/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:58:45,736 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:58:45,802 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:58:45,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:58:45,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:58:45,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:58:45,828 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:58:45,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:58:45,828 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:58:45,831 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:58:45,831 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:58:45,832 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:58:45,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:58:45,833 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:58:45,833 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:58:45,833 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:58:45,833 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:58:45,833 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:58:45,834 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:58:45,834 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:58:45,835 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:58:45,835 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:58:45,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:58:45,835 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:58:45,835 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:58:45,835 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:58:45,835 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:58:45,836 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:58:45,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:58:45,836 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:58:45,837 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:58:45,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:58:45,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:58:45,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:58:45,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:58:45,837 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:58:45,837 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:58:45,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:58:45,838 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:58:45,838 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:58:45,838 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:58:45,838 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:58:45,838 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:58:45,838 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:58:46,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:58:46,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:58:46,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:58:46,047 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:58:46,047 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:58:46,048 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound2.c [2023-12-16 04:58:47,001 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:58:47,150 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:58:47,150 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound2.c [2023-12-16 04:58:47,154 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4372bac2f/2419750d2b6942d0a30c30e31d626d58/FLAG498b91d68 [2023-12-16 04:58:47,165 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4372bac2f/2419750d2b6942d0a30c30e31d626d58 [2023-12-16 04:58:47,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:58:47,168 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:58:47,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:58:47,170 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:58:47,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:58:47,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:58:47" (1/1) ... [2023-12-16 04:58:47,176 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dea853f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:47, skipping insertion in model container [2023-12-16 04:58:47,176 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:58:47" (1/1) ... [2023-12-16 04:58:47,197 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:58:47,311 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound2.c[588,601] [2023-12-16 04:58:47,343 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:58:47,351 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:58:47,360 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound2.c[588,601] [2023-12-16 04:58:47,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:58:47,389 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:58:47,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:47 WrapperNode [2023-12-16 04:58:47,389 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:58:47,390 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:58:47,390 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:58:47,390 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:58:47,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:47" (1/1) ... [2023-12-16 04:58:47,408 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:47" (1/1) ... [2023-12-16 04:58:47,425 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-12-16 04:58:47,425 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:58:47,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:58:47,426 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:58:47,426 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:58:47,433 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:47" (1/1) ... [2023-12-16 04:58:47,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:47" (1/1) ... [2023-12-16 04:58:47,435 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:47" (1/1) ... [2023-12-16 04:58:47,446 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-16 04:58:47,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:47" (1/1) ... [2023-12-16 04:58:47,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:47" (1/1) ... [2023-12-16 04:58:47,453 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:47" (1/1) ... [2023-12-16 04:58:47,456 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:47" (1/1) ... [2023-12-16 04:58:47,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:47" (1/1) ... [2023-12-16 04:58:47,462 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:47" (1/1) ... [2023-12-16 04:58:47,465 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:58:47,465 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:58:47,466 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:58:47,466 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:58:47,466 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:47" (1/1) ... [2023-12-16 04:58:47,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:58:47,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:58:47,486 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-16 04:58:47,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-16 04:58:47,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:58:47,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:58:47,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:58:47,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:58:47,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-16 04:58:47,511 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-16 04:58:47,553 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:58:47,554 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:58:47,650 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:58:47,676 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:58:47,676 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 04:58:47,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:58:47 BoogieIcfgContainer [2023-12-16 04:58:47,677 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:58:47,678 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:58:47,678 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:58:47,680 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:58:47,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:58:47" (1/3) ... [2023-12-16 04:58:47,680 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad9b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:58:47, skipping insertion in model container [2023-12-16 04:58:47,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:47" (2/3) ... [2023-12-16 04:58:47,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad9b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:58:47, skipping insertion in model container [2023-12-16 04:58:47,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:58:47" (3/3) ... [2023-12-16 04:58:47,682 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound2.c [2023-12-16 04:58:47,692 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:58:47,693 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:58:47,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:58:47,722 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6747b7c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:58:47,723 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:58:47,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-16 04:58:47,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-16 04:58:47,729 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:47,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:58:47,730 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:47,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:47,733 INFO L85 PathProgramCache]: Analyzing trace with hash -2080946738, now seen corresponding path program 1 times [2023-12-16 04:58:47,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:47,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785131848] [2023-12-16 04:58:47,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:47,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:58:47,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:58:47,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:58:47,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785131848] [2023-12-16 04:58:47,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785131848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:58:47,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:58:47,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:58:47,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634557664] [2023-12-16 04:58:47,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:58:47,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 04:58:47,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:58:47,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 04:58:47,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:58:47,870 INFO L87 Difference]: Start difference. First operand has 24 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-12-16 04:58:47,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:58:47,906 INFO L93 Difference]: Finished difference Result 46 states and 84 transitions. [2023-12-16 04:58:47,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 04:58:47,908 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 8 [2023-12-16 04:58:47,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:58:47,913 INFO L225 Difference]: With dead ends: 46 [2023-12-16 04:58:47,913 INFO L226 Difference]: Without dead ends: 22 [2023-12-16 04:58:47,915 INFO L412 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 [2023-12-16 04:58:47,917 INFO L413 NwaCegarLoop]: 32 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, 32 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 [2023-12-16 04:58:47,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:58:47,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-16 04:58:47,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-16 04:58:47,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-16 04:58:47,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 32 transitions. [2023-12-16 04:58:47,940 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 32 transitions. Word has length 8 [2023-12-16 04:58:47,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:58:47,940 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 32 transitions. [2023-12-16 04:58:47,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2023-12-16 04:58:47,940 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2023-12-16 04:58:47,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-16 04:58:47,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:47,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:58:47,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 04:58:47,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:47,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:47,942 INFO L85 PathProgramCache]: Analyzing trace with hash -304390244, now seen corresponding path program 1 times [2023-12-16 04:58:47,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:47,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137946969] [2023-12-16 04:58:47,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:47,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:58:48,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:58:48,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:58:48,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137946969] [2023-12-16 04:58:48,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137946969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:58:48,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:58:48,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:58:48,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445515382] [2023-12-16 04:58:48,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:58:48,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:58:48,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:58:48,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:58:48,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:58:48,139 INFO L87 Difference]: Start difference. First operand 22 states and 32 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-12-16 04:58:48,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:58:48,210 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2023-12-16 04:58:48,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:58:48,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 8 [2023-12-16 04:58:48,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:58:48,212 INFO L225 Difference]: With dead ends: 28 [2023-12-16 04:58:48,212 INFO L226 Difference]: Without dead ends: 26 [2023-12-16 04:58:48,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:58:48,213 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:58:48,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 78 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:58:48,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-16 04:58:48,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-16 04:58:48,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-16 04:58:48,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2023-12-16 04:58:48,222 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 8 [2023-12-16 04:58:48,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:58:48,222 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2023-12-16 04:58:48,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-12-16 04:58:48,222 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2023-12-16 04:58:48,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-16 04:58:48,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:48,223 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:58:48,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 04:58:48,223 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:48,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:48,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1112146385, now seen corresponding path program 1 times [2023-12-16 04:58:48,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:48,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292688584] [2023-12-16 04:58:48,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:48,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:48,243 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:58:48,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105742395] [2023-12-16 04:58:48,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:48,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:48,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:58:48,246 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:58:48,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:58:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:58:48,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 04:58:48,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:58:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:58:48,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:58:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 04:58:48,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:58:48,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292688584] [2023-12-16 04:58:48,449 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:58:48,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105742395] [2023-12-16 04:58:48,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105742395] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:58:48,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:58:48,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-12-16 04:58:48,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373146189] [2023-12-16 04:58:48,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:58:48,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 04:58:48,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:58:48,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 04:58:48,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:58:48,458 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 04:58:48,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:58:48,695 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2023-12-16 04:58:48,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:58:48,697 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2023-12-16 04:58:48,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:58:48,698 INFO L225 Difference]: With dead ends: 51 [2023-12-16 04:58:48,699 INFO L226 Difference]: Without dead ends: 49 [2023-12-16 04:58:48,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:58:48,700 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:58:48,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 100 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:58:48,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-16 04:58:48,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2023-12-16 04:58:48,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 20 states have (on average 1.15) internal successors, (23), 22 states have internal predecessors, (23), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 04:58:48,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 64 transitions. [2023-12-16 04:58:48,718 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 64 transitions. Word has length 13 [2023-12-16 04:58:48,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:58:48,719 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 64 transitions. [2023-12-16 04:58:48,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-16 04:58:48,719 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 64 transitions. [2023-12-16 04:58:48,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-16 04:58:48,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:48,720 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:58:48,724 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 04:58:48,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:48,924 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:48,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:48,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1589877564, now seen corresponding path program 1 times [2023-12-16 04:58:48,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:48,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847911380] [2023-12-16 04:58:48,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:48,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:48,932 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:58:48,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446182132] [2023-12-16 04:58:48,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:48,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:48,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:58:48,936 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:58:48,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 04:58:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:58:48,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 04:58:48,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:58:49,025 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 04:58:49,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:58:49,124 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-16 04:58:49,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:58:49,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847911380] [2023-12-16 04:58:49,124 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:58:49,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446182132] [2023-12-16 04:58:49,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446182132] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:58:49,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:58:49,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-12-16 04:58:49,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53116073] [2023-12-16 04:58:49,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:58:49,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 04:58:49,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:58:49,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 04:58:49,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:58:49,131 INFO L87 Difference]: Start difference. First operand 46 states and 64 transitions. Second operand has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 04:58:49,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:58:49,312 INFO L93 Difference]: Finished difference Result 53 states and 70 transitions. [2023-12-16 04:58:49,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:58:49,313 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 18 [2023-12-16 04:58:49,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:58:49,313 INFO L225 Difference]: With dead ends: 53 [2023-12-16 04:58:49,313 INFO L226 Difference]: Without dead ends: 51 [2023-12-16 04:58:49,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:58:49,330 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:58:49,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 70 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:58:49,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-16 04:58:49,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2023-12-16 04:58:49,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 21 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-16 04:58:49,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 67 transitions. [2023-12-16 04:58:49,346 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 67 transitions. Word has length 18 [2023-12-16 04:58:49,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:58:49,347 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 67 transitions. [2023-12-16 04:58:49,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-16 04:58:49,347 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 67 transitions. [2023-12-16 04:58:49,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-16 04:58:49,347 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:49,348 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:58:49,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 04:58:49,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-12-16 04:58:49,553 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:49,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:49,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1560032783, now seen corresponding path program 1 times [2023-12-16 04:58:49,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:49,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511465153] [2023-12-16 04:58:49,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:49,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:49,560 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:58:49,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037699690] [2023-12-16 04:58:49,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:49,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:49,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:58:49,561 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:58:49,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 04:58:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:58:49,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 04:58:49,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:58:49,675 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 04:58:49,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:58:49,920 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 04:58:49,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:58:49,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511465153] [2023-12-16 04:58:49,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:58:49,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037699690] [2023-12-16 04:58:49,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037699690] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:58:49,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:58:49,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-12-16 04:58:49,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353572289] [2023-12-16 04:58:49,921 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:58:49,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 04:58:49,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:58:49,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 04:58:49,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:58:49,922 INFO L87 Difference]: Start difference. First operand 50 states and 67 transitions. Second operand has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 04:58:50,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:58:50,250 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2023-12-16 04:58:50,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:58:50,250 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 23 [2023-12-16 04:58:50,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:58:50,251 INFO L225 Difference]: With dead ends: 66 [2023-12-16 04:58:50,251 INFO L226 Difference]: Without dead ends: 57 [2023-12-16 04:58:50,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:58:50,252 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 16 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:58:50,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 95 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:58:50,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-16 04:58:50,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-12-16 04:58:50,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 32 states have internal predecessors, (32), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2023-12-16 04:58:50,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2023-12-16 04:58:50,267 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 23 [2023-12-16 04:58:50,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:58:50,267 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2023-12-16 04:58:50,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-16 04:58:50,267 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2023-12-16 04:58:50,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-16 04:58:50,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:50,268 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:58:50,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 04:58:50,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:50,473 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:50,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:50,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1335110159, now seen corresponding path program 1 times [2023-12-16 04:58:50,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:50,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130316279] [2023-12-16 04:58:50,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:50,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:50,494 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:58:50,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129923476] [2023-12-16 04:58:50,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:50,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:50,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:58:50,497 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:58:50,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 04:58:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:58:50,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-16 04:58:50,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:58:50,622 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-16 04:58:50,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:58:50,718 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-16 04:58:50,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:58:50,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130316279] [2023-12-16 04:58:50,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:58:50,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129923476] [2023-12-16 04:58:50,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129923476] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:58:50,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:58:50,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-12-16 04:58:50,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623151799] [2023-12-16 04:58:50,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:58:50,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 04:58:50,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:58:50,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 04:58:50,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:58:50,720 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 11 states have internal predecessors, (23), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2023-12-16 04:58:54,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-16 04:58:54,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:58:54,933 INFO L93 Difference]: Finished difference Result 81 states and 98 transitions. [2023-12-16 04:58:54,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 04:58:54,934 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 11 states have internal predecessors, (23), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) Word has length 45 [2023-12-16 04:58:54,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:58:54,935 INFO L225 Difference]: With dead ends: 81 [2023-12-16 04:58:54,935 INFO L226 Difference]: Without dead ends: 79 [2023-12-16 04:58:54,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-12-16 04:58:54,936 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 23 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:58:54,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 130 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 162 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2023-12-16 04:58:54,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-16 04:58:54,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2023-12-16 04:58:54,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 44 states have internal predecessors, (44), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-16 04:58:54,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2023-12-16 04:58:54,953 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 45 [2023-12-16 04:58:54,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:58:54,953 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2023-12-16 04:58:54,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 11 states have internal predecessors, (23), 6 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 6 states have call successors, (14) [2023-12-16 04:58:54,953 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2023-12-16 04:58:54,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 04:58:54,954 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:54,954 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:58:54,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 04:58:55,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:55,159 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:55,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:55,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1958076911, now seen corresponding path program 2 times [2023-12-16 04:58:55,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:55,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594797669] [2023-12-16 04:58:55,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:55,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:55,166 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:58:55,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248342148] [2023-12-16 04:58:55,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 04:58:55,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:55,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:58:55,167 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:58:55,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 04:58:55,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 04:58:55,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:58:55,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-16 04:58:55,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:58:55,310 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 17 proven. 31 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-16 04:58:55,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:58:55,413 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-16 04:58:55,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:58:55,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594797669] [2023-12-16 04:58:55,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:58:55,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248342148] [2023-12-16 04:58:55,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248342148] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:58:55,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:58:55,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-12-16 04:58:55,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335527579] [2023-12-16 04:58:55,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:58:55,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 04:58:55,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:58:55,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 04:58:55,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:58:55,415 INFO L87 Difference]: Start difference. First operand 78 states and 95 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-16 04:58:55,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:58:55,556 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2023-12-16 04:58:55,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:58:55,556 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 55 [2023-12-16 04:58:55,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:58:55,557 INFO L225 Difference]: With dead ends: 85 [2023-12-16 04:58:55,557 INFO L226 Difference]: Without dead ends: 80 [2023-12-16 04:58:55,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:58:55,558 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 19 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:58:55,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 96 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:58:55,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-16 04:58:55,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-12-16 04:58:55,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 47 states have internal predecessors, (47), 24 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-16 04:58:55,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2023-12-16 04:58:55,572 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 55 [2023-12-16 04:58:55,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:58:55,572 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2023-12-16 04:58:55,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-12-16 04:58:55,573 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2023-12-16 04:58:55,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 04:58:55,574 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:55,574 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:58:55,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 04:58:55,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:55,779 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:55,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:55,780 INFO L85 PathProgramCache]: Analyzing trace with hash 811423347, now seen corresponding path program 1 times [2023-12-16 04:58:55,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:55,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988662169] [2023-12-16 04:58:55,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:55,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:55,787 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:58:55,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142157952] [2023-12-16 04:58:55,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:55,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:55,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:58:55,788 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:58:55,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 04:58:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:58:55,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-16 04:58:55,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:58:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-16 04:58:56,031 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:58:56,146 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-12-16 04:58:56,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:58:56,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988662169] [2023-12-16 04:58:56,147 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:58:56,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142157952] [2023-12-16 04:58:56,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142157952] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:58:56,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:58:56,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2023-12-16 04:58:56,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146825784] [2023-12-16 04:58:56,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:58:56,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 04:58:56,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:58:56,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 04:58:56,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:58:56,150 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2023-12-16 04:58:56,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:58:56,387 INFO L93 Difference]: Finished difference Result 94 states and 113 transitions. [2023-12-16 04:58:56,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 04:58:56,387 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 66 [2023-12-16 04:58:56,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:58:56,389 INFO L225 Difference]: With dead ends: 94 [2023-12-16 04:58:56,389 INFO L226 Difference]: Without dead ends: 92 [2023-12-16 04:58:56,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2023-12-16 04:58:56,390 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 21 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:58:56,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 156 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:58:56,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-12-16 04:58:56,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2023-12-16 04:58:56,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 51 states have internal predecessors, (52), 29 states have call successors, (29), 12 states have call predecessors, (29), 12 states have return successors, (27), 26 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-16 04:58:56,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2023-12-16 04:58:56,421 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 66 [2023-12-16 04:58:56,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:58:56,421 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2023-12-16 04:58:56,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2023-12-16 04:58:56,421 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2023-12-16 04:58:56,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 04:58:56,423 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:56,423 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:58:56,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-16 04:58:56,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:56,631 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:56,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:56,631 INFO L85 PathProgramCache]: Analyzing trace with hash 462308408, now seen corresponding path program 1 times [2023-12-16 04:58:56,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:56,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754006414] [2023-12-16 04:58:56,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:56,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:56,637 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:58:56,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120599212] [2023-12-16 04:58:56,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:56,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:56,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:58:56,642 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:58:56,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 04:58:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:58:56,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-16 04:58:56,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:58:56,834 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-16 04:58:56,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:58:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-12-16 04:58:56,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:58:56,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754006414] [2023-12-16 04:58:56,940 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:58:56,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120599212] [2023-12-16 04:58:56,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120599212] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:58:56,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:58:56,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2023-12-16 04:58:56,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141730634] [2023-12-16 04:58:56,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:58:56,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 04:58:56,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:58:56,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 04:58:56,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:58:56,941 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2023-12-16 04:58:57,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:58:57,319 INFO L93 Difference]: Finished difference Result 123 states and 145 transitions. [2023-12-16 04:58:57,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 04:58:57,320 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) Word has length 71 [2023-12-16 04:58:57,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:58:57,321 INFO L225 Difference]: With dead ends: 123 [2023-12-16 04:58:57,321 INFO L226 Difference]: Without dead ends: 114 [2023-12-16 04:58:57,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2023-12-16 04:58:57,321 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 20 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:58:57,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 201 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:58:57,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-16 04:58:57,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2023-12-16 04:58:57,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 62 states have (on average 1.064516129032258) internal successors, (66), 65 states have internal predecessors, (66), 34 states have call successors, (34), 16 states have call predecessors, (34), 16 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-16 04:58:57,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 133 transitions. [2023-12-16 04:58:57,351 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 133 transitions. Word has length 71 [2023-12-16 04:58:57,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:58:57,352 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 133 transitions. [2023-12-16 04:58:57,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 6 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (24), 6 states have call predecessors, (24), 6 states have call successors, (24) [2023-12-16 04:58:57,352 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 133 transitions. [2023-12-16 04:58:57,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 04:58:57,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:57,353 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-12-16 04:58:57,359 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-16 04:58:57,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:57,558 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:57,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:57,559 INFO L85 PathProgramCache]: Analyzing trace with hash 978023919, now seen corresponding path program 3 times [2023-12-16 04:58:57,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:57,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071262068] [2023-12-16 04:58:57,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:57,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:57,565 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:58:57,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544517752] [2023-12-16 04:58:57,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 04:58:57,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:57,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:58:57,566 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:58:57,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 04:58:57,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-16 04:58:57,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:58:57,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-16 04:58:57,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:58:57,716 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-16 04:58:57,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:58:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-12-16 04:58:58,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:58:58,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071262068] [2023-12-16 04:58:58,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:58:58,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544517752] [2023-12-16 04:58:58,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544517752] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:58:58,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:58:58,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-12-16 04:58:58,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858023515] [2023-12-16 04:58:58,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:58:58,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 04:58:58,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:58:58,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 04:58:58,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-12-16 04:58:58,312 INFO L87 Difference]: Start difference. First operand 113 states and 133 transitions. Second operand has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-16 04:58:59,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:58:59,815 INFO L93 Difference]: Finished difference Result 133 states and 150 transitions. [2023-12-16 04:58:59,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 04:58:59,816 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) Word has length 77 [2023-12-16 04:58:59,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:58:59,817 INFO L225 Difference]: With dead ends: 133 [2023-12-16 04:58:59,817 INFO L226 Difference]: Without dead ends: 123 [2023-12-16 04:58:59,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2023-12-16 04:58:59,817 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 20 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-16 04:58:59,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 189 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-16 04:58:59,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-16 04:58:59,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-12-16 04:58:59,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 71 states have (on average 1.0422535211267605) internal successors, (74), 73 states have internal predecessors, (74), 32 states have call successors, (32), 19 states have call predecessors, (32), 19 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-16 04:58:59,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 137 transitions. [2023-12-16 04:58:59,837 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 137 transitions. Word has length 77 [2023-12-16 04:58:59,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:58:59,837 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 137 transitions. [2023-12-16 04:58:59,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 8 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-16 04:58:59,838 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 137 transitions. [2023-12-16 04:58:59,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-16 04:58:59,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:59,839 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:58:59,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-16 04:59:00,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-16 04:59:00,044 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:59:00,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:59:00,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1954081427, now seen corresponding path program 2 times [2023-12-16 04:59:00,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:59:00,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657420679] [2023-12-16 04:59:00,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:59:00,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:59:00,063 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:59:00,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [586248859] [2023-12-16 04:59:00,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 04:59:00,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:59:00,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:59:00,065 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:59:00,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 04:59:00,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 04:59:00,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:59:00,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-16 04:59:00,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:59:00,439 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 42 proven. 42 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-16 04:59:00,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:59:00,711 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 42 proven. 42 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2023-12-16 04:59:00,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:59:00,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657420679] [2023-12-16 04:59:00,712 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:59:00,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586248859] [2023-12-16 04:59:00,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586248859] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:59:00,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:59:00,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2023-12-16 04:59:00,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487937807] [2023-12-16 04:59:00,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:59:00,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-16 04:59:00,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:59:00,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-16 04:59:00,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-12-16 04:59:00,714 INFO L87 Difference]: Start difference. First operand 123 states and 137 transitions. Second operand has 18 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 10 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 10 states have call predecessors, (42), 10 states have call successors, (42) [2023-12-16 04:59:01,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:59:01,417 INFO L93 Difference]: Finished difference Result 159 states and 192 transitions. [2023-12-16 04:59:01,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-16 04:59:01,418 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 10 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 10 states have call predecessors, (42), 10 states have call successors, (42) Word has length 120 [2023-12-16 04:59:01,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:59:01,419 INFO L225 Difference]: With dead ends: 159 [2023-12-16 04:59:01,420 INFO L226 Difference]: Without dead ends: 157 [2023-12-16 04:59:01,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2023-12-16 04:59:01,420 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 32 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 04:59:01,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 385 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 04:59:01,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-16 04:59:01,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 154. [2023-12-16 04:59:01,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 83 states have (on average 1.072289156626506) internal successors, (89), 86 states have internal predecessors, (89), 49 states have call successors, (49), 21 states have call predecessors, (49), 21 states have return successors, (48), 46 states have call predecessors, (48), 48 states have call successors, (48) [2023-12-16 04:59:01,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 186 transitions. [2023-12-16 04:59:01,461 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 186 transitions. Word has length 120 [2023-12-16 04:59:01,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:59:01,462 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 186 transitions. [2023-12-16 04:59:01,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 10 states have call successors, (44), 3 states have call predecessors, (44), 1 states have return successors, (42), 10 states have call predecessors, (42), 10 states have call successors, (42) [2023-12-16 04:59:01,462 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 186 transitions. [2023-12-16 04:59:01,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-16 04:59:01,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:59:01,463 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:59:01,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 04:59:01,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:59:01,668 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:59:01,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:59:01,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1568288115, now seen corresponding path program 1 times [2023-12-16 04:59:01,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:59:01,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810924762] [2023-12-16 04:59:01,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:59:01,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:59:01,675 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:59:01,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1412251718] [2023-12-16 04:59:01,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:59:01,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:59:01,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:59:01,676 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:59:01,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 04:59:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:59:01,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-16 04:59:01,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:59:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 104 proven. 110 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2023-12-16 04:59:02,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:59:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 104 proven. 108 refuted. 2 times theorem prover too weak. 886 trivial. 0 not checked. [2023-12-16 04:59:29,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:59:29,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810924762] [2023-12-16 04:59:29,872 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:59:29,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412251718] [2023-12-16 04:59:29,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412251718] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:59:29,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:59:29,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2023-12-16 04:59:29,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884733397] [2023-12-16 04:59:29,873 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:59:29,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-16 04:59:29,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:59:29,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-16 04:59:29,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=324, Unknown=4, NotChecked=0, Total=420 [2023-12-16 04:59:29,874 INFO L87 Difference]: Start difference. First operand 154 states and 186 transitions. Second operand has 21 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 13 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 12 states have call predecessors, (46), 13 states have call successors, (46) [2023-12-16 05:00:04,012 WARN L293 SmtUtils]: Spent 33.57s on a formula simplification that was a NOOP. DAG size: 92 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-12-16 05:00:05,308 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 05:00:05,309 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 05:00:06,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-16 05:00:06,509 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-16 05:00:06,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 [2023-12-16 05:00:06,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 55.8s TimeCoverageRelationStatistics Valid=135, Invalid=461, Unknown=4, NotChecked=0, Total=600 [2023-12-16 05:00:06,515 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 16 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 05:00:06,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 276 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 05:00:06,516 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 05:00:06,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 05:00:06,516 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-12-16 05:00:06,519 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 05:00:06,523 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 05:00:06,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 05:00:06 BoogieIcfgContainer [2023-12-16 05:00:06,524 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 05:00:06,525 INFO L158 Benchmark]: Toolchain (without parser) took 79356.83ms. Allocated memory was 208.7MB in the beginning and 348.1MB in the end (delta: 139.5MB). Free memory was 169.0MB in the beginning and 245.3MB in the end (delta: -76.4MB). Peak memory consumption was 63.4MB. Max. memory is 8.0GB. [2023-12-16 05:00:06,525 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 208.7MB. Free memory is still 156.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 05:00:06,525 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.81ms. Allocated memory is still 208.7MB. Free memory was 168.7MB in the beginning and 157.3MB in the end (delta: 11.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 05:00:06,525 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.98ms. Allocated memory is still 208.7MB. Free memory was 157.3MB in the beginning and 155.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 05:00:06,525 INFO L158 Benchmark]: Boogie Preprocessor took 39.32ms. Allocated memory is still 208.7MB. Free memory was 155.7MB in the beginning and 154.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 05:00:06,525 INFO L158 Benchmark]: RCFGBuilder took 211.22ms. Allocated memory is still 208.7MB. Free memory was 154.0MB in the beginning and 142.0MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 05:00:06,526 INFO L158 Benchmark]: TraceAbstraction took 78846.41ms. Allocated memory was 208.7MB in the beginning and 348.1MB in the end (delta: 139.5MB). Free memory was 141.1MB in the beginning and 245.3MB in the end (delta: -104.3MB). Peak memory consumption was 36.2MB. Max. memory is 8.0GB. [2023-12-16 05:00:06,526 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 208.7MB. Free memory is still 156.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 219.81ms. Allocated memory is still 208.7MB. Free memory was 168.7MB in the beginning and 157.3MB in the end (delta: 11.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.98ms. Allocated memory is still 208.7MB. Free memory was 157.3MB in the beginning and 155.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.32ms. Allocated memory is still 208.7MB. Free memory was 155.7MB in the beginning and 154.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 211.22ms. Allocated memory is still 208.7MB. Free memory was 154.0MB in the beginning and 142.0MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 78846.41ms. Allocated memory was 208.7MB in the beginning and 348.1MB in the end (delta: 139.5MB). Free memory was 141.1MB in the beginning and 245.3MB in the end (delta: -104.3MB). Peak memory consumption was 36.2MB. Max. memory is 8.0GB. * 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 - TimeoutResultAtElement [Line: 17]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 17). Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 78.8s, OverallIterations: 12, TraceHistogramMax: 24, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 44.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 309 SdHoareTripleChecker+Valid, 7.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 209 mSDsluCounter, 1808 SdHoareTripleChecker+Invalid, 6.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1514 mSDsCounter, 404 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1948 IncrementalHoareTripleChecker+Invalid, 2354 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 404 mSolverCounterUnsat, 294 mSDtfsCounter, 1948 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1268 GetRequests, 1095 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 57.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=11, InterpolantAutomatonStates: 110, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 11 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 31.2s InterpolantComputationTime, 634 NumberOfCodeBlocks, 594 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1230 ConstructedInterpolants, 0 QuantifiedInterpolants, 7889 SizeOfPredicates, 36 NumberOfNonLiveVariables, 1430 ConjunctsInSsa, 276 ConjunctsInUnsatCore, 22 InterpolantComputations, 2 PerfectInterpolantSequences, 5936/6442 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown