SORT_8 var_14_arg_0 = var_12; [L77] SORT_8 var_14_arg_1 = var_13; [L78] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L79] SORT_1 var_15_arg_0 = var_11; [L80] SORT_1 var_15_arg_1 = var_14; VAL [init_7_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_11=1, var_11_arg_0=0, var_11_arg_1=0, var_12=0, var_12_arg_0=0, var_13=1, var_14=0, var_14_arg_0=0, var_14_arg_1=1, var_15_arg_0=1, var_15_arg_1=0, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9=0, var_9_arg_0=0] [L81] EXPR var_15_arg_0 | var_15_arg_1 VAL [init_7_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_11=1, var_11_arg_0=0, var_11_arg_1=0, var_12=0, var_12_arg_0=0, var_13=1, var_14=0, var_14_arg_0=0, var_14_arg_1=1, var_15_arg_0 | var_15_arg_1=1, var_15_arg_0=1, var_15_arg_1=0, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9=0, var_9_arg_0=0] [L81] SORT_1 var_15 = var_15_arg_0 | var_15_arg_1; [L82] SORT_4 var_16_arg_0 = state_6; VAL [init_7_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_11=1, var_11_arg_0=0, var_11_arg_1=0, var_12=0, var_12_arg_0=0, var_13=1, var_14=0, var_14_arg_0=0, var_14_arg_1=1, var_15=1, var_15_arg_0=1, var_15_arg_1=0, var_16_arg_0=0, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9=0, var_9_arg_0=0] [L83] EXPR var_16_arg_0 & mask_SORT_4 VAL [init_7_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_11=1, var_11_arg_0=0, var_11_arg_1=0, var_12=0, var_12_arg_0=0, var_13=1, var_14=0, var_14_arg_0=0, var_14_arg_1=1, var_15=1, var_15_arg_0=1, var_15_arg_1=0, var_16_arg_0 & mask_SORT_4=0, var_16_arg_0=0, var_17=2, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9=0, var_9_arg_0=0] [L83] var_16_arg_0 = var_16_arg_0 & mask_SORT_4 [L84] SORT_8 var_16 = var_16_arg_0; [L85] SORT_8 var_18_arg_0 = var_16; [L86] SORT_8 var_18_arg_1 = var_17; [L87] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L88] SORT_1 var_19_arg_0 = var_15; [L89] SORT_1 var_19_arg_1 = var_18; VAL [init_7_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_11=1, var_11_arg_0=0, var_11_arg_1=0, var_12=0, var_12_arg_0=0, var_13=1, var_14=0, var_14_arg_0=0, var_14_arg_1=1, var_15=1, var_15_arg_0=1, var_15_arg_1=0, var_16=0, var_16_arg_0=0, var_17=2, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_19_arg_0=1, var_19_arg_1=0, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9=0, var_9_arg_0=0] [L90] EXPR var_19_arg_0 | var_19_arg_1 VAL [init_7_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_11=1, var_11_arg_0=0, var_11_arg_1=0, var_12=0, var_12_arg_0=0, var_13=1, var_14=0, var_14_arg_0=0, var_14_arg_1=1, var_15=1, var_15_arg_0=1, var_15_arg_1=0, var_16=0, var_16_arg_0=0, var_17=2, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_19_arg_0 | var_19_arg_1=1, var_19_arg_0=1, var_19_arg_1=0, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9=0, var_9_arg_0=0] [L90] SORT_1 var_19 = var_19_arg_0 | var_19_arg_1; [L91] SORT_4 var_20_arg_0 = state_6; VAL [init_7_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_11=1, var_11_arg_0=0, var_11_arg_1=0, var_12=0, var_12_arg_0=0, var_13=1, var_14=0, var_14_arg_0=0, var_14_arg_1=1, var_15=1, var_15_arg_0=1, var_15_arg_1=0, var_16=0, var_16_arg_0=0, var_17=2, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_19=1, var_19_arg_0=1, var_19_arg_1=0, var_20_arg_0=0, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9=0, var_9_arg_0=0] [L92] EXPR var_20_arg_0 & mask_SORT_4 VAL [init_7_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_11=1, var_11_arg_0=0, var_11_arg_1=0, var_12=0, var_12_arg_0=0, var_13=1, var_14=0, var_14_arg_0=0, var_14_arg_1=1, var_15=1, var_15_arg_0=1, var_15_arg_1=0, var_16=0, var_16_arg_0=0, var_17=2, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_19=1, var_19_arg_0=1, var_19_arg_1=0, var_20_arg_0 & mask_SORT_4=0, var_20_arg_0=0, var_21=3, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9=0, var_9_arg_0=0] [L92] var_20_arg_0 = var_20_arg_0 & mask_SORT_4 [L93] SORT_8 var_20 = var_20_arg_0; [L94] SORT_8 var_22_arg_0 = var_20; [L95] SORT_8 var_22_arg_1 = var_21; [L96] SORT_1 var_22 = var_22_arg_0 == var_22_arg_1; [L97] SORT_1 var_23_arg_0 = var_19; [L98] SORT_1 var_23_arg_1 = var_22; VAL [init_7_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_11=1, var_11_arg_0=0, var_11_arg_1=0, var_12=0, var_12_arg_0=0, var_13=1, var_14=0, var_14_arg_0=0, var_14_arg_1=1, var_15=1, var_15_arg_0=1, var_15_arg_1=0, var_16=0, var_16_arg_0=0, var_17=2, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_19=1, var_19_arg_0=1, var_19_arg_1=0, var_20=0, var_20_arg_0=0, var_21=3, var_22=0, var_22_arg_0=0, var_22_arg_1=3, var_23_arg_0=1, var_23_arg_1=0, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9=0, var_9_arg_0=0] [L99] EXPR var_23_arg_0 | var_23_arg_1 VAL [init_7_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_11=1, var_11_arg_0=0, var_11_arg_1=0, var_12=0, var_12_arg_0=0, var_13=1, var_14=0, var_14_arg_0=0, var_14_arg_1=1, var_15=1, var_15_arg_0=1, var_15_arg_1=0, var_16=0, var_16_arg_0=0, var_17=2, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_19=1, var_19_arg_0=1, var_19_arg_1=0, var_20=0, var_20_arg_0=0, var_21=3, var_22=0, var_22_arg_0=0, var_22_arg_1=3, var_23_arg_0 | var_23_arg_1=1, var_23_arg_0=1, var_23_arg_1=0, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9=0, var_9_arg_0=0] [L99] SORT_1 var_23 = var_23_arg_0 | var_23_arg_1; [L100] SORT_4 var_24_arg_0 = state_6; VAL [init_7_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_11=1, var_11_arg_0=0, var_11_arg_1=0, var_12=0, var_12_arg_0=0, var_13=1, var_14=0, var_14_arg_0=0, var_14_arg_1=1, var_15=1, var_15_arg_0=1, var_15_arg_1=0, var_16=0, var_16_arg_0=0, var_17=2, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_19=1, var_19_arg_0=1, var_19_arg_1=0, var_20=0, var_20_arg_0=0, var_21=3, var_22=0, var_22_arg_0=0, var_22_arg_1=3, var_23=1, var_23_arg_0=1, var_23_arg_1=0, var_24_arg_0=0, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9=0, var_9_arg_0=0] [L101] EXPR var_24_arg_0 & mask_SORT_4 VAL [init_7_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_11=1, var_11_arg_0=0, var_11_arg_1=0, var_12=0, var_12_arg_0=0, var_13=1, var_14=0, var_14_arg_0=0, var_14_arg_1=1, var_15=1, var_15_arg_0=1, var_15_arg_1=0, var_16=0, var_16_arg_0=0, var_17=2, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_19=1, var_19_arg_0=1, var_19_arg_1=0, var_20=0, var_20_arg_0=0, var_21=3, var_22=0, var_22_arg_0=0, var_22_arg_1=3, var_23=1, var_23_arg_0=1, var_23_arg_1=0, var_24_arg_0 & mask_SORT_4=0, var_24_arg_0=0, var_25=4, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9=0, var_9_arg_0=0] [L101] var_24_arg_0 = var_24_arg_0 & mask_SORT_4 [L102] SORT_8 var_24 = var_24_arg_0; [L103] SORT_8 var_26_arg_0 = var_24; [L104] SORT_8 var_26_arg_1 = var_25; [L105] SORT_1 var_26 = var_26_arg_0 == var_26_arg_1; [L106] SORT_1 var_27_arg_0 = var_23; [L107] SORT_1 var_27_arg_1 = var_26; VAL [init_7_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_11=1, var_11_arg_0=0, var_11_arg_1=0, var_12=0, var_12_arg_0=0, var_13=1, var_14=0, var_14_arg_0=0, var_14_arg_1=1, var_15=1, var_15_arg_0=1, var_15_arg_1=0, var_16=0, var_16_arg_0=0, var_17=2, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_19=1, var_19_arg_0=1, var_19_arg_1=0, var_20=0, var_20_arg_0=0, var_21=3, var_22=0, var_22_arg_0=0, var_22_arg_1=3, var_23=1, var_23_arg_0=1, var_23_arg_1=0, var_24=0, var_24_arg_0=0, var_25=4, var_26=0, var_26_arg_0=0, var_26_arg_1=4, var_27_arg_0=1, var_27_arg_1=0, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9=0, var_9_arg_0=0] [L108] EXPR var_27_arg_0 | var_27_arg_1 VAL [init_7_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_11=1, var_11_arg_0=0, var_11_arg_1=0, var_12=0, var_12_arg_0=0, var_13=1, var_14=0, var_14_arg_0=0, var_14_arg_1=1, var_15=1, var_15_arg_0=1, var_15_arg_1=0, var_16=0, var_16_arg_0=0, var_17=2, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_19=1, var_19_arg_0=1, var_19_arg_1=0, var_20=0, var_20_arg_0=0, var_21=3, var_22=0, var_22_arg_0=0, var_22_arg_1=3, var_23=1, var_23_arg_0=1, var_23_arg_1=0, var_24=0, var_24_arg_0=0, var_25=4, var_26=0, var_26_arg_0=0, var_26_arg_1=4, var_27_arg_0 | var_27_arg_1=1, var_27_arg_0=1, var_27_arg_1=0, var_30=1, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9=0, var_9_arg_0=0] [L108] SORT_1 var_27 = var_27_arg_0 | var_27_arg_1; [L109] SORT_1 var_31_arg_0 = var_27; [L110] SORT_1 var_31 = ~var_31_arg_0; [L111] SORT_1 var_32_arg_0 = var_30; [L112] SORT_1 var_32_arg_1 = var_31; VAL [init_7_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_11=1, var_11_arg_0=0, var_11_arg_1=0, var_12=0, var_12_arg_0=0, var_13=1, var_14=0, var_14_arg_0=0, var_14_arg_1=1, var_15=1, var_15_arg_0=1, var_15_arg_1=0, var_16=0, var_16_arg_0=0, var_17=2, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_19=1, var_19_arg_0=1, var_19_arg_1=0, var_20=0, var_20_arg_0=0, var_21=3, var_22=0, var_22_arg_0=0, var_22_arg_1=3, var_23=1, var_23_arg_0=1, var_23_arg_1=0, var_24=0, var_24_arg_0=0, var_25=4, var_26=0, var_26_arg_0=0, var_26_arg_1=4, var_27=1, var_27_arg_0=1, var_27_arg_1=0, var_30=1, var_31=254, var_31_arg_0=1, var_32_arg_0=1, var_32_arg_1=254, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9=0, var_9_arg_0=0] [L113] EXPR var_32_arg_0 & var_32_arg_1 VAL [init_7_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_11=1, var_11_arg_0=0, var_11_arg_1=0, var_12=0, var_12_arg_0=0, var_13=1, var_14=0, var_14_arg_0=0, var_14_arg_1=1, var_15=1, var_15_arg_0=1, var_15_arg_1=0, var_16=0, var_16_arg_0=0, var_17=2, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_19=1, var_19_arg_0=1, var_19_arg_1=0, var_20=0, var_20_arg_0=0, var_21=3, var_22=0, var_22_arg_0=0, var_22_arg_1=3, var_23=1, var_23_arg_0=1, var_23_arg_1=0, var_24=0, var_24_arg_0=0, var_25=4, var_26=0, var_26_arg_0=0, var_26_arg_1=4, var_27=1, var_27_arg_0=1, var_27_arg_1=0, var_30=1, var_31=254, var_31_arg_0=1, var_32_arg_0 & var_32_arg_1=1, var_32_arg_0=1, var_32_arg_1=254, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9=0, var_9_arg_0=0] [L113] SORT_1 var_32 = var_32_arg_0 & var_32_arg_1; [L114] EXPR var_32 & mask_SORT_1 VAL [init_7_arg_1=0, input_3=0, mask_SORT_1=1, mask_SORT_4=255, mask_SORT_52=3, mask_SORT_54=7, mask_SORT_8=4294967295, msb_SORT_1=1, msb_SORT_4=128, msb_SORT_52=2, msb_SORT_54=4, msb_SORT_8=2147483648, state_6=0, var_10=0, var_11=1, var_11_arg_0=0, var_11_arg_1=0, var_12=0, var_12_arg_0=0, var_13=1, var_14=0, var_14_arg_0=0, var_14_arg_1=1, var_15=1, var_15_arg_0=1, var_15_arg_1=0, var_16=0, var_16_arg_0=0, var_17=2, var_18=0, var_18_arg_0=0, var_18_arg_1=2, var_19=1, var_19_arg_0=1, var_19_arg_1=0, var_20=0, var_20_arg_0=0, var_21=3, var_22=0, var_22_arg_0=0, var_22_arg_1=3, var_23=1, var_23_arg_0=1, var_23_arg_1=0, var_24=0, var_24_arg_0=0, var_25=4, var_26=0, var_26_arg_0=0, var_26_arg_1=4, var_27=1, var_27_arg_0=1, var_27_arg_1=0, var_30=1, var_31=254, var_31_arg_0=1, var_32 & mask_SORT_1=1, var_32=1, var_32_arg_0=1, var_32_arg_1=254, var_41=1, var_44=4, var_45=3, var_50=2, var_5=0, var_9=0, var_9_arg_0=0] [L114] var_32 = var_32 & mask_SORT_1 [L115] SORT_1 bad_33_arg_0 = var_32; [L116] CALL __VERIFIER_assert(!(bad_33_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.7s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9658 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9658 mSDsluCounter, 9873 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8268 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1875 IncrementalHoareTripleChecker+Invalid, 1887 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 1605 mSDtfsCounter, 1875 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 324 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4093 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=270occurred in iteration=11, InterpolantAutomatonStates: 251, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 3216 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 549 NumberOfCodeBlocks, 549 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 497 ConstructedInterpolants, 0 QuantifiedInterpolants, 1814 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-06 22:48:02,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/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_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/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 827228a8fb731d7038bb1b8c7cce3c35edda9a5c3ee552084966688fbdc104d2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:48:04,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:48:04,897 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-11-06 22:48:04,906 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:48:04,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:48:04,954 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:48:04,955 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:48:04,956 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:48:04,957 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:48:04,962 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:48:04,963 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:48:04,964 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:48:04,964 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:48:04,967 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:48:04,967 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:48:04,968 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:48:04,968 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:48:04,969 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:48:04,969 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:48:04,969 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:48:04,970 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:48:04,970 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:48:04,971 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:48:04,971 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:48:04,972 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:48:04,972 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:48:04,973 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:48:04,973 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:04,974 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:48:04,974 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:48:04,976 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:48:04,976 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:48:04,976 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:48:04,977 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:48:04,977 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:48:04,977 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:48:04,978 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:48:04,978 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:48:04,978 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:48:04,979 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_963f6973-0227-44dd-90a3-7af34d2bacec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 827228a8fb731d7038bb1b8c7cce3c35edda9a5c3ee552084966688fbdc104d2 [2023-11-06 22:48:05,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:48:05,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:48:05,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:48:05,461 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:48:05,462 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:48:05,464 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c [2023-11-06 22:48:08,583 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:48:08,909 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:48:08,910 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c [2023-11-06 22:48:08,920 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/data/6b09f1dfd/67cc276d9b5948de91c2eadbb5394293/FLAGc8f448d6f [2023-11-06 22:48:08,939 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/data/6b09f1dfd/67cc276d9b5948de91c2eadbb5394293 [2023-11-06 22:48:08,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:48:08,948 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:48:08,951 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:08,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:48:08,956 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:48:08,957 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:08" (1/1) ... [2023-11-06 22:48:08,958 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f7d57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:08, skipping insertion in model container [2023-11-06 22:48:08,959 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:48:08" (1/1) ... [2023-11-06 22:48:09,006 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:48:09,206 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_963f6973-0227-44dd-90a3-7af34d2bacec/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c[1250,1263] [2023-11-06 22:48:09,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:09,338 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:48:09,353 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_963f6973-0227-44dd-90a3-7af34d2bacec/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_segments.c[1250,1263] [2023-11-06 22:48:09,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:48:09,444 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:48:09,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:09 WrapperNode [2023-11-06 22:48:09,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:48:09,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:09,446 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:48:09,447 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:48:09,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:09" (1/1) ... [2023-11-06 22:48:09,466 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:09" (1/1) ... [2023-11-06 22:48:09,501 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 166 [2023-11-06 22:48:09,501 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:48:09,502 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:48:09,502 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:48:09,503 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:48:09,513 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:09" (1/1) ... [2023-11-06 22:48:09,513 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:09" (1/1) ... [2023-11-06 22:48:09,519 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:09" (1/1) ... [2023-11-06 22:48:09,519 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:09" (1/1) ... [2023-11-06 22:48:09,528 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:09" (1/1) ... [2023-11-06 22:48:09,532 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:09" (1/1) ... [2023-11-06 22:48:09,534 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:09" (1/1) ... [2023-11-06 22:48:09,537 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:09" (1/1) ... [2023-11-06 22:48:09,541 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:48:09,542 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:48:09,542 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:48:09,542 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:48:09,543 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:09" (1/1) ... [2023-11-06 22:48:09,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:48:09,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:48:09,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:48:09,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:48:09,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:48:09,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:48:09,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:48:09,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:48:09,743 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:48:09,745 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:48:10,157 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:48:10,162 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:48:10,169 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:48:10,172 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:10 BoogieIcfgContainer [2023-11-06 22:48:10,172 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:48:10,174 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:48:10,176 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:48:10,180 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:48:10,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:48:08" (1/3) ... [2023-11-06 22:48:10,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ccbe1d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:10, skipping insertion in model container [2023-11-06 22:48:10,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:48:09" (2/3) ... [2023-11-06 22:48:10,185 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ccbe1d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:48:10, skipping insertion in model container [2023-11-06 22:48:10,185 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:48:10" (3/3) ... [2023-11-06 22:48:10,186 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_segments.c [2023-11-06 22:48:10,205 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:48:10,206 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:48:10,265 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:48:10,272 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;@928687c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:48:10,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:48:10,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 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 22:48:10,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-06 22:48:10,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:10,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:48:10,285 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:10,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:10,293 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2023-11-06 22:48:10,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:48:10,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076100615] [2023-11-06 22:48:10,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:10,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:48:10,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:48:10,323 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:48:10,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-06 22:48:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:10,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-06 22:48:10,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:10,869 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 22:48:10,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:48:10,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:48:10,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076100615] [2023-11-06 22:48:10,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076100615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:48:10,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:48:10,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:48:10,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727428528] [2023-11-06 22:48:10,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:48:10,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:48:10,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:48:10,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:48:10,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:48:10,920 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 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 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 22:48:10,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:48:10,993 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2023-11-06 22:48:10,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:48:10,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2023-11-06 22:48:10,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:48:11,004 INFO L225 Difference]: With dead ends: 19 [2023-11-06 22:48:11,005 INFO L226 Difference]: Without dead ends: 10 [2023-11-06 22:48:11,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:48:11,012 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:48:11,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:48:11,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-06 22:48:11,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2023-11-06 22:48:11,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 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 22:48:11,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-06 22:48:11,048 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2023-11-06 22:48:11,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:48:11,049 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-11-06 22:48:11,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 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 22:48:11,049 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-06 22:48:11,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:48:11,050 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:48:11,050 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:48:11,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:48:11,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:48:11,262 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:48:11,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:48:11,263 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2023-11-06 22:48:11,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:48:11,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167790507] [2023-11-06 22:48:11,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:48:11,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:48:11,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:48:11,266 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:48:11,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-06 22:48:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:48:11,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 79 conjunts are in the unsatisfiable core [2023-11-06 22:48:11,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:48:12,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:48:12,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:49:00,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:00,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:49:00,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167790507] [2023-11-06 22:49:00,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167790507] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:49:00,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:49:00,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-06 22:49:00,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285276814] [2023-11-06 22:49:00,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:49:00,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:49:00,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:49:00,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:49:00,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:49:00,525 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:00,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:49:00,725 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2023-11-06 22:49:00,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:49:00,726 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 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 8 [2023-11-06 22:49:00,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:49:00,727 INFO L225 Difference]: With dead ends: 15 [2023-11-06 22:49:00,727 INFO L226 Difference]: Without dead ends: 13 [2023-11-06 22:49:00,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:49:00,729 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:49:00,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 17 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:49:00,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-06 22:49:00,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2023-11-06 22:49:00,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:00,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-11-06 22:49:00,740 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2023-11-06 22:49:00,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:49:00,741 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-11-06 22:49:00,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:49:00,742 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-11-06 22:49:00,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-06 22:49:00,743 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:49:00,744 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:49:00,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:49:00,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:00,956 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:49:00,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:49:00,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2023-11-06 22:49:00,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:49:00,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953747208] [2023-11-06 22:49:00,959 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:49:00,959 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:49:00,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:49:00,960 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:49:00,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_963f6973-0227-44dd-90a3-7af34d2bacec/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-06 22:49:01,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:49:01,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:49:01,168 WARN L260 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 149 conjunts are in the unsatisfiable core [2023-11-06 22:49:01,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:49:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:49:03,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:50:12,804 WARN L293 SmtUtils]: Spent 21.68s on a formula simplification that was a NOOP. DAG size: 649 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)