./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --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 2328acd9311a64c53ad5874211f9b9da337dc2131958a2367da03f2374a4827a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:29:03,931 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:29:04,078 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-12 02:29:04,088 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:29:04,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:29:04,139 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:29:04,140 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:29:04,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:29:04,144 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:29:04,150 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:29:04,151 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:29:04,152 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:29:04,153 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:29:04,155 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:29:04,156 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:29:04,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:29:04,157 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:29:04,158 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:29:04,158 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:29:04,159 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:29:04,159 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:29:04,160 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:29:04,161 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:29:04,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:29:04,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:29:04,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:29:04,164 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:29:04,164 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:29:04,165 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:29:04,165 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:29:04,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:29:04,167 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:29:04,167 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:29:04,168 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:29:04,168 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:29:04,169 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:29:04,169 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_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2328acd9311a64c53ad5874211f9b9da337dc2131958a2367da03f2374a4827a [2023-11-12 02:29:04,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:29:04,589 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:29:04,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:29:04,594 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:29:04,595 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:29:04,597 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c [2023-11-12 02:29:07,972 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:29:08,271 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:29:08,272 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c [2023-11-12 02:29:08,286 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/data/492dcbd26/3227ffd750894b3283b3beb5be1f4f15/FLAG15e7961db [2023-11-12 02:29:08,308 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/data/492dcbd26/3227ffd750894b3283b3beb5be1f4f15 [2023-11-12 02:29:08,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:29:08,317 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:29:08,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:29:08,319 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:29:08,330 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:29:08,331 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:08,332 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d1879cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08, skipping insertion in model container [2023-11-12 02:29:08,332 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:08,391 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:29:08,604 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_39f9ac91-8b78-4864-90f2-301b843aa36a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c[1245,1258] [2023-11-12 02:29:08,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:29:08,698 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:29:08,715 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_39f9ac91-8b78-4864-90f2-301b843aa36a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c[1245,1258] [2023-11-12 02:29:08,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:29:08,802 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:29:08,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08 WrapperNode [2023-11-12 02:29:08,803 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:29:08,804 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:29:08,804 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:29:08,804 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:29:08,811 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:08,825 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:08,918 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 326 [2023-11-12 02:29:08,918 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:29:08,919 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:29:08,919 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:29:08,919 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:29:08,931 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:08,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:08,942 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:08,942 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:08,965 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:08,974 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:08,979 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:08,985 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:08,997 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:29:08,998 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:29:08,999 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:29:08,999 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:29:09,000 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (1/1) ... [2023-11-12 02:29:09,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:29:09,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:09,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:29:09,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:29:09,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:29:09,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:29:09,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:29:09,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:29:09,296 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:29:09,299 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:29:10,051 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:29:10,059 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:29:10,059 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:29:10,062 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:29:10 BoogieIcfgContainer [2023-11-12 02:29:10,062 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:29:10,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:29:10,065 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:29:10,069 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:29:10,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:29:08" (1/3) ... [2023-11-12 02:29:10,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6433fe47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:29:10, skipping insertion in model container [2023-11-12 02:29:10,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:08" (2/3) ... [2023-11-12 02:29:10,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6433fe47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:29:10, skipping insertion in model container [2023-11-12 02:29:10,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:29:10" (3/3) ... [2023-11-12 02:29:10,073 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal57.c [2023-11-12 02:29:10,097 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:29:10,097 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:29:10,163 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:29:10,172 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=LoopHeads, 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;@a91c586, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:29:10,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:29:10,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 51 states have (on average 1.6274509803921569) internal successors, (83), 52 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:10,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-12 02:29:10,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:10,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:10,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:10,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:10,197 INFO L85 PathProgramCache]: Analyzing trace with hash 335550580, now seen corresponding path program 1 times [2023-11-12 02:29:10,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:10,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296733181] [2023-11-12 02:29:10,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:10,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:11,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:11,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:11,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296733181] [2023-11-12 02:29:11,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296733181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:11,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:11,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:29:11,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538464507] [2023-11-12 02:29:11,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:11,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:29:11,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:11,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:29:11,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:29:11,240 INFO L87 Difference]: Start difference. First operand has 53 states, 51 states have (on average 1.6274509803921569) internal successors, (83), 52 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:11,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:11,292 INFO L93 Difference]: Finished difference Result 90 states and 144 transitions. [2023-11-12 02:29:11,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:29:11,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-12 02:29:11,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:11,305 INFO L225 Difference]: With dead ends: 90 [2023-11-12 02:29:11,306 INFO L226 Difference]: Without dead ends: 51 [2023-11-12 02:29:11,309 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 [2023-11-12 02:29:11,313 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 1 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 219 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 [2023-11-12 02:29:11,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 219 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:29:11,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-12 02:29:11,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-12 02:29:11,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.58) internal successors, (79), 50 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:11,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 79 transitions. [2023-11-12 02:29:11,359 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 79 transitions. Word has length 27 [2023-11-12 02:29:11,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:11,360 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 79 transitions. [2023-11-12 02:29:11,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:11,360 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 79 transitions. [2023-11-12 02:29:11,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-12 02:29:11,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:11,362 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:11,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:29:11,363 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:11,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:11,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1813858468, now seen corresponding path program 1 times [2023-11-12 02:29:11,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:11,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717641264] [2023-11-12 02:29:11,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:11,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:11,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:11,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717641264] [2023-11-12 02:29:11,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717641264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:11,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:11,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:29:11,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526100494] [2023-11-12 02:29:11,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:11,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:29:11,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:11,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:29:11,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:29:11,653 INFO L87 Difference]: Start difference. First operand 51 states and 79 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:11,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:11,708 INFO L93 Difference]: Finished difference Result 91 states and 140 transitions. [2023-11-12 02:29:11,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:29:11,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-11-12 02:29:11,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:11,711 INFO L225 Difference]: With dead ends: 91 [2023-11-12 02:29:11,711 INFO L226 Difference]: Without dead ends: 54 [2023-11-12 02:29:11,712 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 [2023-11-12 02:29:11,714 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 1 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 216 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 [2023-11-12 02:29:11,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 216 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:29:11,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-11-12 02:29:11,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2023-11-12 02:29:11,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.5576923076923077) internal successors, (81), 52 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:11,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 81 transitions. [2023-11-12 02:29:11,739 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 81 transitions. Word has length 28 [2023-11-12 02:29:11,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:11,742 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 81 transitions. [2023-11-12 02:29:11,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:11,743 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 81 transitions. [2023-11-12 02:29:11,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-12 02:29:11,745 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:11,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:11,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:29:11,746 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:11,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:11,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1959612688, now seen corresponding path program 1 times [2023-11-12 02:29:11,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:11,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281018566] [2023-11-12 02:29:11,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:11,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:12,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:12,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281018566] [2023-11-12 02:29:12,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281018566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:12,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:12,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:29:12,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838318152] [2023-11-12 02:29:12,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:12,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:29:12,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:12,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:29:12,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:29:12,347 INFO L87 Difference]: Start difference. First operand 53 states and 81 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:12,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:12,674 INFO L93 Difference]: Finished difference Result 144 states and 220 transitions. [2023-11-12 02:29:12,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:29:12,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-12 02:29:12,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:12,678 INFO L225 Difference]: With dead ends: 144 [2023-11-12 02:29:12,678 INFO L226 Difference]: Without dead ends: 105 [2023-11-12 02:29:12,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:29:12,681 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 295 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:12,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 298 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:29:12,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-12 02:29:12,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 67. [2023-11-12 02:29:12,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.5606060606060606) internal successors, (103), 66 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) [2023-11-12 02:29:12,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 103 transitions. [2023-11-12 02:29:12,697 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 103 transitions. Word has length 29 [2023-11-12 02:29:12,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:12,697 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 103 transitions. [2023-11-12 02:29:12,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:12,698 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 103 transitions. [2023-11-12 02:29:12,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-12 02:29:12,700 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:12,700 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] [2023-11-12 02:29:12,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:29:12,701 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:12,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:12,702 INFO L85 PathProgramCache]: Analyzing trace with hash 507744780, now seen corresponding path program 1 times [2023-11-12 02:29:12,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:12,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596567965] [2023-11-12 02:29:12,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:12,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:13,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:13,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:13,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596567965] [2023-11-12 02:29:13,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596567965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:13,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:13,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:29:13,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6349091] [2023-11-12 02:29:13,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:13,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:29:13,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:13,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:29:13,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:29:13,088 INFO L87 Difference]: Start difference. First operand 67 states and 103 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:13,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:13,459 INFO L93 Difference]: Finished difference Result 176 states and 268 transitions. [2023-11-12 02:29:13,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 02:29:13,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2023-11-12 02:29:13,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:13,462 INFO L225 Difference]: With dead ends: 176 [2023-11-12 02:29:13,463 INFO L226 Difference]: Without dead ends: 137 [2023-11-12 02:29:13,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2023-11-12 02:29:13,466 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 483 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:13,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 469 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:29:13,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-12 02:29:13,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 70. [2023-11-12 02:29:13,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.5507246376811594) internal successors, (107), 69 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:13,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 107 transitions. [2023-11-12 02:29:13,480 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 107 transitions. Word has length 30 [2023-11-12 02:29:13,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:13,480 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 107 transitions. [2023-11-12 02:29:13,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:29:13,481 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 107 transitions. [2023-11-12 02:29:13,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-12 02:29:13,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:13,483 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] [2023-11-12 02:29:13,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:29:13,484 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:13,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:13,484 INFO L85 PathProgramCache]: Analyzing trace with hash 114717770, now seen corresponding path program 1 times [2023-11-12 02:29:13,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:13,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403096271] [2023-11-12 02:29:13,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:13,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:29:13,530 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:29:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:29:13,653 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:29:13,653 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:29:13,654 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-12 02:29:13,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:29:13,661 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-12 02:29:13,665 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-11-12 02:29:13,714 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-12 02:29:13,719 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-12 02:29:13,721 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-12 02:29:13,722 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet6 could not be translated [2023-11-12 02:29:13,723 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated [2023-11-12 02:29:13,723 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-12 02:29:13,724 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-12 02:29:13,724 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-12 02:29:13,732 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet13 could not be translated [2023-11-12 02:29:13,734 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet15 could not be translated [2023-11-12 02:29:13,743 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet22 could not be translated [2023-11-12 02:29:13,746 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet23 could not be translated [2023-11-12 02:29:13,749 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet24 could not be translated [2023-11-12 02:29:13,753 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet25 could not be translated [2023-11-12 02:29:13,755 WARN L1567 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet26 could not be translated [2023-11-12 02:29:13,756 WARN L321 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-12 02:29:13,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 02:29:13 BoogieIcfgContainer [2023-11-12 02:29:13,787 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-12 02:29:13,788 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:29:13,789 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:29:13,789 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:29:13,790 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:29:10" (3/4) ... [2023-11-12 02:29:13,792 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-12 02:29:13,794 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:29:13,795 INFO L158 Benchmark]: Toolchain (without parser) took 5477.80ms. Allocated memory was 136.3MB in the beginning and 184.5MB in the end (delta: 48.2MB). Free memory was 91.5MB in the beginning and 103.5MB in the end (delta: -11.9MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. [2023-11-12 02:29:13,795 INFO L158 Benchmark]: CDTParser took 0.88ms. Allocated memory is still 136.3MB. Free memory is still 108.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:29:13,796 INFO L158 Benchmark]: CACSL2BoogieTranslator took 485.02ms. Allocated memory is still 136.3MB. Free memory was 91.5MB in the beginning and 77.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-12 02:29:13,799 INFO L158 Benchmark]: Boogie Procedure Inliner took 114.36ms. Allocated memory is still 136.3MB. Free memory was 76.8MB in the beginning and 70.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-12 02:29:13,802 INFO L158 Benchmark]: Boogie Preprocessor took 78.51ms. Allocated memory is still 136.3MB. Free memory was 70.6MB in the beginning and 67.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:29:13,802 INFO L158 Benchmark]: RCFGBuilder took 1064.01ms. Allocated memory is still 136.3MB. Free memory was 67.9MB in the beginning and 92.5MB in the end (delta: -24.6MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2023-11-12 02:29:13,803 INFO L158 Benchmark]: TraceAbstraction took 3722.15ms. Allocated memory was 136.3MB in the beginning and 184.5MB in the end (delta: 48.2MB). Free memory was 91.8MB in the beginning and 103.5MB in the end (delta: -11.7MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. [2023-11-12 02:29:13,803 INFO L158 Benchmark]: Witness Printer took 5.45ms. Allocated memory is still 184.5MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:29:13,809 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88ms. Allocated memory is still 136.3MB. Free memory is still 108.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 485.02ms. Allocated memory is still 136.3MB. Free memory was 91.5MB in the beginning and 77.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 114.36ms. Allocated memory is still 136.3MB. Free memory was 76.8MB in the beginning and 70.6MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.51ms. Allocated memory is still 136.3MB. Free memory was 70.6MB in the beginning and 67.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1064.01ms. Allocated memory is still 136.3MB. Free memory was 67.9MB in the beginning and 92.5MB in the end (delta: -24.6MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3722.15ms. Allocated memory was 136.3MB in the beginning and 184.5MB in the end (delta: 48.2MB). Free memory was 91.8MB in the beginning and 103.5MB in the end (delta: -11.7MB). Peak memory consumption was 35.8MB. Max. memory is 16.1GB. * Witness Printer took 5.45ms. Allocated memory is still 184.5MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet13 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet15 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet22 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet23 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet24 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet25 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet26 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 bitwiseOr at line 96, overapproximation of bitwiseAnd at line 101. 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_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 3); [L30] const SORT_5 msb_SORT_5 = (SORT_5)1 << (3 - 1); [L32] const SORT_1 var_11 = 0; [L33] const SORT_5 var_15 = 0; [L34] const SORT_5 var_21 = 1; [L35] const SORT_1 var_31 = 1; [L37] SORT_1 input_2; [L38] SORT_1 input_3; [L39] SORT_1 input_4; [L40] SORT_5 input_6; [L41] SORT_5 input_7; [L42] SORT_1 input_8; [L43] SORT_5 input_9; [L44] SORT_5 input_10; [L46] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, var_11=0, var_15=0, var_21=1, var_31=1] [L46] SORT_1 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L47] EXPR __VERIFIER_nondet_uchar() & mask_SORT_5 VAL [mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, state_12=0, var_11=0, var_15=0, var_21=1, var_31=1] [L47] SORT_5 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L48] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, state_12=0, state_16=0, var_11=0, var_15=0, var_21=1, var_31=1] [L48] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L49] EXPR __VERIFIER_nondet_uchar() & mask_SORT_5 VAL [mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, var_11=0, var_15=0, var_21=1, var_31=1] [L49] SORT_5 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L51] SORT_1 init_13_arg_1 = var_11; [L52] state_12 = init_13_arg_1 [L53] SORT_5 init_17_arg_1 = var_15; [L54] state_16 = init_17_arg_1 [L55] SORT_1 init_19_arg_1 = var_11; [L56] state_18 = init_19_arg_1 [L57] SORT_5 init_24_arg_1 = var_15; [L58] state_23 = init_24_arg_1 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_24_arg_1=0, mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_23=0, var_11=0, var_15=0, var_21=1, var_31=1] [L61] input_2 = __VERIFIER_nondet_uchar() [L62] EXPR input_2 & mask_SORT_1 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_24_arg_1=0, input_2=0, mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_23=0, var_11=0, var_15=0, var_21=1, var_31=1] [L62] input_2 = input_2 & mask_SORT_1 [L63] input_3 = __VERIFIER_nondet_uchar() [L64] EXPR input_3 & mask_SORT_1 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_24_arg_1=0, input_2=0, input_3=0, mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_23=0, var_11=0, var_15=0, var_21=1, var_31=1] [L64] input_3 = input_3 & mask_SORT_1 [L65] input_4 = __VERIFIER_nondet_uchar() [L66] input_6 = __VERIFIER_nondet_uchar() [L67] input_7 = __VERIFIER_nondet_uchar() [L68] input_8 = __VERIFIER_nondet_uchar() [L69] input_9 = __VERIFIER_nondet_uchar() [L70] input_10 = __VERIFIER_nondet_uchar() [L73] SORT_1 var_14_arg_0 = state_12; [L74] SORT_1 var_14 = ~var_14_arg_0; [L75] SORT_1 var_20_arg_0 = state_18; [L76] SORT_5 var_20_arg_1 = state_16; [L77] SORT_5 var_20_arg_2 = input_7; [L78] SORT_5 var_20 = var_20_arg_0 ? var_20_arg_1 : var_20_arg_2; VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_24_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_23=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=1, var_31=1] [L79] EXPR var_20 & mask_SORT_5 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_24_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_23=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=1, var_31=1] [L79] var_20 = var_20 & mask_SORT_5 [L80] SORT_5 var_22_arg_0 = var_20; [L81] SORT_5 var_22_arg_1 = var_21; [L82] SORT_1 var_22 = var_22_arg_0 == var_22_arg_1; [L83] SORT_1 var_25_arg_0 = state_18; [L84] SORT_5 var_25_arg_1 = state_23; [L85] SORT_5 var_25_arg_2 = input_7; [L86] SORT_5 var_25 = var_25_arg_0 ? var_25_arg_1 : var_25_arg_2; VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_24_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_23=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=1, var_22=0, var_22_arg_0=0, var_22_arg_1=1, var_25=0, var_25_arg_0=0, var_25_arg_1=0, var_25_arg_2=0, var_31=1] [L87] EXPR var_25 & mask_SORT_5 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_24_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_23=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=1, var_22=0, var_22_arg_0=0, var_22_arg_1=1, var_25=0, var_25_arg_0=0, var_25_arg_1=0, var_25_arg_2=0, var_31=1] [L87] var_25 = var_25 & mask_SORT_5 [L88] SORT_5 var_26_arg_0 = var_25; [L89] SORT_5 var_26_arg_1 = var_21; [L90] SORT_1 var_26 = var_26_arg_0 == var_26_arg_1; [L91] SORT_1 var_27_arg_0 = var_22; [L92] SORT_1 var_27_arg_1 = var_26; [L93] SORT_1 var_27 = var_27_arg_0 == var_27_arg_1; [L94] SORT_1 var_28_arg_0 = var_14; [L95] SORT_1 var_28_arg_1 = var_27; VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_24_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_23=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=1, var_22=0, var_22_arg_0=0, var_22_arg_1=1, var_25=0, var_25_arg_0=0, var_25_arg_1=0, var_25_arg_2=0, var_26=0, var_26_arg_0=0, var_26_arg_1=1, var_27=1, var_27_arg_0=0, var_27_arg_1=0, var_28_arg_0=255, var_28_arg_1=1, var_31=1] [L96] EXPR var_28_arg_0 | var_28_arg_1 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_24_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_23=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=1, var_22=0, var_22_arg_0=0, var_22_arg_1=1, var_25=0, var_25_arg_0=0, var_25_arg_1=0, var_25_arg_2=0, var_26=0, var_26_arg_0=0, var_26_arg_1=1, var_27=1, var_27_arg_0=0, var_27_arg_1=0, var_28_arg_0=255, var_28_arg_1=1, var_31=1] [L96] SORT_1 var_28 = var_28_arg_0 | var_28_arg_1; [L97] SORT_1 var_32_arg_0 = var_28; [L98] SORT_1 var_32 = ~var_32_arg_0; [L99] SORT_1 var_33_arg_0 = var_31; [L100] SORT_1 var_33_arg_1 = var_32; VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_24_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_23=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=1, var_22=0, var_22_arg_0=0, var_22_arg_1=1, var_25=0, var_25_arg_0=0, var_25_arg_1=0, var_25_arg_2=0, var_26=0, var_26_arg_0=0, var_26_arg_1=1, var_27=1, var_27_arg_0=0, var_27_arg_1=0, var_28=0, var_28_arg_0=255, var_28_arg_1=1, var_31=1, var_32=255, var_32_arg_0=0, var_33_arg_0=1, var_33_arg_1=255] [L101] EXPR var_33_arg_0 & var_33_arg_1 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_24_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_23=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=1, var_22=0, var_22_arg_0=0, var_22_arg_1=1, var_25=0, var_25_arg_0=0, var_25_arg_1=0, var_25_arg_2=0, var_26=0, var_26_arg_0=0, var_26_arg_1=1, var_27=1, var_27_arg_0=0, var_27_arg_1=0, var_28=0, var_28_arg_0=255, var_28_arg_1=1, var_31=1, var_32=255, var_32_arg_0=0, var_33_arg_0=1, var_33_arg_1=255] [L101] SORT_1 var_33 = var_33_arg_0 & var_33_arg_1; [L102] EXPR var_33 & mask_SORT_1 VAL [init_13_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_24_arg_1=0, input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_5=7, msb_SORT_1=1, msb_SORT_5=4, state_12=0, state_16=0, state_18=0, state_23=0, var_11=0, var_14=255, var_14_arg_0=0, var_15=0, var_20=0, var_20_arg_0=0, var_20_arg_1=0, var_20_arg_2=0, var_21=1, var_22=0, var_22_arg_0=0, var_22_arg_1=1, var_25=0, var_25_arg_0=0, var_25_arg_1=0, var_25_arg_2=0, var_26=0, var_26_arg_0=0, var_26_arg_1=1, var_27=1, var_27_arg_0=0, var_27_arg_1=0, var_28=0, var_28_arg_0=255, var_28_arg_1=1, var_31=1, var_32=255, var_32_arg_0=0, var_33=1, var_33_arg_0=1, var_33_arg_1=255] [L102] var_33 = var_33 & mask_SORT_1 [L103] SORT_1 bad_34_arg_0 = var_33; [L104] CALL __VERIFIER_assert(!(bad_34_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, 53 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 780 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 780 mSDsluCounter, 1202 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 872 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 119 IncrementalHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 330 mSDtfsCounter, 119 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=4, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 106 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 314 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 [2023-11-12 02:29:13,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/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_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --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 2328acd9311a64c53ad5874211f9b9da337dc2131958a2367da03f2374a4827a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:29:16,842 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:29:17,014 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-11-12 02:29:17,024 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:29:17,026 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:29:17,078 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:29:17,079 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:29:17,079 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:29:17,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:29:17,086 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:29:17,087 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:29:17,088 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:29:17,088 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:29:17,091 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:29:17,091 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:29:17,092 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:29:17,092 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:29:17,093 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:29:17,093 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:29:17,094 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:29:17,094 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 02:29:17,095 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 02:29:17,095 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:29:17,096 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:29:17,096 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:29:17,097 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:29:17,097 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:29:17,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:29:17,098 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:29:17,099 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:29:17,100 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:29:17,101 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-12 02:29:17,101 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 02:29:17,101 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:29:17,102 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:29:17,102 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:29:17,102 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:29:17,102 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-12 02:29:17,103 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:29:17,104 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_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2328acd9311a64c53ad5874211f9b9da337dc2131958a2367da03f2374a4827a [2023-11-12 02:29:17,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:29:17,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:29:17,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:29:17,602 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:29:17,602 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:29:17,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c [2023-11-12 02:29:21,481 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:29:21,816 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:29:21,817 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c [2023-11-12 02:29:21,829 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/data/165e85998/ce28f6f3ee894fe0a67a3ed79ece034c/FLAGd80ae9a33 [2023-11-12 02:29:21,848 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/data/165e85998/ce28f6f3ee894fe0a67a3ed79ece034c [2023-11-12 02:29:21,851 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:29:21,853 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:29:21,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:29:21,857 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:29:21,863 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:29:21,864 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:29:21" (1/1) ... [2023-11-12 02:29:21,866 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7916e4f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:21, skipping insertion in model container [2023-11-12 02:29:21,866 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:29:21" (1/1) ... [2023-11-12 02:29:21,903 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:29:22,084 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_39f9ac91-8b78-4864-90f2-301b843aa36a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c[1245,1258] [2023-11-12 02:29:22,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:29:22,178 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:29:22,193 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_39f9ac91-8b78-4864-90f2-301b843aa36a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal57.c[1245,1258] [2023-11-12 02:29:22,233 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:29:22,252 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:29:22,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:22 WrapperNode [2023-11-12 02:29:22,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:29:22,255 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:29:22,255 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:29:22,255 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:29:22,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:22" (1/1) ... [2023-11-12 02:29:22,282 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:22" (1/1) ... [2023-11-12 02:29:22,320 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 186 [2023-11-12 02:29:22,321 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:29:22,322 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:29:22,322 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:29:22,322 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:29:22,333 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:22" (1/1) ... [2023-11-12 02:29:22,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:22" (1/1) ... [2023-11-12 02:29:22,348 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:22" (1/1) ... [2023-11-12 02:29:22,349 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:22" (1/1) ... [2023-11-12 02:29:22,360 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:22" (1/1) ... [2023-11-12 02:29:22,380 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:22" (1/1) ... [2023-11-12 02:29:22,383 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:22" (1/1) ... [2023-11-12 02:29:22,385 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:22" (1/1) ... [2023-11-12 02:29:22,398 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:29:22,413 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:29:22,413 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:29:22,413 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:29:22,414 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:22" (1/1) ... [2023-11-12 02:29:22,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:29:22,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:29:22,467 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:29:22,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:29:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:29:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 02:29:22,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:29:22,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:29:22,779 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:29:22,782 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:29:23,200 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:29:23,207 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:29:23,209 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:29:23,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:29:23 BoogieIcfgContainer [2023-11-12 02:29:23,212 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:29:23,220 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:29:23,220 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:29:23,224 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:29:23,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:29:21" (1/3) ... [2023-11-12 02:29:23,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4bcc15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:29:23, skipping insertion in model container [2023-11-12 02:29:23,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:29:22" (2/3) ... [2023-11-12 02:29:23,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4bcc15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:29:23, skipping insertion in model container [2023-11-12 02:29:23,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:29:23" (3/3) ... [2023-11-12 02:29:23,232 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal57.c [2023-11-12 02:29:23,256 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:29:23,257 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:29:23,317 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:29:23,324 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=LoopHeads, 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;@d639ebf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:29:23,325 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:29:23,329 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) [2023-11-12 02:29:23,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-12 02:29:23,337 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:23,338 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:29:23,339 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:23,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:23,346 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2023-11-12 02:29:23,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:29:23,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64291103] [2023-11-12 02:29:23,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:23,364 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 [2023-11-12 02:29:23,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:29:23,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:29:23,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:29:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:23,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-12 02:29:23,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:23,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:23,856 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:29:23,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:29:23,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64291103] [2023-11-12 02:29:23,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64291103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:23,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:23,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:29:23,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754187932] [2023-11-12 02:29:23,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:23,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:29:23,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:29:23,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:29:23,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:29:23,905 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) [2023-11-12 02:29:23,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:23,988 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2023-11-12 02:29:23,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:29:23,990 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 [2023-11-12 02:29:23,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:24,000 INFO L225 Difference]: With dead ends: 19 [2023-11-12 02:29:24,001 INFO L226 Difference]: Without dead ends: 10 [2023-11-12 02:29:24,005 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 [2023-11-12 02:29:24,011 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 [2023-11-12 02:29:24,014 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] [2023-11-12 02:29:24,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-12 02:29:24,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2023-11-12 02:29:24,064 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) [2023-11-12 02:29:24,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-11-12 02:29:24,066 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2023-11-12 02:29:24,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:24,066 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-11-12 02:29:24,067 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) [2023-11-12 02:29:24,067 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-11-12 02:29:24,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 02:29:24,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:24,068 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:24,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/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)] Ended with exit code 0 [2023-11-12 02:29:24,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:29:24,281 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:24,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:24,282 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2023-11-12 02:29:24,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:29:24,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270299136] [2023-11-12 02:29:24,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:24,284 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 [2023-11-12 02:29:24,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:29:24,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:29:24,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:29:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:24,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-12 02:29:24,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:25,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:25,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:29:27,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:27,013 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-12 02:29:27,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270299136] [2023-11-12 02:29:27,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270299136] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:29:27,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:29:27,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-12 02:29:27,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573523434] [2023-11-12 02:29:27,014 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:29:27,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:29:27,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-12 02:29:27,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:29:27,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:29:27,017 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) [2023-11-12 02:29:27,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:29:27,160 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2023-11-12 02:29:27,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:29:27,161 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 [2023-11-12 02:29:27,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:29:27,161 INFO L225 Difference]: With dead ends: 15 [2023-11-12 02:29:27,161 INFO L226 Difference]: Without dead ends: 13 [2023-11-12 02:29:27,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:29:27,163 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:29:27,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 17 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:29:27,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-11-12 02:29:27,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2023-11-12 02:29:27,168 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) [2023-11-12 02:29:27,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-11-12 02:29:27,169 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2023-11-12 02:29:27,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:29:27,169 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-11-12 02:29:27,170 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) [2023-11-12 02:29:27,170 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-11-12 02:29:27,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-12 02:29:27,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:29:27,171 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-12 02:29:27,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:29:27,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:29:27,383 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:29:27,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:27,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2023-11-12 02:29:27,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-12 02:29:27,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903957858] [2023-11-12 02:29:27,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:29:27,385 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 [2023-11-12 02:29:27,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/mathsat [2023-11-12 02:29:27,386 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/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) [2023-11-12 02:29:27,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f9ac91-8b78-4864-90f2-301b843aa36a/bin/uautomizer-verify-uTZkv6EMXl/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 [2023-11-12 02:29:27,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:29:27,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:29:27,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 101 conjunts are in the unsatisfiable core [2023-11-12 02:29:27,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:29:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:29,921 INFO L327 TraceCheckSpWp]: Computing backward predicates...