./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe9d78f75108492828570ec5eb222efdf0cf36e1ec4bcab23f2d45d29dbfe193 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:06:54,541 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:06:54,642 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:06:54,649 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:06:54,649 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:06:54,685 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:06:54,687 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:06:54,687 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:06:54,688 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:06:54,688 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:06:54,689 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:06:54,689 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:06:54,689 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:06:54,689 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:06:54,690 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:06:54,690 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:06:54,690 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:06:54,691 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:06:54,691 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:06:54,691 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:06:54,691 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:06:54,691 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:06:54,692 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:06:54,692 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:06:54,692 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:06:54,692 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:06:54,692 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:06:54,692 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:06:54,692 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:06:54,693 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:06:54,693 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:06:54,693 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:06:54,693 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:06:54,693 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:06:54,693 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:06:54,694 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:06:54,694 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:06:54,695 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:06:54,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:06:54,695 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:06:54,695 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:06:54,695 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:06:54,695 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:06:54,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:06:54,696 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:06:54,696 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:06:54,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:06:54,696 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E 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 -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe9d78f75108492828570ec5eb222efdf0cf36e1ec4bcab23f2d45d29dbfe193 [2024-11-14 04:06:55,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:06:55,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:06:55,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:06:55,053 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:06:55,053 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:06:55,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c Unable to find full path for "g++" [2024-11-14 04:06:56,860 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:06:57,200 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:06:57,201 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c [2024-11-14 04:06:57,226 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/data/0a9e85f85/525d5e19c0d0459d93d6af86f543a70e/FLAGe141c9d45 [2024-11-14 04:06:57,242 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/data/0a9e85f85/525d5e19c0d0459d93d6af86f543a70e [2024-11-14 04:06:57,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:06:57,245 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:06:57,246 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:06:57,246 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:06:57,250 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:06:57,251 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:06:57" (1/1) ... [2024-11-14 04:06:57,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@533828e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:57, skipping insertion in model container [2024-11-14 04:06:57,252 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:06:57" (1/1) ... [2024-11-14 04:06:57,296 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:06:57,714 WARN L250 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_b7855951-3d4b-4729-a8dd-280638f9aad1/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c[30996,31009] [2024-11-14 04:06:57,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:06:57,729 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:06:57,845 WARN L250 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_b7855951-3d4b-4729-a8dd-280638f9aad1/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c[30996,31009] [2024-11-14 04:06:57,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:06:57,870 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:06:57,872 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:57 WrapperNode [2024-11-14 04:06:57,872 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:06:57,874 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:06:57,874 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:06:57,875 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:06:57,885 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:57" (1/1) ... [2024-11-14 04:06:57,905 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:57" (1/1) ... [2024-11-14 04:06:57,969 INFO L138 Inliner]: procedures = 23, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 1021 [2024-11-14 04:06:57,970 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:06:57,970 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:06:57,970 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:06:57,970 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:06:57,979 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:57" (1/1) ... [2024-11-14 04:06:57,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:57" (1/1) ... [2024-11-14 04:06:57,984 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:57" (1/1) ... [2024-11-14 04:06:57,984 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:57" (1/1) ... [2024-11-14 04:06:58,004 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:57" (1/1) ... [2024-11-14 04:06:58,026 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:57" (1/1) ... [2024-11-14 04:06:58,033 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:57" (1/1) ... [2024-11-14 04:06:58,039 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:57" (1/1) ... [2024-11-14 04:06:58,049 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:06:58,050 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:06:58,050 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:06:58,050 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:06:58,051 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:57" (1/1) ... [2024-11-14 04:06:58,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:06:58,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:06:58,094 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:06:58,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:06:58,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:06:58,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:06:58,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:06:58,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:06:58,309 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:06:58,310 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:06:59,685 INFO L? ?]: Removed 115 outVars from TransFormulas that were not future-live. [2024-11-14 04:06:59,685 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:07:01,139 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:07:01,139 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 04:07:01,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:07:01 BoogieIcfgContainer [2024-11-14 04:07:01,140 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:07:01,142 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:07:01,142 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:07:01,147 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:07:01,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:06:57" (1/3) ... [2024-11-14 04:07:01,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4addd843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:07:01, skipping insertion in model container [2024-11-14 04:07:01,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:06:57" (2/3) ... [2024-11-14 04:07:01,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4addd843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:07:01, skipping insertion in model container [2024-11-14 04:07:01,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:07:01" (3/3) ... [2024-11-14 04:07:01,149 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c [2024-11-14 04:07:01,169 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:07:01,171 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c that has 1 procedures, 140 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 04:07:01,244 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:07:01,259 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@1510ab70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:07:01,259 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:07:01,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 138 states have (on average 1.6231884057971016) internal successors, (224), 139 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:01,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-14 04:07:01,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:07:01,277 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:07:01,278 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:07:01,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:07:01,284 INFO L85 PathProgramCache]: Analyzing trace with hash -511183900, now seen corresponding path program 1 times [2024-11-14 04:07:01,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:07:01,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462183271] [2024-11-14 04:07:01,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:07:01,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:07:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:07:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:07:07,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:07:07,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462183271] [2024-11-14 04:07:07,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462183271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:07:07,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:07:07,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:07:07,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559783787] [2024-11-14 04:07:07,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:07:07,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:07:07,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:07:07,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:07:07,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:07:07,075 INFO L87 Difference]: Start difference. First operand has 140 states, 138 states have (on average 1.6231884057971016) internal successors, (224), 139 states have internal predecessors, (224), 0 states have call successors, (0), 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 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:07,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:07:07,427 INFO L93 Difference]: Finished difference Result 180 states and 288 transitions. [2024-11-14 04:07:07,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:07:07,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2024-11-14 04:07:07,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:07:07,441 INFO L225 Difference]: With dead ends: 180 [2024-11-14 04:07:07,442 INFO L226 Difference]: Without dead ends: 158 [2024-11-14 04:07:07,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:07:07,451 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 28 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:07:07,454 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 539 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:07:07,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-14 04:07:07,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 148. [2024-11-14 04:07:07,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.6122448979591837) internal successors, (237), 147 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 237 transitions. [2024-11-14 04:07:07,509 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 237 transitions. Word has length 54 [2024-11-14 04:07:07,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:07:07,510 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 237 transitions. [2024-11-14 04:07:07,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:07,510 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 237 transitions. [2024-11-14 04:07:07,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 04:07:07,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:07:07,512 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:07:07,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:07:07,512 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:07:07,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:07:07,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1264964674, now seen corresponding path program 1 times [2024-11-14 04:07:07,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:07:07,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268779288] [2024-11-14 04:07:07,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:07:07,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:07:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:07:10,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:07:10,181 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:07:10,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268779288] [2024-11-14 04:07:10,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268779288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:07:10,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:07:10,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:07:10,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920125559] [2024-11-14 04:07:10,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:07:10,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:07:10,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:07:10,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:07:10,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:07:10,186 INFO L87 Difference]: Start difference. First operand 148 states and 237 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:10,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:07:10,401 INFO L93 Difference]: Finished difference Result 180 states and 285 transitions. [2024-11-14 04:07:10,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:07:10,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-11-14 04:07:10,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:07:10,404 INFO L225 Difference]: With dead ends: 180 [2024-11-14 04:07:10,408 INFO L226 Difference]: Without dead ends: 160 [2024-11-14 04:07:10,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:07:10,409 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 24 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:07:10,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 385 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:07:10,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-14 04:07:10,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 148. [2024-11-14 04:07:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.6054421768707483) internal successors, (236), 147 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:10,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 236 transitions. [2024-11-14 04:07:10,423 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 236 transitions. Word has length 55 [2024-11-14 04:07:10,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:07:10,423 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 236 transitions. [2024-11-14 04:07:10,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:10,424 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 236 transitions. [2024-11-14 04:07:10,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 04:07:10,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:07:10,425 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:07:10,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:07:10,426 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:07:10,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:07:10,426 INFO L85 PathProgramCache]: Analyzing trace with hash 496447373, now seen corresponding path program 1 times [2024-11-14 04:07:10,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:07:10,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274778281] [2024-11-14 04:07:10,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:07:10,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:07:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:07:12,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:07:12,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:07:12,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274778281] [2024-11-14 04:07:12,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274778281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:07:12,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:07:12,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:07:12,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034796977] [2024-11-14 04:07:12,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:07:12,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:07:12,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:07:12,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:07:12,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:07:12,919 INFO L87 Difference]: Start difference. First operand 148 states and 236 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:13,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:07:13,193 INFO L93 Difference]: Finished difference Result 180 states and 284 transitions. [2024-11-14 04:07:13,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:07:13,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-14 04:07:13,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:07:13,196 INFO L225 Difference]: With dead ends: 180 [2024-11-14 04:07:13,196 INFO L226 Difference]: Without dead ends: 160 [2024-11-14 04:07:13,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:07:13,197 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 22 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:07:13,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 552 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:07:13,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-14 04:07:13,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 148. [2024-11-14 04:07:13,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.598639455782313) internal successors, (235), 147 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:13,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 235 transitions. [2024-11-14 04:07:13,215 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 235 transitions. Word has length 56 [2024-11-14 04:07:13,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:07:13,216 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 235 transitions. [2024-11-14 04:07:13,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:13,216 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 235 transitions. [2024-11-14 04:07:13,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-14 04:07:13,217 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:07:13,218 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:07:13,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 04:07:13,218 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:07:13,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:07:13,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1847300725, now seen corresponding path program 1 times [2024-11-14 04:07:13,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:07:13,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109508667] [2024-11-14 04:07:13,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:07:13,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:07:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:07:15,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:07:15,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:07:15,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109508667] [2024-11-14 04:07:15,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109508667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:07:15,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:07:15,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:07:15,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224126388] [2024-11-14 04:07:15,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:07:15,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:07:15,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:07:15,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:07:15,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:07:15,502 INFO L87 Difference]: Start difference. First operand 148 states and 235 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:15,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:07:15,711 INFO L93 Difference]: Finished difference Result 180 states and 283 transitions. [2024-11-14 04:07:15,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:07:15,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2024-11-14 04:07:15,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:07:15,716 INFO L225 Difference]: With dead ends: 180 [2024-11-14 04:07:15,716 INFO L226 Difference]: Without dead ends: 160 [2024-11-14 04:07:15,716 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:07:15,717 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 20 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:07:15,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 383 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:07:15,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-14 04:07:15,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 148. [2024-11-14 04:07:15,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.5918367346938775) internal successors, (234), 147 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:15,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 234 transitions. [2024-11-14 04:07:15,729 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 234 transitions. Word has length 57 [2024-11-14 04:07:15,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:07:15,730 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 234 transitions. [2024-11-14 04:07:15,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:15,730 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 234 transitions. [2024-11-14 04:07:15,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-14 04:07:15,732 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:07:15,732 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:07:15,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 04:07:15,732 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:07:15,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:07:15,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1483595978, now seen corresponding path program 1 times [2024-11-14 04:07:15,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:07:15,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536857394] [2024-11-14 04:07:15,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:07:15,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:07:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:07:17,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:07:17,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:07:17,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536857394] [2024-11-14 04:07:17,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536857394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:07:17,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:07:17,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:07:17,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302773678] [2024-11-14 04:07:17,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:07:17,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:07:17,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:07:17,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:07:17,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:07:17,795 INFO L87 Difference]: Start difference. First operand 148 states and 234 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:18,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:07:18,000 INFO L93 Difference]: Finished difference Result 180 states and 282 transitions. [2024-11-14 04:07:18,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:07:18,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2024-11-14 04:07:18,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:07:18,002 INFO L225 Difference]: With dead ends: 180 [2024-11-14 04:07:18,002 INFO L226 Difference]: Without dead ends: 160 [2024-11-14 04:07:18,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:07:18,003 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 18 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:07:18,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 552 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:07:18,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-14 04:07:18,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 148. [2024-11-14 04:07:18,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.5850340136054422) internal successors, (233), 147 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:18,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 233 transitions. [2024-11-14 04:07:18,015 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 233 transitions. Word has length 58 [2024-11-14 04:07:18,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:07:18,015 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 233 transitions. [2024-11-14 04:07:18,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:18,016 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 233 transitions. [2024-11-14 04:07:18,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-14 04:07:18,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:07:18,017 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:07:18,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 04:07:18,017 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:07:18,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:07:18,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1283895554, now seen corresponding path program 1 times [2024-11-14 04:07:18,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:07:18,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263402770] [2024-11-14 04:07:18,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:07:18,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:07:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:07:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:07:20,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:07:20,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263402770] [2024-11-14 04:07:20,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263402770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:07:20,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:07:20,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:07:20,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734385023] [2024-11-14 04:07:20,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:07:20,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:07:20,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:07:20,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:07:20,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:07:20,406 INFO L87 Difference]: Start difference. First operand 148 states and 233 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:20,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:07:20,591 INFO L93 Difference]: Finished difference Result 178 states and 278 transitions. [2024-11-14 04:07:20,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:07:20,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2024-11-14 04:07:20,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:07:20,593 INFO L225 Difference]: With dead ends: 178 [2024-11-14 04:07:20,595 INFO L226 Difference]: Without dead ends: 158 [2024-11-14 04:07:20,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:07:20,596 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 15 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:07:20,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 377 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:07:20,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-14 04:07:20,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 149. [2024-11-14 04:07:20,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.5810810810810811) internal successors, (234), 148 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:20,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 234 transitions. [2024-11-14 04:07:20,609 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 234 transitions. Word has length 60 [2024-11-14 04:07:20,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:07:20,610 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 234 transitions. [2024-11-14 04:07:20,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:20,610 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 234 transitions. [2024-11-14 04:07:20,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-14 04:07:20,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:07:20,612 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:07:20,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 04:07:20,617 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:07:20,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:07:20,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1234100926, now seen corresponding path program 1 times [2024-11-14 04:07:20,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:07:20,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318271155] [2024-11-14 04:07:20,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:07:20,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:07:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:07:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:07:22,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:07:22,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318271155] [2024-11-14 04:07:22,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318271155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:07:22,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:07:22,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:07:22,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398633149] [2024-11-14 04:07:22,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:07:22,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:07:22,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:07:22,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:07:22,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:07:22,719 INFO L87 Difference]: Start difference. First operand 149 states and 234 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:07:22,964 INFO L93 Difference]: Finished difference Result 179 states and 279 transitions. [2024-11-14 04:07:22,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:07:22,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2024-11-14 04:07:22,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:07:22,966 INFO L225 Difference]: With dead ends: 179 [2024-11-14 04:07:22,966 INFO L226 Difference]: Without dead ends: 159 [2024-11-14 04:07:22,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:07:22,967 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 12 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:07:22,967 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 564 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:07:22,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-14 04:07:22,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 151. [2024-11-14 04:07:22,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.5666666666666667) internal successors, (235), 150 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:22,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 235 transitions. [2024-11-14 04:07:22,973 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 235 transitions. Word has length 61 [2024-11-14 04:07:22,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:07:22,975 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 235 transitions. [2024-11-14 04:07:22,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:22,975 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 235 transitions. [2024-11-14 04:07:22,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-14 04:07:22,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:07:22,980 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:07:22,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 04:07:22,981 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:07:22,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:07:22,981 INFO L85 PathProgramCache]: Analyzing trace with hash 950016072, now seen corresponding path program 1 times [2024-11-14 04:07:22,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:07:22,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306374557] [2024-11-14 04:07:22,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:07:22,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:07:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:07:25,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:07:25,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:07:25,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306374557] [2024-11-14 04:07:25,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306374557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:07:25,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:07:25,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:07:25,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548471450] [2024-11-14 04:07:25,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:07:25,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:07:25,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:07:25,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:07:25,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:07:25,481 INFO L87 Difference]: Start difference. First operand 151 states and 235 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:25,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:07:25,696 INFO L93 Difference]: Finished difference Result 179 states and 276 transitions. [2024-11-14 04:07:25,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:07:25,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2024-11-14 04:07:25,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:07:25,698 INFO L225 Difference]: With dead ends: 179 [2024-11-14 04:07:25,699 INFO L226 Difference]: Without dead ends: 159 [2024-11-14 04:07:25,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:07:25,700 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 7 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:07:25,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 554 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:07:25,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-14 04:07:25,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 152. [2024-11-14 04:07:25,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.5629139072847682) internal successors, (236), 151 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:25,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 236 transitions. [2024-11-14 04:07:25,709 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 236 transitions. Word has length 63 [2024-11-14 04:07:25,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:07:25,710 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 236 transitions. [2024-11-14 04:07:25,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:25,710 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 236 transitions. [2024-11-14 04:07:25,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-14 04:07:25,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:07:25,711 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:07:25,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 04:07:25,711 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:07:25,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:07:25,712 INFO L85 PathProgramCache]: Analyzing trace with hash -621613437, now seen corresponding path program 1 times [2024-11-14 04:07:25,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:07:25,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850213728] [2024-11-14 04:07:25,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:07:25,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:07:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:07:27,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:07:27,429 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:07:27,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850213728] [2024-11-14 04:07:27,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850213728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:07:27,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:07:27,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:07:27,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387973090] [2024-11-14 04:07:27,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:07:27,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:07:27,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:07:27,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:07:27,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:07:27,431 INFO L87 Difference]: Start difference. First operand 152 states and 236 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:27,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:07:27,657 INFO L93 Difference]: Finished difference Result 181 states and 279 transitions. [2024-11-14 04:07:27,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:07:27,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-14 04:07:27,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:07:27,660 INFO L225 Difference]: With dead ends: 181 [2024-11-14 04:07:27,661 INFO L226 Difference]: Without dead ends: 161 [2024-11-14 04:07:27,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:07:27,661 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 10 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:07:27,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 748 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:07:27,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-14 04:07:27,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 155. [2024-11-14 04:07:27,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.5454545454545454) internal successors, (238), 154 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:27,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 238 transitions. [2024-11-14 04:07:27,671 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 238 transitions. Word has length 64 [2024-11-14 04:07:27,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:07:27,672 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 238 transitions. [2024-11-14 04:07:27,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:07:27,672 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 238 transitions. [2024-11-14 04:07:27,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-14 04:07:27,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:07:27,673 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:07:27,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-14 04:07:27,673 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:07:27,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:07:27,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1505888410, now seen corresponding path program 1 times [2024-11-14 04:07:27,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:07:27,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208872908] [2024-11-14 04:07:27,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:07:27,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:07:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:07:33,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:07:33,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:07:33,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208872908] [2024-11-14 04:07:33,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208872908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:07:33,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516530356] [2024-11-14 04:07:33,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:07:33,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:07:33,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:07:33,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:07:33,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:07:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:07:34,427 INFO L255 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 04:07:34,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:08:00,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:08:00,631 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:14:17,624 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-14 04:14:17,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2024-11-14 04:14:17,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2024-11-14 04:14:17,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1247155750] [2024-11-14 04:14:17,644 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2024-11-14 04:14:17,644 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:14:17,647 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:14:17,652 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:14:17,653 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:14:17,751 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:326) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:220) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:447) at java.base/java.io.OutputStream.write(OutputStream.java:167) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:125) at java.base/java.io.BufferedOutputStream.implFlush(BufferedOutputStream.java:252) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:246) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:412) at java.base/sun.nio.cs.StreamEncoder.lockedFlush(StreamEncoder.java:214) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:201) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:262) at java.base/java.io.BufferedWriter.implFlush(BufferedWriter.java:372) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:359) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 44 more [2024-11-14 04:14:17,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:14:17,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2024-11-14 04:14:17,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343590082] [2024-11-14 04:14:17,759 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 04:14:17,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:14:17,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:14:17,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:14:17,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:14:17,762 INFO L87 Difference]: Start difference. First operand 155 states and 238 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:17,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:14:17,764 INFO L432 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:17,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:14:17,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 04:14:17,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:14:17,971 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:278) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1708) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:447) at java.base/java.io.OutputStream.write(OutputStream.java:167) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:125) at java.base/java.io.BufferedOutputStream.implFlush(BufferedOutputStream.java:252) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:246) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:412) at java.base/sun.nio.cs.StreamEncoder.lockedFlush(StreamEncoder.java:214) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:201) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:262) at java.base/java.io.BufferedWriter.implFlush(BufferedWriter.java:372) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:359) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2024-11-14 04:14:17,974 INFO L158 Benchmark]: Toolchain (without parser) took 440729.50ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 989.9MB). Free memory was 116.8MB in the beginning and 713.6MB in the end (delta: -596.8MB). Peak memory consumption was 391.7MB. Max. memory is 16.1GB. [2024-11-14 04:14:17,974 INFO L158 Benchmark]: CDTParser took 1.07ms. Allocated memory is still 142.6MB. Free memory is still 80.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:14:17,975 INFO L158 Benchmark]: CACSL2BoogieTranslator took 627.34ms. Allocated memory is still 142.6MB. Free memory was 116.8MB in the beginning and 92.4MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-14 04:14:17,975 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.01ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 87.2MB in the end (delta: 4.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:14:17,975 INFO L158 Benchmark]: Boogie Preprocessor took 79.20ms. Allocated memory is still 142.6MB. Free memory was 87.2MB in the beginning and 82.9MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 04:14:17,976 INFO L158 Benchmark]: RCFGBuilder took 3090.08ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 82.9MB in the beginning and 339.8MB in the end (delta: -256.9MB). Peak memory consumption was 223.2MB. Max. memory is 16.1GB. [2024-11-14 04:14:17,976 INFO L158 Benchmark]: TraceAbstraction took 436831.56ms. Allocated memory was 427.8MB in the beginning and 1.1GB in the end (delta: 704.6MB). Free memory was 339.8MB in the beginning and 713.6MB in the end (delta: -373.8MB). Peak memory consumption was 329.3MB. Max. memory is 16.1GB. [2024-11-14 04:14:17,978 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.07ms. Allocated memory is still 142.6MB. Free memory is still 80.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 627.34ms. Allocated memory is still 142.6MB. Free memory was 116.8MB in the beginning and 92.4MB in the end (delta: 24.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 96.01ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 87.2MB in the end (delta: 4.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 79.20ms. Allocated memory is still 142.6MB. Free memory was 87.2MB in the beginning and 82.9MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 3090.08ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 82.9MB in the beginning and 339.8MB in the end (delta: -256.9MB). Peak memory consumption was 223.2MB. Max. memory is 16.1GB. * TraceAbstraction took 436831.56ms. Allocated memory was 427.8MB in the beginning and 1.1GB in the end (delta: 704.6MB). Free memory was 339.8MB in the beginning and 713.6MB in the end (delta: -373.8MB). Peak memory consumption was 329.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe9d78f75108492828570ec5eb222efdf0cf36e1ec4bcab23f2d45d29dbfe193 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:14:20,461 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:14:20,562 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-14 04:14:20,577 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:14:20,580 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:14:20,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:14:20,629 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:14:20,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:14:20,630 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:14:20,631 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:14:20,632 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:14:20,632 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:14:20,632 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:14:20,633 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:14:20,633 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:14:20,633 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:14:20,633 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:14:20,634 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:14:20,634 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:14:20,634 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:14:20,634 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:14:20,635 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:14:20,635 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:14:20,635 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:14:20,635 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 04:14:20,635 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 04:14:20,635 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:14:20,635 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 04:14:20,635 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:14:20,635 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:14:20,636 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:14:20,636 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:14:20,636 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 04:14:20,636 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:14:20,636 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:14:20,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:14:20,637 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:14:20,637 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:14:20,638 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:14:20,638 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 04:14:20,638 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 04:14:20,638 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:14:20,638 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:14:20,638 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E 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 -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe9d78f75108492828570ec5eb222efdf0cf36e1ec4bcab23f2d45d29dbfe193 [2024-11-14 04:14:20,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:14:20,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:14:20,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:14:20,952 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:14:20,953 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:14:20,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c Unable to find full path for "g++" [2024-11-14 04:14:22,907 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:14:23,259 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:14:23,263 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c [2024-11-14 04:14:23,286 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/data/83b0e6ac9/ac7f9e62873945daac16dbcb805c09c1/FLAG515a8a959 [2024-11-14 04:14:23,313 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/data/83b0e6ac9/ac7f9e62873945daac16dbcb805c09c1 [2024-11-14 04:14:23,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:14:23,319 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:14:23,321 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:14:23,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:14:23,327 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:14:23,328 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:14:23" (1/1) ... [2024-11-14 04:14:23,329 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@775a8e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:23, skipping insertion in model container [2024-11-14 04:14:23,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:14:23" (1/1) ... [2024-11-14 04:14:23,384 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:14:23,773 WARN L250 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_b7855951-3d4b-4729-a8dd-280638f9aad1/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c[30996,31009] [2024-11-14 04:14:23,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:14:23,801 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:14:23,889 WARN L250 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_b7855951-3d4b-4729-a8dd-280638f9aad1/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c[30996,31009] [2024-11-14 04:14:23,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:14:23,917 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:14:23,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:23 WrapperNode [2024-11-14 04:14:23,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:14:23,920 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:14:23,921 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:14:23,921 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:14:23,929 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:23" (1/1) ... [2024-11-14 04:14:23,952 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:23" (1/1) ... [2024-11-14 04:14:24,001 INFO L138 Inliner]: procedures = 23, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 995 [2024-11-14 04:14:24,001 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:14:24,002 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:14:24,002 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:14:24,002 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:14:24,009 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:23" (1/1) ... [2024-11-14 04:14:24,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:23" (1/1) ... [2024-11-14 04:14:24,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:23" (1/1) ... [2024-11-14 04:14:24,016 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:23" (1/1) ... [2024-11-14 04:14:24,042 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:23" (1/1) ... [2024-11-14 04:14:24,063 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:23" (1/1) ... [2024-11-14 04:14:24,070 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:23" (1/1) ... [2024-11-14 04:14:24,079 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:23" (1/1) ... [2024-11-14 04:14:24,089 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:14:24,090 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:14:24,090 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:14:24,091 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:14:24,092 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:23" (1/1) ... [2024-11-14 04:14:24,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:14:24,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:14:24,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:14:24,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:14:24,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:14:24,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 04:14:24,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:14:24,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:14:24,369 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:14:24,372 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:14:26,123 INFO L? ?]: Removed 115 outVars from TransFormulas that were not future-live. [2024-11-14 04:14:26,123 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:14:26,145 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:14:26,145 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 04:14:26,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:14:26 BoogieIcfgContainer [2024-11-14 04:14:26,146 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:14:26,151 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:14:26,151 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:14:26,156 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:14:26,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:14:23" (1/3) ... [2024-11-14 04:14:26,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b2a823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:14:26, skipping insertion in model container [2024-11-14 04:14:26,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:14:23" (2/3) ... [2024-11-14 04:14:26,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b2a823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:14:26, skipping insertion in model container [2024-11-14 04:14:26,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:14:26" (3/3) ... [2024-11-14 04:14:26,159 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c [2024-11-14 04:14:26,178 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:14:26,181 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_opt-floodmax.4.ufo.BOUNDED-8.pals.c that has 1 procedures, 300 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 04:14:26,290 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:14:26,311 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@12505c4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:14:26,311 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:14:26,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 300 states, 298 states have (on average 1.832214765100671) internal successors, (546), 299 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:26,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-14 04:14:26,338 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:26,339 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:14:26,340 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:14:26,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:26,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1582184628, now seen corresponding path program 1 times [2024-11-14 04:14:26,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:14:26,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426307046] [2024-11-14 04:14:26,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:26,368 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 [2024-11-14 04:14:26,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:14:26,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 04:14:26,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:14:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:26,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-14 04:14:26,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:14:26,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:14:26,758 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:14:26,758 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:14:26,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426307046] [2024-11-14 04:14:26,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426307046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:14:26,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:14:26,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:14:26,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569874914] [2024-11-14 04:14:26,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:14:26,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 04:14:26,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:14:26,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 04:14:26,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:14:26,798 INFO L87 Difference]: Start difference. First operand has 300 states, 298 states have (on average 1.832214765100671) internal successors, (546), 299 states have internal predecessors, (546), 0 states have call successors, (0), 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 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:26,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:14:26,861 INFO L93 Difference]: Finished difference Result 405 states and 730 transitions. [2024-11-14 04:14:26,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 04:14:26,866 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2024-11-14 04:14:26,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:14:26,882 INFO L225 Difference]: With dead ends: 405 [2024-11-14 04:14:26,882 INFO L226 Difference]: Without dead ends: 296 [2024-11-14 04:14:26,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:14:26,892 INFO L432 NwaCegarLoop]: 543 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:26,893 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:14:26,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-11-14 04:14:26,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2024-11-14 04:14:26,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.8271186440677967) internal successors, (539), 295 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:26,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 539 transitions. [2024-11-14 04:14:26,958 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 539 transitions. Word has length 77 [2024-11-14 04:14:26,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:14:26,959 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 539 transitions. [2024-11-14 04:14:26,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:26,959 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 539 transitions. [2024-11-14 04:14:26,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-14 04:14:26,963 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:26,963 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:14:26,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:14:27,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:14:27,167 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:14:27,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:27,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1448171122, now seen corresponding path program 1 times [2024-11-14 04:14:27,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:14:27,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425641216] [2024-11-14 04:14:27,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:27,169 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 [2024-11-14 04:14:27,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:14:27,172 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 04:14:27,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:14:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:27,420 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:14:27,426 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:14:27,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:14:27,507 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:14:27,507 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:14:27,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425641216] [2024-11-14 04:14:27,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425641216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:14:27,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:14:27,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:14:27,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501465166] [2024-11-14 04:14:27,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:14:27,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:14:27,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:14:27,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:14:27,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:14:27,511 INFO L87 Difference]: Start difference. First operand 296 states and 539 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:27,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:14:27,736 INFO L93 Difference]: Finished difference Result 400 states and 720 transitions. [2024-11-14 04:14:27,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:14:27,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2024-11-14 04:14:27,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:14:27,739 INFO L225 Difference]: With dead ends: 400 [2024-11-14 04:14:27,739 INFO L226 Difference]: Without dead ends: 296 [2024-11-14 04:14:27,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:14:27,741 INFO L432 NwaCegarLoop]: 537 mSDtfsCounter, 0 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:27,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2097 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:14:27,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-11-14 04:14:27,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2024-11-14 04:14:27,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.6711864406779662) internal successors, (493), 295 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:27,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 493 transitions. [2024-11-14 04:14:27,775 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 493 transitions. Word has length 77 [2024-11-14 04:14:27,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:14:27,776 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 493 transitions. [2024-11-14 04:14:27,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:27,776 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 493 transitions. [2024-11-14 04:14:27,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-14 04:14:27,784 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:27,784 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:14:27,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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)] Ended with exit code 0 [2024-11-14 04:14:27,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:14:27,991 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:14:27,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:27,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1227763112, now seen corresponding path program 1 times [2024-11-14 04:14:27,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:14:27,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596595252] [2024-11-14 04:14:27,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:27,993 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 [2024-11-14 04:14:27,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:14:27,999 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 04:14:28,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:14:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:28,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:14:28,244 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:14:28,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:14:28,394 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:14:28,394 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:14:28,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596595252] [2024-11-14 04:14:28,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596595252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:14:28,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:14:28,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:14:28,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658720429] [2024-11-14 04:14:28,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:14:28,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:14:28,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:14:28,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:14:28,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:14:28,397 INFO L87 Difference]: Start difference. First operand 296 states and 493 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:28,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:14:28,469 INFO L93 Difference]: Finished difference Result 484 states and 825 transitions. [2024-11-14 04:14:28,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:14:28,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2024-11-14 04:14:28,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:14:28,474 INFO L225 Difference]: With dead ends: 484 [2024-11-14 04:14:28,474 INFO L226 Difference]: Without dead ends: 384 [2024-11-14 04:14:28,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:14:28,478 INFO L432 NwaCegarLoop]: 492 mSDtfsCounter, 147 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:28,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 930 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:14:28,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-11-14 04:14:28,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 382. [2024-11-14 04:14:28,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.68503937007874) internal successors, (642), 381 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:28,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 642 transitions. [2024-11-14 04:14:28,511 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 642 transitions. Word has length 122 [2024-11-14 04:14:28,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:14:28,512 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 642 transitions. [2024-11-14 04:14:28,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:28,515 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 642 transitions. [2024-11-14 04:14:28,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-14 04:14:28,518 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:28,518 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:14:28,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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)] Ended with exit code 0 [2024-11-14 04:14:28,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:14:28,719 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:14:28,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:28,720 INFO L85 PathProgramCache]: Analyzing trace with hash -245191693, now seen corresponding path program 1 times [2024-11-14 04:14:28,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:14:28,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836134631] [2024-11-14 04:14:28,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:28,721 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 [2024-11-14 04:14:28,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:14:28,724 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 04:14:28,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (5)] Waiting until timeout for monitored process [2024-11-14 04:14:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:28,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:14:28,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:14:29,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:14:29,296 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:14:29,296 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:14:29,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836134631] [2024-11-14 04:14:29,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836134631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:14:29,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:14:29,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:14:29,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951167865] [2024-11-14 04:14:29,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:14:29,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:14:29,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:14:29,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:14:29,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:14:29,302 INFO L87 Difference]: Start difference. First operand 382 states and 642 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:29,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:14:29,482 INFO L93 Difference]: Finished difference Result 1472 states and 2443 transitions. [2024-11-14 04:14:29,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:14:29,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2024-11-14 04:14:29,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:14:29,487 INFO L225 Difference]: With dead ends: 1472 [2024-11-14 04:14:29,488 INFO L226 Difference]: Without dead ends: 1101 [2024-11-14 04:14:29,489 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:14:29,490 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 1147 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:29,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 1394 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:14:29,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2024-11-14 04:14:29,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 749. [2024-11-14 04:14:29,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 748 states have (on average 1.6697860962566844) internal successors, (1249), 748 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:29,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1249 transitions. [2024-11-14 04:14:29,526 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1249 transitions. Word has length 125 [2024-11-14 04:14:29,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:14:29,527 INFO L471 AbstractCegarLoop]: Abstraction has 749 states and 1249 transitions. [2024-11-14 04:14:29,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:29,527 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1249 transitions. [2024-11-14 04:14:29,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-14 04:14:29,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:29,535 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:14:29,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (5)] Ended with exit code 0 [2024-11-14 04:14:29,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:14:29,739 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:14:29,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:29,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1513448222, now seen corresponding path program 1 times [2024-11-14 04:14:29,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:14:29,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805217575] [2024-11-14 04:14:29,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:29,741 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 [2024-11-14 04:14:29,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:14:29,749 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 04:14:29,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (6)] Waiting until timeout for monitored process [2024-11-14 04:14:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:29,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:14:30,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:14:30,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:14:30,079 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:14:30,079 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:14:30,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805217575] [2024-11-14 04:14:30,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [805217575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:14:30,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:14:30,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:14:30,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131516030] [2024-11-14 04:14:30,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:14:30,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:14:30,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:14:30,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:14:30,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:14:30,085 INFO L87 Difference]: Start difference. First operand 749 states and 1249 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:30,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:14:30,136 INFO L93 Difference]: Finished difference Result 1110 states and 1886 transitions. [2024-11-14 04:14:30,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:14:30,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2024-11-14 04:14:30,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:14:30,143 INFO L225 Difference]: With dead ends: 1110 [2024-11-14 04:14:30,143 INFO L226 Difference]: Without dead ends: 914 [2024-11-14 04:14:30,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:14:30,147 INFO L432 NwaCegarLoop]: 625 mSDtfsCounter, 156 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:30,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 1086 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:14:30,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2024-11-14 04:14:30,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 912. [2024-11-14 04:14:30,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 911 states have (on average 1.6838638858397366) internal successors, (1534), 911 states have internal predecessors, (1534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:30,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1534 transitions. [2024-11-14 04:14:30,222 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1534 transitions. Word has length 126 [2024-11-14 04:14:30,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:14:30,223 INFO L471 AbstractCegarLoop]: Abstraction has 912 states and 1534 transitions. [2024-11-14 04:14:30,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:30,224 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1534 transitions. [2024-11-14 04:14:30,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-14 04:14:30,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:30,226 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:14:30,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (6)] Ended with exit code 0 [2024-11-14 04:14:30,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:14:30,427 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:14:30,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:30,431 INFO L85 PathProgramCache]: Analyzing trace with hash -902077537, now seen corresponding path program 1 times [2024-11-14 04:14:30,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:14:30,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454191717] [2024-11-14 04:14:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:30,432 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 [2024-11-14 04:14:30,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:14:30,439 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 04:14:30,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (7)] Waiting until timeout for monitored process [2024-11-14 04:14:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:30,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:14:30,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:14:30,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:14:30,990 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:14:30,990 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:14:30,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454191717] [2024-11-14 04:14:30,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454191717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:14:30,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:14:30,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:14:30,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613469737] [2024-11-14 04:14:30,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:14:30,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:14:30,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:14:30,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:14:30,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:14:30,993 INFO L87 Difference]: Start difference. First operand 912 states and 1534 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:31,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:14:31,170 INFO L93 Difference]: Finished difference Result 3398 states and 5647 transitions. [2024-11-14 04:14:31,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:14:31,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2024-11-14 04:14:31,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:14:31,181 INFO L225 Difference]: With dead ends: 3398 [2024-11-14 04:14:31,181 INFO L226 Difference]: Without dead ends: 2498 [2024-11-14 04:14:31,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:14:31,185 INFO L432 NwaCegarLoop]: 482 mSDtfsCounter, 1142 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:31,188 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 1395 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:14:31,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2498 states. [2024-11-14 04:14:31,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2498 to 1796. [2024-11-14 04:14:31,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1796 states, 1795 states have (on average 1.6701949860724234) internal successors, (2998), 1795 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:31,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 2998 transitions. [2024-11-14 04:14:31,285 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 2998 transitions. Word has length 126 [2024-11-14 04:14:31,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:14:31,286 INFO L471 AbstractCegarLoop]: Abstraction has 1796 states and 2998 transitions. [2024-11-14 04:14:31,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:31,286 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 2998 transitions. [2024-11-14 04:14:31,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-14 04:14:31,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:31,295 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:14:31,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (7)] Forceful destruction successful, exit code 0 [2024-11-14 04:14:31,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:14:31,497 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:14:31,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:31,498 INFO L85 PathProgramCache]: Analyzing trace with hash -641912947, now seen corresponding path program 1 times [2024-11-14 04:14:31,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:14:31,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241355802] [2024-11-14 04:14:31,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:31,499 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 [2024-11-14 04:14:31,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:14:31,503 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 04:14:31,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (8)] Waiting until timeout for monitored process [2024-11-14 04:14:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:31,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:14:31,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:14:32,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:14:32,090 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:14:32,091 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:14:32,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241355802] [2024-11-14 04:14:32,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241355802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:14:32,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:14:32,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:14:32,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335114444] [2024-11-14 04:14:32,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:14:32,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:14:32,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:14:32,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:14:32,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:14:32,094 INFO L87 Difference]: Start difference. First operand 1796 states and 2998 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:32,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:14:32,258 INFO L93 Difference]: Finished difference Result 5313 states and 8863 transitions. [2024-11-14 04:14:32,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:14:32,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2024-11-14 04:14:32,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:14:32,273 INFO L225 Difference]: With dead ends: 5313 [2024-11-14 04:14:32,273 INFO L226 Difference]: Without dead ends: 3544 [2024-11-14 04:14:32,277 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:14:32,278 INFO L432 NwaCegarLoop]: 489 mSDtfsCounter, 383 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:32,278 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 1408 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:14:32,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3544 states. [2024-11-14 04:14:32,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3544 to 3542. [2024-11-14 04:14:32,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 3541 states have (on average 1.6568765885343124) internal successors, (5867), 3541 states have internal predecessors, (5867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:32,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 5867 transitions. [2024-11-14 04:14:32,417 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 5867 transitions. Word has length 127 [2024-11-14 04:14:32,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:14:32,417 INFO L471 AbstractCegarLoop]: Abstraction has 3542 states and 5867 transitions. [2024-11-14 04:14:32,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:32,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 5867 transitions. [2024-11-14 04:14:32,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-14 04:14:32,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:32,424 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:14:32,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (8)] Ended with exit code 0 [2024-11-14 04:14:32,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:14:32,627 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:14:32,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:32,628 INFO L85 PathProgramCache]: Analyzing trace with hash -640014331, now seen corresponding path program 1 times [2024-11-14 04:14:32,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:14:32,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345453032] [2024-11-14 04:14:32,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:32,629 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 [2024-11-14 04:14:32,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:14:32,631 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 04:14:32,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (9)] Waiting until timeout for monitored process [2024-11-14 04:14:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:32,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:14:32,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:14:33,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:14:33,009 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:14:33,009 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:14:33,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345453032] [2024-11-14 04:14:33,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345453032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:14:33,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:14:33,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:14:33,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341207120] [2024-11-14 04:14:33,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:14:33,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:14:33,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:14:33,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:14:33,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:14:33,015 INFO L87 Difference]: Start difference. First operand 3542 states and 5867 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:33,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:14:33,108 INFO L93 Difference]: Finished difference Result 7422 states and 12585 transitions. [2024-11-14 04:14:33,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:14:33,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2024-11-14 04:14:33,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:14:33,130 INFO L225 Difference]: With dead ends: 7422 [2024-11-14 04:14:33,130 INFO L226 Difference]: Without dead ends: 5368 [2024-11-14 04:14:33,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:14:33,134 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 145 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:33,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 947 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:14:33,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5368 states. [2024-11-14 04:14:33,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5368 to 5366. [2024-11-14 04:14:33,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5366 states, 5365 states have (on average 1.678098788443616) internal successors, (9003), 5365 states have internal predecessors, (9003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:33,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5366 states to 5366 states and 9003 transitions. [2024-11-14 04:14:33,354 INFO L78 Accepts]: Start accepts. Automaton has 5366 states and 9003 transitions. Word has length 128 [2024-11-14 04:14:33,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:14:33,354 INFO L471 AbstractCegarLoop]: Abstraction has 5366 states and 9003 transitions. [2024-11-14 04:14:33,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:33,355 INFO L276 IsEmpty]: Start isEmpty. Operand 5366 states and 9003 transitions. [2024-11-14 04:14:33,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-14 04:14:33,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:33,361 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:14:33,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (9)] Ended with exit code 0 [2024-11-14 04:14:33,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:14:33,564 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:14:33,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:33,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1432796009, now seen corresponding path program 1 times [2024-11-14 04:14:33,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:14:33,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356556719] [2024-11-14 04:14:33,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:33,565 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 [2024-11-14 04:14:33,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:14:33,569 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 04:14:33,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (10)] Waiting until timeout for monitored process [2024-11-14 04:14:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:33,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:14:33,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:14:34,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:14:34,178 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:14:34,178 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:14:34,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356556719] [2024-11-14 04:14:34,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356556719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:14:34,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:14:34,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:14:34,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437257011] [2024-11-14 04:14:34,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:14:34,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:14:34,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:14:34,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:14:34,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:14:34,180 INFO L87 Difference]: Start difference. First operand 5366 states and 9003 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:34,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:14:34,487 INFO L93 Difference]: Finished difference Result 18274 states and 30297 transitions. [2024-11-14 04:14:34,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:14:34,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2024-11-14 04:14:34,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:14:34,554 INFO L225 Difference]: With dead ends: 18274 [2024-11-14 04:14:34,555 INFO L226 Difference]: Without dead ends: 13044 [2024-11-14 04:14:34,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:14:34,569 INFO L432 NwaCegarLoop]: 499 mSDtfsCounter, 1040 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:34,569 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 1401 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:14:34,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13044 states. [2024-11-14 04:14:34,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13044 to 10530. [2024-11-14 04:14:34,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10530 states, 10529 states have (on average 1.665400322917656) internal successors, (17535), 10529 states have internal predecessors, (17535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:34,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10530 states to 10530 states and 17535 transitions. [2024-11-14 04:14:34,997 INFO L78 Accepts]: Start accepts. Automaton has 10530 states and 17535 transitions. Word has length 131 [2024-11-14 04:14:34,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:14:34,998 INFO L471 AbstractCegarLoop]: Abstraction has 10530 states and 17535 transitions. [2024-11-14 04:14:34,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:34,998 INFO L276 IsEmpty]: Start isEmpty. Operand 10530 states and 17535 transitions. [2024-11-14 04:14:35,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-14 04:14:35,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:35,010 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:14:35,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (10)] Ended with exit code 0 [2024-11-14 04:14:35,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:14:35,214 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:14:35,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:35,215 INFO L85 PathProgramCache]: Analyzing trace with hash -329754692, now seen corresponding path program 1 times [2024-11-14 04:14:35,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:14:35,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [383820434] [2024-11-14 04:14:35,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:35,216 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 [2024-11-14 04:14:35,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:14:35,218 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 04:14:35,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (11)] Waiting until timeout for monitored process [2024-11-14 04:14:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:35,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:14:35,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:14:35,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:14:35,826 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:14:35,826 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:14:35,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [383820434] [2024-11-14 04:14:35,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [383820434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:14:35,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:14:35,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:14:35,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727788792] [2024-11-14 04:14:35,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:14:35,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:14:35,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:14:35,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:14:35,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:14:35,829 INFO L87 Difference]: Start difference. First operand 10530 states and 17535 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:36,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:14:36,380 INFO L93 Difference]: Finished difference Result 36104 states and 59377 transitions. [2024-11-14 04:14:36,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:14:36,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2024-11-14 04:14:36,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:14:36,467 INFO L225 Difference]: With dead ends: 36104 [2024-11-14 04:14:36,468 INFO L226 Difference]: Without dead ends: 25703 [2024-11-14 04:14:36,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:14:36,490 INFO L432 NwaCegarLoop]: 494 mSDtfsCounter, 1056 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:36,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1056 Valid, 1376 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:14:36,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25703 states. [2024-11-14 04:14:37,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25703 to 20725. [2024-11-14 04:14:37,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20725 states, 20724 states have (on average 1.6493437560316542) internal successors, (34181), 20724 states have internal predecessors, (34181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:37,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20725 states to 20725 states and 34181 transitions. [2024-11-14 04:14:37,377 INFO L78 Accepts]: Start accepts. Automaton has 20725 states and 34181 transitions. Word has length 132 [2024-11-14 04:14:37,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:14:37,378 INFO L471 AbstractCegarLoop]: Abstraction has 20725 states and 34181 transitions. [2024-11-14 04:14:37,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:37,379 INFO L276 IsEmpty]: Start isEmpty. Operand 20725 states and 34181 transitions. [2024-11-14 04:14:37,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-14 04:14:37,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:37,397 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:14:37,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (11)] Ended with exit code 0 [2024-11-14 04:14:37,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:14:37,601 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:14:37,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:37,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2063721997, now seen corresponding path program 1 times [2024-11-14 04:14:37,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:14:37,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441690815] [2024-11-14 04:14:37,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:37,603 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 [2024-11-14 04:14:37,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:14:37,605 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 04:14:37,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (12)] Waiting until timeout for monitored process [2024-11-14 04:14:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:37,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:14:37,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:14:37,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:14:37,905 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:14:37,905 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:14:37,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441690815] [2024-11-14 04:14:37,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441690815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:14:37,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:14:37,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:14:37,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072760424] [2024-11-14 04:14:37,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:14:37,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:14:37,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:14:37,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:14:37,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:14:37,908 INFO L87 Difference]: Start difference. First operand 20725 states and 34181 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:38,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:14:38,239 INFO L93 Difference]: Finished difference Result 35513 states and 59335 transitions. [2024-11-14 04:14:38,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:14:38,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2024-11-14 04:14:38,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:14:38,308 INFO L225 Difference]: With dead ends: 35513 [2024-11-14 04:14:38,308 INFO L226 Difference]: Without dead ends: 27463 [2024-11-14 04:14:38,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:14:38,320 INFO L432 NwaCegarLoop]: 617 mSDtfsCounter, 146 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:38,321 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 1079 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:14:38,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27463 states. [2024-11-14 04:14:39,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27463 to 27461. [2024-11-14 04:14:39,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27461 states, 27460 states have (on average 1.6555353241077932) internal successors, (45461), 27460 states have internal predecessors, (45461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:39,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27461 states to 27461 states and 45461 transitions. [2024-11-14 04:14:39,140 INFO L78 Accepts]: Start accepts. Automaton has 27461 states and 45461 transitions. Word has length 133 [2024-11-14 04:14:39,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:14:39,140 INFO L471 AbstractCegarLoop]: Abstraction has 27461 states and 45461 transitions. [2024-11-14 04:14:39,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:39,141 INFO L276 IsEmpty]: Start isEmpty. Operand 27461 states and 45461 transitions. [2024-11-14 04:14:39,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-14 04:14:39,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:39,154 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:14:39,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (12)] Ended with exit code 0 [2024-11-14 04:14:39,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:14:39,357 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:14:39,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:39,358 INFO L85 PathProgramCache]: Analyzing trace with hash -155389725, now seen corresponding path program 1 times [2024-11-14 04:14:39,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:14:39,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1167252868] [2024-11-14 04:14:39,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:39,359 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 [2024-11-14 04:14:39,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:14:39,363 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 04:14:39,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (13)] Waiting until timeout for monitored process [2024-11-14 04:14:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:39,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:14:39,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:14:40,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:14:40,068 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:14:40,068 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:14:40,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1167252868] [2024-11-14 04:14:40,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1167252868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:14:40,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:14:40,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:14:40,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488881220] [2024-11-14 04:14:40,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:14:40,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:14:40,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:14:40,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:14:40,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:14:40,071 INFO L87 Difference]: Start difference. First operand 27461 states and 45461 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:40,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:14:40,732 INFO L93 Difference]: Finished difference Result 81390 states and 134605 transitions. [2024-11-14 04:14:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:14:40,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2024-11-14 04:14:40,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:14:40,903 INFO L225 Difference]: With dead ends: 81390 [2024-11-14 04:14:40,904 INFO L226 Difference]: Without dead ends: 54190 [2024-11-14 04:14:41,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:14:41,093 INFO L432 NwaCegarLoop]: 495 mSDtfsCounter, 381 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:41,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 1383 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:14:41,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54190 states. [2024-11-14 04:14:41,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54190 to 54188. [2024-11-14 04:14:42,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54188 states, 54187 states have (on average 1.6412977282374002) internal successors, (88937), 54187 states have internal predecessors, (88937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:42,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54188 states to 54188 states and 88937 transitions. [2024-11-14 04:14:42,188 INFO L78 Accepts]: Start accepts. Automaton has 54188 states and 88937 transitions. Word has length 133 [2024-11-14 04:14:42,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:14:42,188 INFO L471 AbstractCegarLoop]: Abstraction has 54188 states and 88937 transitions. [2024-11-14 04:14:42,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:42,189 INFO L276 IsEmpty]: Start isEmpty. Operand 54188 states and 88937 transitions. [2024-11-14 04:14:42,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-14 04:14:42,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:42,227 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:14:42,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (13)] Forceful destruction successful, exit code 0 [2024-11-14 04:14:42,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:14:42,428 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:14:42,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:42,429 INFO L85 PathProgramCache]: Analyzing trace with hash -879098302, now seen corresponding path program 1 times [2024-11-14 04:14:42,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:14:42,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1743151041] [2024-11-14 04:14:42,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:42,430 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 [2024-11-14 04:14:42,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:14:42,435 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 04:14:42,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (14)] Waiting until timeout for monitored process [2024-11-14 04:14:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:42,680 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:14:42,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:14:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:14:42,831 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:14:42,831 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:14:42,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1743151041] [2024-11-14 04:14:42,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1743151041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:14:42,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:14:42,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:14:42,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594117530] [2024-11-14 04:14:42,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:14:42,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:14:42,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:14:42,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:14:42,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:14:42,834 INFO L87 Difference]: Start difference. First operand 54188 states and 88937 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:43,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:14:43,877 INFO L93 Difference]: Finished difference Result 134640 states and 224299 transitions. [2024-11-14 04:14:43,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:14:43,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2024-11-14 04:14:43,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:14:44,044 INFO L225 Difference]: With dead ends: 134640 [2024-11-14 04:14:44,045 INFO L226 Difference]: Without dead ends: 91822 [2024-11-14 04:14:44,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:14:44,084 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 135 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:44,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 949 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:14:44,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91822 states. [2024-11-14 04:14:45,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91822 to 91820. [2024-11-14 04:14:46,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91820 states, 91819 states have (on average 1.6523922064060814) internal successors, (151721), 91819 states have internal predecessors, (151721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:46,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91820 states to 91820 states and 151721 transitions. [2024-11-14 04:14:46,268 INFO L78 Accepts]: Start accepts. Automaton has 91820 states and 151721 transitions. Word has length 134 [2024-11-14 04:14:46,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:14:46,269 INFO L471 AbstractCegarLoop]: Abstraction has 91820 states and 151721 transitions. [2024-11-14 04:14:46,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:46,269 INFO L276 IsEmpty]: Start isEmpty. Operand 91820 states and 151721 transitions. [2024-11-14 04:14:46,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2024-11-14 04:14:46,294 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:46,294 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:14:46,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (14)] Forceful destruction successful, exit code 0 [2024-11-14 04:14:46,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:14:46,495 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:14:46,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:46,496 INFO L85 PathProgramCache]: Analyzing trace with hash 76762239, now seen corresponding path program 1 times [2024-11-14 04:14:46,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:14:46,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966607285] [2024-11-14 04:14:46,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:46,497 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 [2024-11-14 04:14:46,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:14:46,499 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 04:14:46,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (15)] Waiting until timeout for monitored process [2024-11-14 04:14:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:46,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:14:46,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:14:47,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:14:47,177 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:14:47,177 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:14:47,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966607285] [2024-11-14 04:14:47,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966607285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:14:47,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:14:47,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:14:47,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553088149] [2024-11-14 04:14:47,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:14:47,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:14:47,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:14:47,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:14:47,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:14:47,179 INFO L87 Difference]: Start difference. First operand 91820 states and 151721 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:49,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:14:49,092 INFO L93 Difference]: Finished difference Result 289744 states and 475291 transitions. [2024-11-14 04:14:49,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:14:49,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2024-11-14 04:14:49,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:14:49,560 INFO L225 Difference]: With dead ends: 289744 [2024-11-14 04:14:49,560 INFO L226 Difference]: Without dead ends: 198862 [2024-11-14 04:14:49,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:14:49,630 INFO L432 NwaCegarLoop]: 494 mSDtfsCounter, 957 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 1351 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:49,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 1351 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:14:49,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198862 states. [2024-11-14 04:14:52,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198862 to 181068. [2024-11-14 04:14:52,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181068 states, 181067 states have (on average 1.6391335803873703) internal successors, (296793), 181067 states have internal predecessors, (296793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:53,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181068 states to 181068 states and 296793 transitions. [2024-11-14 04:14:53,248 INFO L78 Accepts]: Start accepts. Automaton has 181068 states and 296793 transitions. Word has length 137 [2024-11-14 04:14:53,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:14:53,249 INFO L471 AbstractCegarLoop]: Abstraction has 181068 states and 296793 transitions. [2024-11-14 04:14:53,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:53,249 INFO L276 IsEmpty]: Start isEmpty. Operand 181068 states and 296793 transitions. [2024-11-14 04:14:53,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-14 04:14:53,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:14:53,287 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:14:53,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (15)] Ended with exit code 0 [2024-11-14 04:14:53,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:14:53,488 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:14:53,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:14:53,488 INFO L85 PathProgramCache]: Analyzing trace with hash -2131337287, now seen corresponding path program 1 times [2024-11-14 04:14:53,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:14:53,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781867648] [2024-11-14 04:14:53,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:14:53,489 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 [2024-11-14 04:14:53,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:14:53,491 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 04:14:53,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (16)] Waiting until timeout for monitored process [2024-11-14 04:14:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:14:53,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:14:53,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:14:54,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:14:54,266 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:14:54,266 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:14:54,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781867648] [2024-11-14 04:14:54,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781867648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:14:54,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:14:54,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:14:54,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178753295] [2024-11-14 04:14:54,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:14:54,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:14:54,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:14:54,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:14:54,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:14:54,268 INFO L87 Difference]: Start difference. First operand 181068 states and 296793 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:14:57,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:14:57,570 INFO L93 Difference]: Finished difference Result 572886 states and 932173 transitions. [2024-11-14 04:14:57,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:14:57,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2024-11-14 04:14:57,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:14:58,137 INFO L225 Difference]: With dead ends: 572886 [2024-11-14 04:14:58,137 INFO L226 Difference]: Without dead ends: 393042 [2024-11-14 04:14:58,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:14:58,647 INFO L432 NwaCegarLoop]: 529 mSDtfsCounter, 986 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:14:58,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 1378 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:14:58,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393042 states. [2024-11-14 04:15:05,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393042 to 357840. [2024-11-14 04:15:05,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357840 states, 357839 states have (on average 1.6259127708271037) internal successors, (581815), 357839 states have internal predecessors, (581815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:15:06,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357840 states to 357840 states and 581815 transitions. [2024-11-14 04:15:06,080 INFO L78 Accepts]: Start accepts. Automaton has 357840 states and 581815 transitions. Word has length 138 [2024-11-14 04:15:06,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:15:06,082 INFO L471 AbstractCegarLoop]: Abstraction has 357840 states and 581815 transitions. [2024-11-14 04:15:06,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:15:06,082 INFO L276 IsEmpty]: Start isEmpty. Operand 357840 states and 581815 transitions. [2024-11-14 04:15:06,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-14 04:15:06,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:15:06,201 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:15:06,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (16)] Ended with exit code 0 [2024-11-14 04:15:06,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 [2024-11-14 04:15:06,402 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:15:06,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:15:06,402 INFO L85 PathProgramCache]: Analyzing trace with hash -2062284581, now seen corresponding path program 1 times [2024-11-14 04:15:06,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:15:06,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504494805] [2024-11-14 04:15:06,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:15:06,403 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 [2024-11-14 04:15:06,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:15:06,408 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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) [2024-11-14 04:15:06,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7855951-3d4b-4729-a8dd-280638f9aad1/bin/utaipan-verify-sOmjnqqW8E/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 (17)] Waiting until timeout for monitored process [2024-11-14 04:15:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:15:06,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:15:06,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:15:06,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:15:06,715 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:15:06,716 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:15:06,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504494805] [2024-11-14 04:15:06,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504494805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:15:06,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:15:06,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:15:06,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669895355] [2024-11-14 04:15:06,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:15:06,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:15:06,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:15:06,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:15:06,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:15:06,718 INFO L87 Difference]: Start difference. First operand 357840 states and 581815 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:15:12,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:15:12,541 INFO L93 Difference]: Finished difference Result 834772 states and 1369785 transitions. [2024-11-14 04:15:12,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:15:12,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2024-11-14 04:15:12,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:15:13,454 INFO L225 Difference]: With dead ends: 834772 [2024-11-14 04:15:13,454 INFO L226 Difference]: Without dead ends: 519122 [2024-11-14 04:15:13,626 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:15:13,628 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 142 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-14 04:15:13,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 979 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-14 04:15:13,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519122 states.