./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound5.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_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/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_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/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_54746718-119a-45e5-92eb-40313a0cb4de/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 e66935135411fbf96808f67125d08daf2aa12325c87064d554338ba4e7860b02 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:02:39,275 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:02:39,370 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:02:39,376 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:02:39,376 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:02:39,410 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:02:39,411 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:02:39,411 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:02:39,411 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:02:39,411 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:02:39,411 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:02:39,412 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:02:39,414 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:02:39,414 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:02:39,415 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:02:39,415 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:02:39,415 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:02:39,415 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:02:39,416 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:02:39,416 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:02:39,416 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:02:39,416 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:02:39,417 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:02:39,417 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:02:39,417 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:02:39,417 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:02:39,417 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:02:39,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:02:39,417 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:02:39,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:02:39,417 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:02:39,417 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:02:39,418 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:02:39,418 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:02:39,418 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:02:39,418 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:02:39,418 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:02:39,418 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:02:39,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:02:39,418 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:02:39,418 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:02:39,418 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:02:39,418 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:02:39,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:02:39,419 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:02:39,420 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:02:39,420 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:02:39,420 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_54746718-119a-45e5-92eb-40313a0cb4de/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 -> e66935135411fbf96808f67125d08daf2aa12325c87064d554338ba4e7860b02 [2024-11-14 03:02:39,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:02:39,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:02:39,768 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:02:39,771 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:02:39,771 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:02:39,773 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound5.c Unable to find full path for "g++" [2024-11-14 03:02:41,759 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:02:42,003 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:02:42,003 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound5.c [2024-11-14 03:02:42,014 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/data/ec9fc7228/ae4bcf91c0e64fb49c3fdd9e43272bd2/FLAGb5226fe1b [2024-11-14 03:02:42,030 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/data/ec9fc7228/ae4bcf91c0e64fb49c3fdd9e43272bd2 [2024-11-14 03:02:42,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:02:42,034 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:02:42,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:02:42,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:02:42,040 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:02:42,041 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:02:42" (1/1) ... [2024-11-14 03:02:42,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16933f8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:42, skipping insertion in model container [2024-11-14 03:02:42,043 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:02:42" (1/1) ... [2024-11-14 03:02:42,057 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:02:42,196 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_54746718-119a-45e5-92eb-40313a0cb4de/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound5.c[458,471] [2024-11-14 03:02:42,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:02:42,222 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:02:42,232 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_54746718-119a-45e5-92eb-40313a0cb4de/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound5.c[458,471] [2024-11-14 03:02:42,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:02:42,252 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:02:42,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:42 WrapperNode [2024-11-14 03:02:42,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:02:42,254 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:02:42,254 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:02:42,254 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:02:42,261 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:42" (1/1) ... [2024-11-14 03:02:42,267 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:42" (1/1) ... [2024-11-14 03:02:42,283 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 42 [2024-11-14 03:02:42,283 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:02:42,284 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:02:42,284 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:02:42,284 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:02:42,292 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:42" (1/1) ... [2024-11-14 03:02:42,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:42" (1/1) ... [2024-11-14 03:02:42,293 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:42" (1/1) ... [2024-11-14 03:02:42,293 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:42" (1/1) ... [2024-11-14 03:02:42,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:42" (1/1) ... [2024-11-14 03:02:42,299 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:42" (1/1) ... [2024-11-14 03:02:42,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:42" (1/1) ... [2024-11-14 03:02:42,300 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:42" (1/1) ... [2024-11-14 03:02:42,302 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:02:42,303 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:02:42,303 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:02:42,303 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:02:42,304 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:42" (1/1) ... [2024-11-14 03:02:42,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:02:42,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:02:42,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:02:42,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:02:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:02:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:02:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:02:42,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:02:42,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-14 03:02:42,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-14 03:02:42,455 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:02:42,457 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:02:42,613 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-14 03:02:42,613 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:02:42,671 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:02:42,671 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 03:02:42,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:02:42 BoogieIcfgContainer [2024-11-14 03:02:42,672 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:02:42,674 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:02:42,674 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:02:42,679 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:02:42,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:02:42" (1/3) ... [2024-11-14 03:02:42,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3390324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:02:42, skipping insertion in model container [2024-11-14 03:02:42,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:02:42" (2/3) ... [2024-11-14 03:02:42,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3390324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:02:42, skipping insertion in model container [2024-11-14 03:02:42,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:02:42" (3/3) ... [2024-11-14 03:02:42,682 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_unwindbound5.c [2024-11-14 03:02:42,703 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:02:42,710 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG ps5-ll_unwindbound5.c that has 2 procedures, 15 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 03:02:42,777 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:02:42,797 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;@2a7c1787, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:02:42,799 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:02:42,804 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:02:42,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-14 03:02:42,812 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:02:42,812 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-14 03:02:42,814 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:02:42,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:02:42,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1778785576, now seen corresponding path program 1 times [2024-11-14 03:02:42,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:02:42,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775147095] [2024-11-14 03:02:42,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:42,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:02:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:42,982 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 03:02:42,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:02:42,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775147095] [2024-11-14 03:02:42,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775147095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:02:42,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:02:42,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 03:02:42,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421125423] [2024-11-14 03:02:42,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:02:42,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 03:02:42,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:02:43,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 03:02:43,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 03:02:43,023 INFO L87 Difference]: Start difference. First operand has 15 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:43,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:02:43,057 INFO L93 Difference]: Finished difference Result 29 states and 42 transitions. [2024-11-14 03:02:43,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 03:02:43,060 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-14 03:02:43,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:02:43,068 INFO L225 Difference]: With dead ends: 29 [2024-11-14 03:02:43,068 INFO L226 Difference]: Without dead ends: 13 [2024-11-14 03:02:43,072 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 03:02:43,079 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:02:43,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:02:43,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-14 03:02:43,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-14 03:02:43,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:02:43,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2024-11-14 03:02:43,119 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 6 [2024-11-14 03:02:43,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:02:43,120 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2024-11-14 03:02:43,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:43,122 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2024-11-14 03:02:43,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 03:02:43,122 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:02:43,122 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:02:43,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:02:43,123 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:02:43,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:02:43,125 INFO L85 PathProgramCache]: Analyzing trace with hash 291798255, now seen corresponding path program 1 times [2024-11-14 03:02:43,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:02:43,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212567803] [2024-11-14 03:02:43,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:43,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:02:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:43,275 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 03:02:43,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:02:43,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212567803] [2024-11-14 03:02:43,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212567803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:02:43,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:02:43,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:02:43,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289836027] [2024-11-14 03:02:43,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:02:43,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:02:43,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:02:43,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:02:43,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:02:43,283 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:43,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:02:43,312 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2024-11-14 03:02:43,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:02:43,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-14 03:02:43,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:02:43,314 INFO L225 Difference]: With dead ends: 23 [2024-11-14 03:02:43,314 INFO L226 Difference]: Without dead ends: 15 [2024-11-14 03:02:43,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:02:43,315 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:02:43,316 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:02:43,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-14 03:02:43,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-14 03:02:43,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-14 03:02:43,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-11-14 03:02:43,323 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 7 [2024-11-14 03:02:43,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:02:43,325 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-11-14 03:02:43,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:43,325 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-11-14 03:02:43,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 03:02:43,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:02:43,326 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:02:43,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 03:02:43,326 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:02:43,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:02:43,328 INFO L85 PathProgramCache]: Analyzing trace with hash 293585715, now seen corresponding path program 1 times [2024-11-14 03:02:43,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:02:43,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838397977] [2024-11-14 03:02:43,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:43,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:02:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 03:02:43,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927733874] [2024-11-14 03:02:43,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:43,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:02:43,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:02:43,367 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:02:43,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:02:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:43,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 03:02:43,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:02:43,600 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 03:02:43,602 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:02:43,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:02:43,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838397977] [2024-11-14 03:02:43,603 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 03:02:43,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927733874] [2024-11-14 03:02:43,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927733874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:02:43,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:02:43,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:02:43,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120333402] [2024-11-14 03:02:43,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:02:43,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:02:43,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:02:43,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:02:43,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:02:43,608 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:43,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:02:43,707 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2024-11-14 03:02:43,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:02:43,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-14 03:02:43,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:02:43,709 INFO L225 Difference]: With dead ends: 25 [2024-11-14 03:02:43,709 INFO L226 Difference]: Without dead ends: 21 [2024-11-14 03:02:43,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:02:43,710 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:02:43,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 45 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:02:43,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-14 03:02:43,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-14 03:02:43,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-14 03:02:43,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-14 03:02:43,717 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 7 [2024-11-14 03:02:43,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:02:43,717 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-14 03:02:43,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:02:43,717 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-14 03:02:43,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 03:02:43,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:02:43,718 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:02:43,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 03:02:43,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:02:43,920 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:02:43,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:02:43,921 INFO L85 PathProgramCache]: Analyzing trace with hash 782645461, now seen corresponding path program 1 times [2024-11-14 03:02:43,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:02:43,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695538477] [2024-11-14 03:02:43,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:43,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:02:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:44,037 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 03:02:44,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:02:44,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695538477] [2024-11-14 03:02:44,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695538477] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:02:44,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617391694] [2024-11-14 03:02:44,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:44,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:02:44,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:02:44,041 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:02:44,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:02:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:44,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 03:02:44,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:02:44,151 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 03:02:44,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:02:44,235 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 03:02:44,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617391694] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:02:44,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [885720733] [2024-11-14 03:02:44,256 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2024-11-14 03:02:44,256 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:02:44,260 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:02:44,264 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:02:44,265 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:02:45,389 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 63 for LOIs [2024-11-14 03:02:45,601 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:02:50,960 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '327#(and (<= 1 |#StackHeapBarrier|) (or (and (exists ((|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| Int)) (and (<= 0 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (<= 0 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_9|) (not (= (+ (* (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) 6) (* (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) 15) (* (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) 10)) (+ (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_9| 30) |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|))))) (<= ~counter~0 5)) (and (exists ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| Int) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| Int)) (and (<= 0 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (<= 0 |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8|) (not (= (+ |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| (* |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_8| 30)) (+ (* 15 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) (* (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) 10) (* 6 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|))))))) (<= 6 ~counter~0))) (<= 1 ~counter~0) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-14 03:02:50,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:02:50,961 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:02:50,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2024-11-14 03:02:50,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148831737] [2024-11-14 03:02:50,962 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:02:50,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:02:50,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:02:50,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:02:50,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=225, Unknown=1, NotChecked=0, Total=272 [2024-11-14 03:02:50,966 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:02:51,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:02:51,092 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2024-11-14 03:02:51,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 03:02:51,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 15 [2024-11-14 03:02:51,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:02:51,094 INFO L225 Difference]: With dead ends: 55 [2024-11-14 03:02:51,094 INFO L226 Difference]: Without dead ends: 47 [2024-11-14 03:02:51,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=66, Invalid=313, Unknown=1, NotChecked=0, Total=380 [2024-11-14 03:02:51,096 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:02:51,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 57 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:02:51,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-14 03:02:51,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2024-11-14 03:02:51,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.25) internal successors, (35), 31 states have internal predecessors, (35), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 03:02:51,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2024-11-14 03:02:51,104 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 15 [2024-11-14 03:02:51,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:02:51,105 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2024-11-14 03:02:51,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-14 03:02:51,105 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2024-11-14 03:02:51,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-14 03:02:51,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:02:51,106 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:02:51,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-14 03:02:51,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:02:51,310 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:02:51,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:02:51,311 INFO L85 PathProgramCache]: Analyzing trace with hash 784432921, now seen corresponding path program 1 times [2024-11-14 03:02:51,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:02:51,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288966307] [2024-11-14 03:02:51,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:51,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:02:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 03:02:51,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186323269] [2024-11-14 03:02:51,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:51,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:02:51,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:02:51,334 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:02:51,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 03:02:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:51,394 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 03:02:51,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:02:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:02:51,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:02:51,549 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 03:02:51,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:02:51,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288966307] [2024-11-14 03:02:51,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 03:02:51,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186323269] [2024-11-14 03:02:51,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186323269] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 03:02:51,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:02:51,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-14 03:02:51,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842223817] [2024-11-14 03:02:51,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:02:51,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:02:51,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:02:51,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:02:51,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-14 03:02:51,555 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:02:51,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:02:51,626 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2024-11-14 03:02:51,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:02:51,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-14 03:02:51,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:02:51,628 INFO L225 Difference]: With dead ends: 57 [2024-11-14 03:02:51,628 INFO L226 Difference]: Without dead ends: 49 [2024-11-14 03:02:51,629 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:02:51,629 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:02:51,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 33 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:02:51,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-14 03:02:51,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2024-11-14 03:02:51,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 32 states have internal predecessors, (34), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-14 03:02:51,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2024-11-14 03:02:51,644 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 15 [2024-11-14 03:02:51,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:02:51,644 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2024-11-14 03:02:51,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-14 03:02:51,645 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2024-11-14 03:02:51,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-14 03:02:51,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:02:51,646 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:02:51,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 03:02:51,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:02:51,846 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:02:51,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:02:51,847 INFO L85 PathProgramCache]: Analyzing trace with hash 780138349, now seen corresponding path program 1 times [2024-11-14 03:02:51,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:02:51,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675402655] [2024-11-14 03:02:51,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:51,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:02:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 03:02:51,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [905998106] [2024-11-14 03:02:51,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:51,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:02:51,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:02:51,901 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:02:51,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 03:02:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:51,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-14 03:02:51,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:02:52,116 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 03:02:52,118 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:02:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-14 03:02:52,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:02:52,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675402655] [2024-11-14 03:02:52,257 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 03:02:52,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905998106] [2024-11-14 03:02:52,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905998106] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:02:52,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [396837225] [2024-11-14 03:02:52,260 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 03:02:52,260 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:02:52,260 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:02:52,260 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:02:52,260 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:02:52,786 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2024-11-14 03:02:52,794 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:02:53,127 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '894#(and (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~counter~0 5))' at error location [2024-11-14 03:02:53,127 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:02:53,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:02:53,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-14 03:02:53,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013391162] [2024-11-14 03:02:53,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 03:02:53,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 03:02:53,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:02:53,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 03:02:53,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-14 03:02:53,130 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 03:02:53,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:02:53,292 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2024-11-14 03:02:53,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 03:02:53,293 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 26 [2024-11-14 03:02:53,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:02:53,294 INFO L225 Difference]: With dead ends: 52 [2024-11-14 03:02:53,294 INFO L226 Difference]: Without dead ends: 43 [2024-11-14 03:02:53,294 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2024-11-14 03:02:53,295 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 1 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:02:53,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 99 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:02:53,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-14 03:02:53,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-11-14 03:02:53,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 03:02:53,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2024-11-14 03:02:53,319 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 26 [2024-11-14 03:02:53,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:02:53,319 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2024-11-14 03:02:53,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 03:02:53,320 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2024-11-14 03:02:53,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-14 03:02:53,322 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:02:53,322 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:02:53,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-14 03:02:53,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-14 03:02:53,523 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:02:53,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:02:53,524 INFO L85 PathProgramCache]: Analyzing trace with hash 2136345052, now seen corresponding path program 1 times [2024-11-14 03:02:53,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:02:53,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054967720] [2024-11-14 03:02:53,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:53,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:02:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-14 03:02:53,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:02:53,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054967720] [2024-11-14 03:02:53,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054967720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:02:53,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363713688] [2024-11-14 03:02:53,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:53,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:02:53,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:02:53,838 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:02:53,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 03:02:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:02:53,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 03:02:53,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:02:53,984 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:02:53,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:02:54,097 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-14 03:02:54,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363713688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:02:54,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [616081772] [2024-11-14 03:02:54,100 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 03:02:54,100 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:02:54,100 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:02:54,100 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:02:54,100 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:02:54,607 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2024-11-14 03:02:54,613 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:02:54,929 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1318#(and (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (= |__VERIFIER_assert_#in~cond| 0))' at error location [2024-11-14 03:02:54,929 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:02:54,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:02:54,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 8 [2024-11-14 03:02:54,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585303337] [2024-11-14 03:02:54,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:02:54,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 03:02:54,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:02:54,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 03:02:54,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-14 03:02:54,931 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-14 03:02:55,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:02:55,028 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2024-11-14 03:02:55,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 03:02:55,029 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 44 [2024-11-14 03:02:55,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:02:55,030 INFO L225 Difference]: With dead ends: 59 [2024-11-14 03:02:55,030 INFO L226 Difference]: Without dead ends: 49 [2024-11-14 03:02:55,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 116 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2024-11-14 03:02:55,031 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:02:55,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 03:02:55,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-14 03:02:55,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-14 03:02:55,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-14 03:02:55,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2024-11-14 03:02:55,044 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 44 [2024-11-14 03:02:55,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:02:55,045 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2024-11-14 03:02:55,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 5 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-14 03:02:55,045 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2024-11-14 03:02:55,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-14 03:02:55,046 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:02:55,046 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:02:55,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-14 03:02:55,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-14 03:02:55,250 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:02:55,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:02:55,251 INFO L85 PathProgramCache]: Analyzing trace with hash 319030395, now seen corresponding path program 2 times [2024-11-14 03:02:55,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:02:55,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547555150] [2024-11-14 03:02:55,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:02:55,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:02:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 03:02:55,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459151512] [2024-11-14 03:02:55,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:02:55,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:02:55,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:02:55,344 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:02:55,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-14 03:02:55,653 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-14 03:02:55,654 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-14 03:02:55,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-14 03:02:55,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:02:55,880 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 20 proven. 47 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-14 03:02:55,881 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:03:00,066 WARN L851 $PredicateComparison]: unable to prove that (or (= (+ |c_ULTIMATE.start_main_~y~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (+ |c_ULTIMATE.start_main_~c~0#1| (* |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0))) is different from false [2024-11-14 03:03:20,207 WARN L873 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| Int) (|v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_43| Int)) (or (= (+ |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_43| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_43|)) (+ |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57|))) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| 15) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| 6) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| 10) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| 29)) 30) 0)))) is different from true [2024-11-14 03:03:41,729 WARN L873 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| Int) (|v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_43| Int)) (or (= (+ |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_43| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_43|)) (+ |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57|))) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| 15) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| 6) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| 10) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_57| 29)) 30) 0))) (= c___VERIFIER_assert_~cond 0)) is different from true [2024-11-14 03:03:49,795 WARN L851 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0)) (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2)) (+ (* |c_ULTIMATE.start_main_~c~0#1| 2) (* |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~y~0#1|)))) is different from false [2024-11-14 03:03:59,871 WARN L851 $PredicateComparison]: unable to prove that (or (= (+ (* |c_ULTIMATE.start_main_~c~0#1| 3) (* |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 3))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0))) is different from false [2024-11-14 03:04:09,994 WARN L851 $PredicateComparison]: unable to prove that (or (= (+ (* |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~c~0#1| 4)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 4))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0))) is different from false [2024-11-14 03:04:16,092 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 20 proven. 1 refuted. 6 times theorem prover too weak. 45 trivial. 40 not checked. [2024-11-14 03:04:16,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:04:16,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547555150] [2024-11-14 03:04:16,093 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-14 03:04:16,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459151512] [2024-11-14 03:04:16,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459151512] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:04:16,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2110270652] [2024-11-14 03:04:16,095 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2024-11-14 03:04:16,096 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:04:16,096 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:04:16,096 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:04:16,096 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:04:16,498 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2024-11-14 03:04:16,504 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:04:16,844 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1813#(and (<= 1 |#StackHeapBarrier|) (<= 1 ~counter~0) (= |__VERIFIER_assert_#in~cond| 0) (<= ~counter~0 5))' at error location [2024-11-14 03:04:16,844 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:04:16,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-14 03:04:16,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2024-11-14 03:04:16,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477602369] [2024-11-14 03:04:16,845 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-14 03:04:16,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-14 03:04:16,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:04:16,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-14 03:04:16,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=534, Unknown=6, NotChecked=306, Total=930 [2024-11-14 03:04:16,847 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 22 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-14 03:04:17,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:04:17,317 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2024-11-14 03:04:17,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-14 03:04:17,320 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Word has length 50 [2024-11-14 03:04:17,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:04:17,321 INFO L225 Difference]: With dead ends: 71 [2024-11-14 03:04:17,321 INFO L226 Difference]: Without dead ends: 63 [2024-11-14 03:04:17,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=120, Invalid=828, Unknown=6, NotChecked=378, Total=1332 [2024-11-14 03:04:17,326 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 303 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 03:04:17,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 261 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 181 Invalid, 0 Unknown, 303 Unchecked, 0.3s Time] [2024-11-14 03:04:17,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-14 03:04:17,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2024-11-14 03:04:17,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 43 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-14 03:04:17,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2024-11-14 03:04:17,351 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 50 [2024-11-14 03:04:17,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:04:17,351 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2024-11-14 03:04:17,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 12 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-14 03:04:17,351 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2024-11-14 03:04:17,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 03:04:17,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:04:17,352 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:04:17,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-14 03:04:17,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:04:17,553 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:04:17,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:04:17,553 INFO L85 PathProgramCache]: Analyzing trace with hash 257287606, now seen corresponding path program 2 times [2024-11-14 03:04:17,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:04:17,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696506477] [2024-11-14 03:04:17,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:04:17,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:04:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-14 03:04:17,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1470659975] [2024-11-14 03:04:17,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-14 03:04:17,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:04:17,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:04:17,594 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:04:17,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-14 03:04:17,832 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-14 03:04:17,832 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-14 03:04:17,833 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-14 03:04:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-14 03:04:17,896 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-14 03:04:17,896 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-14 03:04:17,897 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-14 03:04:17,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-14 03:04:18,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-14 03:04:18,102 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2024-11-14 03:04:18,130 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-14 03:04:18,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 03:04:18 BoogieIcfgContainer [2024-11-14 03:04:18,133 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-14 03:04:18,133 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-14 03:04:18,133 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-14 03:04:18,134 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-14 03:04:18,134 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:02:42" (3/4) ... [2024-11-14 03:04:18,135 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-14 03:04:18,178 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/witness.graphml [2024-11-14 03:04:18,178 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-14 03:04:18,179 INFO L158 Benchmark]: Toolchain (without parser) took 96144.52ms. Allocated memory was 117.4MB in the beginning and 268.4MB in the end (delta: 151.0MB). Free memory was 92.6MB in the beginning and 227.9MB in the end (delta: -135.3MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2024-11-14 03:04:18,179 INFO L158 Benchmark]: CDTParser took 1.34ms. Allocated memory is still 117.4MB. Free memory was 75.2MB in the beginning and 75.0MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:04:18,179 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.73ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 81.5MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:04:18,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.70ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 80.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:04:18,180 INFO L158 Benchmark]: Boogie Preprocessor took 17.86ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 79.6MB in the end (delta: 485.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:04:18,180 INFO L158 Benchmark]: RCFGBuilder took 369.53ms. Allocated memory is still 117.4MB. Free memory was 79.4MB in the beginning and 67.5MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-14 03:04:18,180 INFO L158 Benchmark]: TraceAbstraction took 95458.53ms. Allocated memory was 117.4MB in the beginning and 268.4MB in the end (delta: 151.0MB). Free memory was 67.0MB in the beginning and 231.6MB in the end (delta: -164.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:04:18,181 INFO L158 Benchmark]: Witness Printer took 44.67ms. Allocated memory is still 268.4MB. Free memory was 231.6MB in the beginning and 227.9MB in the end (delta: 3.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 03:04:18,182 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.34ms. Allocated memory is still 117.4MB. Free memory was 75.2MB in the beginning and 75.0MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.73ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 81.5MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.70ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 80.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.86ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 79.6MB in the end (delta: 485.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 369.53ms. Allocated memory is still 117.4MB. Free memory was 79.4MB in the beginning and 67.5MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 95458.53ms. Allocated memory was 117.4MB in the beginning and 268.4MB in the end (delta: 151.0MB). Free memory was 67.0MB in the beginning and 231.6MB in the end (delta: -164.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 44.67ms. Allocated memory is still 268.4MB. Free memory was 231.6MB in the beginning and 227.9MB in the end (delta: 3.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L22] CALL assume_abort_if_not(k <= 256) [L7] COND FALSE !(!cond) [L22] RET assume_abort_if_not(k <= 256) [L24] y = 0 [L25] x = 0 [L26] c = 0 VAL [c=0, counter=0, k=6, x=0, y=0] [L28] EXPR counter++ VAL [c=0, counter=1, k=6, x=0, y=0] [L28] COND TRUE counter++<5 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=1] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=0, counter=1, k=6, x=0, y=0] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=1, counter=1, k=6, x=1, y=1] [L28] EXPR counter++ VAL [c=1, counter=2, k=6, x=1, y=1] [L28] COND TRUE counter++<5 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=2] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=1, counter=2, k=6, x=1, y=1] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=2, counter=2, k=6, x=17, y=2] [L28] EXPR counter++ VAL [c=2, counter=3, k=6, x=17, y=2] [L28] COND TRUE counter++<5 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=3] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=3] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=2, counter=3, k=6, x=17, y=2] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=3, counter=3, k=6, x=98, y=3] [L28] EXPR counter++ VAL [c=3, counter=4, k=6, x=98, y=3] [L28] COND TRUE counter++<5 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=4] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=4] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=3, counter=4, k=6, x=98, y=3] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=4, counter=4, k=6, x=354, y=4] [L28] EXPR counter++ VAL [c=4, counter=5, k=6, x=354, y=4] [L28] COND TRUE counter++<5 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=5] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=4, counter=5, k=6, x=354, y=4] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [c=5, counter=5, k=6, x=979, y=5] [L28] EXPR counter++ VAL [c=5, counter=6, k=6, x=979, y=5] [L28] COND FALSE !(counter++<5) [L39] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [\old(cond)=1, counter=6] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=6] [L39] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) VAL [c=5, counter=6, k=6, x=979, y=5] [L40] CALL __VERIFIER_assert(k*y == y*y) VAL [\old(cond)=0, counter=6] [L10] COND TRUE !(cond) VAL [\old(cond)=0, counter=6] [L12] reach_error() VAL [\old(cond)=0, counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 95.3s, OverallIterations: 9, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 46 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 610 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 303 IncrementalHoareTripleChecker+Unchecked, 493 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 341 IncrementalHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 117 mSDtfsCounter, 341 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 471 GetRequests, 351 SyntacticMatches, 15 SemanticMatches, 105 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 19.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=8, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 81.9s InterpolantComputationTime, 431 NumberOfCodeBlocks, 431 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 364 ConstructedInterpolants, 3 QuantifiedInterpolants, 1959 SizeOfPredicates, 14 NumberOfNonLiveVariables, 554 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 305/536 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-14 03:04:18,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54746718-119a-45e5-92eb-40313a0cb4de/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE