/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_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:58:27,438 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:58:27,475 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 04:58:27,478 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:58:27,478 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:58:27,491 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:58:27,491 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:58:27,491 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:58:27,492 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:58:27,492 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:58:27,492 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:58:27,492 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:58:27,493 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:58:27,493 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:58:27,493 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:58:27,493 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:58:27,494 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:58:27,494 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:58:27,494 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:58:27,494 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:58:27,495 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:58:27,495 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:58:27,495 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:58:27,495 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:58:27,496 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:58:27,496 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:58:27,496 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:58:27,496 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:58:27,496 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:58:27,496 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:58:27,497 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:58:27,497 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:58:27,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:58:27,497 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:58:27,497 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:58:27,497 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:58:27,498 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:58:27,498 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:58:27,498 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:58:27,498 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:58:27,498 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:58:27,498 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:58:27,498 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:58:27,498 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:58:27,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:58:27,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:58:27,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:58:27,697 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:58:27,697 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:58:27,697 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound10.c [2023-12-16 04:58:28,787 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:58:28,925 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:58:28,925 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/cohencu-ll_valuebound10.c [2023-12-16 04:58:28,930 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51ec75216/bb149fcacd7f4e6eb27bc7e28801c2f9/FLAG8a14205f3 [2023-12-16 04:58:28,974 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51ec75216/bb149fcacd7f4e6eb27bc7e28801c2f9 [2023-12-16 04:58:28,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:58:28,976 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:58:28,977 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:58:28,977 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:58:28,980 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:58:28,981 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:58:28" (1/1) ... [2023-12-16 04:58:28,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53c34e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:28, skipping insertion in model container [2023-12-16 04:58:28,981 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:58:28" (1/1) ... [2023-12-16 04:58:29,000 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:58:29,105 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_valuebound10.c[588,601] [2023-12-16 04:58:29,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:58:29,125 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:58:29,138 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_valuebound10.c[588,601] [2023-12-16 04:58:29,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:58:29,163 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:58:29,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:29 WrapperNode [2023-12-16 04:58:29,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:58:29,165 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:58:29,165 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:58:29,165 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:58:29,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:29" (1/1) ... [2023-12-16 04:58:29,182 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:29" (1/1) ... [2023-12-16 04:58:29,193 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-12-16 04:58:29,194 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:58:29,194 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:58:29,194 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:58:29,194 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:58:29,208 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:29" (1/1) ... [2023-12-16 04:58:29,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:29" (1/1) ... [2023-12-16 04:58:29,211 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:29" (1/1) ... [2023-12-16 04:58:29,222 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 04:58:29,223 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:29" (1/1) ... [2023-12-16 04:58:29,223 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:29" (1/1) ... [2023-12-16 04:58:29,231 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:29" (1/1) ... [2023-12-16 04:58:29,236 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:29" (1/1) ... [2023-12-16 04:58:29,240 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:29" (1/1) ... [2023-12-16 04:58:29,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:29" (1/1) ... [2023-12-16 04:58:29,241 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:58:29,242 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:58:29,242 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:58:29,242 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:58:29,242 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:29" (1/1) ... [2023-12-16 04:58:29,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:58:29,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:58:29,268 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 04:58:29,286 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 04:58:29,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:58:29,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:58:29,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:58:29,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:58:29,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-16 04:58:29,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-16 04:58:29,329 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:58:29,330 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:58:29,440 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:58:29,466 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:58:29,466 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 04:58:29,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:58:29 BoogieIcfgContainer [2023-12-16 04:58:29,466 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:58:29,468 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:58:29,468 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:58:29,471 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:58:29,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:58:28" (1/3) ... [2023-12-16 04:58:29,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81c2fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:58:29, skipping insertion in model container [2023-12-16 04:58:29,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:58:29" (2/3) ... [2023-12-16 04:58:29,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@81c2fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:58:29, skipping insertion in model container [2023-12-16 04:58:29,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:58:29" (3/3) ... [2023-12-16 04:58:29,473 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound10.c [2023-12-16 04:58:29,486 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:58:29,487 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 04:58:29,518 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:58:29,523 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;@5d423559, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:58:29,523 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 04:58:29,526 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 04:58:29,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-16 04:58:29,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:29,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:58:29,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:29,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:29,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2080946738, now seen corresponding path program 1 times [2023-12-16 04:58:29,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:29,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736256183] [2023-12-16 04:58:29,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:29,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:58:29,687 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 04:58:29,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:58:29,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736256183] [2023-12-16 04:58:29,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736256183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:58:29,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:58:29,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 04:58:29,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127931233] [2023-12-16 04:58:29,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:58:29,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 04:58:29,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:58:29,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 04:58:29,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 04:58:29,761 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 04:58:29,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:58:29,787 INFO L93 Difference]: Finished difference Result 46 states and 84 transitions. [2023-12-16 04:58:29,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 04:58:29,789 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 04:58:29,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:58:29,794 INFO L225 Difference]: With dead ends: 46 [2023-12-16 04:58:29,794 INFO L226 Difference]: Without dead ends: 22 [2023-12-16 04:58:29,797 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 04:58:29,800 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 04:58:29,801 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 04:58:29,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-12-16 04:58:29,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-12-16 04:58:29,823 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 04:58:29,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 32 transitions. [2023-12-16 04:58:29,825 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 32 transitions. Word has length 8 [2023-12-16 04:58:29,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:58:29,825 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 32 transitions. [2023-12-16 04:58:29,826 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 04:58:29,826 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2023-12-16 04:58:29,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-16 04:58:29,826 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:29,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:58:29,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 04:58:29,827 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:29,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:29,827 INFO L85 PathProgramCache]: Analyzing trace with hash -304390244, now seen corresponding path program 1 times [2023-12-16 04:58:29,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:29,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682669012] [2023-12-16 04:58:29,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:29,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:58:29,961 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 04:58:29,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:58:29,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682669012] [2023-12-16 04:58:29,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682669012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:58:29,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:58:29,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:58:29,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280745872] [2023-12-16 04:58:29,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:58:29,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:58:29,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:58:29,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:58:29,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:58:29,964 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 04:58:30,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:58:30,021 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2023-12-16 04:58:30,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-16 04:58:30,021 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 04:58:30,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:58:30,023 INFO L225 Difference]: With dead ends: 28 [2023-12-16 04:58:30,023 INFO L226 Difference]: Without dead ends: 26 [2023-12-16 04:58:30,023 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 04:58:30,024 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:58:30,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 78 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:58:30,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-16 04:58:30,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-16 04:58:30,045 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 04:58:30,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2023-12-16 04:58:30,050 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 8 [2023-12-16 04:58:30,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:58:30,051 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2023-12-16 04:58:30,051 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 04:58:30,051 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2023-12-16 04:58:30,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-16 04:58:30,052 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:30,052 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:58:30,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 04:58:30,053 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:30,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:30,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1112146385, now seen corresponding path program 1 times [2023-12-16 04:58:30,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:30,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165827789] [2023-12-16 04:58:30,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:30,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:30,073 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:58:30,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1969308371] [2023-12-16 04:58:30,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:30,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:30,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:58:30,081 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 04:58:30,120 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 04:58:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:58:30,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 04:58:30,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:58:30,294 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 04:58:30,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:58:30,409 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 04:58:30,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:58:30,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165827789] [2023-12-16 04:58:30,409 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:58:30,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969308371] [2023-12-16 04:58:30,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969308371] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:58:30,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:58:30,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-12-16 04:58:30,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664128996] [2023-12-16 04:58:30,413 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:58:30,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 04:58:30,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:58:30,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 04:58:30,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:58:30,416 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 04:58:30,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:58:30,625 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2023-12-16 04:58:30,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:58:30,626 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 04:58:30,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:58:30,628 INFO L225 Difference]: With dead ends: 51 [2023-12-16 04:58:30,628 INFO L226 Difference]: Without dead ends: 49 [2023-12-16 04:58:30,628 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 04:58:30,629 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 04:58:30,629 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 04:58:30,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-12-16 04:58:30,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2023-12-16 04:58:30,640 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 04:58:30,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 64 transitions. [2023-12-16 04:58:30,641 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 64 transitions. Word has length 13 [2023-12-16 04:58:30,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:58:30,642 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 64 transitions. [2023-12-16 04:58:30,642 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 04:58:30,642 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 64 transitions. [2023-12-16 04:58:30,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-16 04:58:30,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:30,642 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:58:30,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 04:58:30,846 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 04:58:30,847 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:30,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:30,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1589877564, now seen corresponding path program 1 times [2023-12-16 04:58:30,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:30,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119290559] [2023-12-16 04:58:30,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:30,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:30,855 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:58:30,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [166653032] [2023-12-16 04:58:30,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:30,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:30,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:58:30,868 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 04:58:30,888 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 04:58:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:58:30,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-16 04:58:30,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:58:30,977 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 04:58:30,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:58:31,063 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 04:58:31,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:58:31,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119290559] [2023-12-16 04:58:31,063 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:58:31,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166653032] [2023-12-16 04:58:31,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166653032] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:58:31,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:58:31,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-12-16 04:58:31,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182760059] [2023-12-16 04:58:31,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:58:31,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 04:58:31,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:58:31,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 04:58:31,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:58:31,065 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 04:58:31,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:58:31,285 INFO L93 Difference]: Finished difference Result 53 states and 70 transitions. [2023-12-16 04:58:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:58:31,285 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 04:58:31,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:58:31,286 INFO L225 Difference]: With dead ends: 53 [2023-12-16 04:58:31,286 INFO L226 Difference]: Without dead ends: 51 [2023-12-16 04:58:31,286 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 04:58:31,287 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:58:31,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 70 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:58:31,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-16 04:58:31,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2023-12-16 04:58:31,297 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 04:58:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 67 transitions. [2023-12-16 04:58:31,298 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 67 transitions. Word has length 18 [2023-12-16 04:58:31,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:58:31,298 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 67 transitions. [2023-12-16 04:58:31,298 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 04:58:31,298 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 67 transitions. [2023-12-16 04:58:31,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-16 04:58:31,299 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:31,299 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:58:31,317 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 04:58:31,516 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 04:58:31,517 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:31,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:31,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1560032783, now seen corresponding path program 1 times [2023-12-16 04:58:31,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:31,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374951802] [2023-12-16 04:58:31,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:31,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:31,527 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:58:31,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2098082008] [2023-12-16 04:58:31,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:31,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:31,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:58:31,534 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 04:58:31,552 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 04:58:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:58:31,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-16 04:58:31,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:58:31,644 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 04:58:31,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:58:32,292 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 04:58:32,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:58:32,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374951802] [2023-12-16 04:58:32,292 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:58:32,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098082008] [2023-12-16 04:58:32,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098082008] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:58:32,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:58:32,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-12-16 04:58:32,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078567138] [2023-12-16 04:58:32,293 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:58:32,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 04:58:32,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:58:32,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 04:58:32,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:58:32,294 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 04:58:32,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:58:32,918 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2023-12-16 04:58:32,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-16 04:58:32,918 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 04:58:32,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:58:32,919 INFO L225 Difference]: With dead ends: 66 [2023-12-16 04:58:32,919 INFO L226 Difference]: Without dead ends: 57 [2023-12-16 04:58:32,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:58:32,920 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 16 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:58:32,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 95 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 04:58:32,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-12-16 04:58:32,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-12-16 04:58:32,938 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 04:58:32,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2023-12-16 04:58:32,939 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 23 [2023-12-16 04:58:32,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:58:32,939 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2023-12-16 04:58:32,940 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 04:58:32,940 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2023-12-16 04:58:32,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-16 04:58:32,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:32,940 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 04:58:32,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-16 04:58:33,143 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 04:58:33,144 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:33,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:33,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1335110159, now seen corresponding path program 1 times [2023-12-16 04:58:33,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:33,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342874690] [2023-12-16 04:58:33,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:33,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:33,155 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:58:33,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [975127521] [2023-12-16 04:58:33,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:33,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:33,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:58:33,156 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 04:58:33,173 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 04:58:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:58:33,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-16 04:58:33,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:58:33,307 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 04:58:33,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:58:33,411 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 04:58:33,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:58:33,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342874690] [2023-12-16 04:58:33,411 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:58:33,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975127521] [2023-12-16 04:58:33,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975127521] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:58:33,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:58:33,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-12-16 04:58:33,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088494621] [2023-12-16 04:58:33,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:58:33,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 04:58:33,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:58:33,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 04:58:33,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:58:33,413 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 04:58:37,586 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 04:58:37,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:58:37,617 INFO L93 Difference]: Finished difference Result 81 states and 98 transitions. [2023-12-16 04:58:37,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 04:58:37,617 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 04:58:37,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:58:37,618 INFO L225 Difference]: With dead ends: 81 [2023-12-16 04:58:37,618 INFO L226 Difference]: Without dead ends: 79 [2023-12-16 04:58:37,619 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 04:58:37,619 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 04:58:37,619 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 04:58:37,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-16 04:58:37,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2023-12-16 04:58:37,634 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 04:58:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 95 transitions. [2023-12-16 04:58:37,635 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 95 transitions. Word has length 45 [2023-12-16 04:58:37,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:58:37,635 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 95 transitions. [2023-12-16 04:58:37,635 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 04:58:37,635 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 95 transitions. [2023-12-16 04:58:37,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 04:58:37,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:37,636 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 04:58:37,643 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 04:58:37,841 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 04:58:37,842 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:37,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:37,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1958076911, now seen corresponding path program 2 times [2023-12-16 04:58:37,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:37,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530350854] [2023-12-16 04:58:37,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:37,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:37,849 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:58:37,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393851158] [2023-12-16 04:58:37,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 04:58:37,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:37,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:58:37,851 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 04:58:37,859 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 04:58:37,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 04:58:37,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:58:37,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-16 04:58:37,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:58:38,003 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 04:58:38,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:58:38,374 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 04:58:38,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:58:38,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530350854] [2023-12-16 04:58:38,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:58:38,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393851158] [2023-12-16 04:58:38,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393851158] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:58:38,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:58:38,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-12-16 04:58:38,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271252868] [2023-12-16 04:58:38,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:58:38,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-16 04:58:38,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:58:38,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-16 04:58:38,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-12-16 04:58:38,376 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 04:58:38,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:58:38,566 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2023-12-16 04:58:38,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-16 04:58:38,566 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 04:58:38,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:58:38,567 INFO L225 Difference]: With dead ends: 85 [2023-12-16 04:58:38,567 INFO L226 Difference]: Without dead ends: 80 [2023-12-16 04:58:38,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:58:38,568 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 04:58:38,568 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 04:58:38,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-16 04:58:38,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-12-16 04:58:38,581 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 04:58:38,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2023-12-16 04:58:38,582 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 55 [2023-12-16 04:58:38,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:58:38,582 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2023-12-16 04:58:38,582 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 04:58:38,583 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2023-12-16 04:58:38,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 04:58:38,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:38,583 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 04:58:38,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-16 04:58:38,788 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 04:58:38,789 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:38,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:38,789 INFO L85 PathProgramCache]: Analyzing trace with hash 811423347, now seen corresponding path program 1 times [2023-12-16 04:58:38,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:38,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390530362] [2023-12-16 04:58:38,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:38,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:38,798 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:58:38,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1044022366] [2023-12-16 04:58:38,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:38,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:38,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:58:38,800 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 04:58:38,813 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 04:58:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:58:38,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-16 04:58:38,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:58:39,043 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 04:58:39,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:58:39,174 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 04:58:39,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:58:39,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390530362] [2023-12-16 04:58:39,174 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:58:39,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044022366] [2023-12-16 04:58:39,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044022366] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:58:39,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:58:39,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2023-12-16 04:58:39,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195025447] [2023-12-16 04:58:39,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:58:39,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 04:58:39,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:58:39,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 04:58:39,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:58:39,176 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 04:58:39,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:58:39,416 INFO L93 Difference]: Finished difference Result 94 states and 113 transitions. [2023-12-16 04:58:39,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 04:58:39,416 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 04:58:39,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:58:39,417 INFO L225 Difference]: With dead ends: 94 [2023-12-16 04:58:39,417 INFO L226 Difference]: Without dead ends: 92 [2023-12-16 04:58:39,418 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 04:58:39,418 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 04:58:39,418 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 04:58:39,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-12-16 04:58:39,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2023-12-16 04:58:39,460 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 04:58:39,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2023-12-16 04:58:39,461 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 66 [2023-12-16 04:58:39,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:58:39,461 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2023-12-16 04:58:39,462 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 04:58:39,462 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2023-12-16 04:58:39,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-16 04:58:39,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:39,462 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 04:58:39,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 04:58:39,683 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 04:58:39,683 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:39,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:39,684 INFO L85 PathProgramCache]: Analyzing trace with hash 462308408, now seen corresponding path program 1 times [2023-12-16 04:58:39,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:39,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427107835] [2023-12-16 04:58:39,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:39,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:39,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:58:39,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1949222172] [2023-12-16 04:58:39,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:39,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:39,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:58:39,721 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 04:58:39,749 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 04:58:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:58:39,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-16 04:58:39,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:58:39,945 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 04:58:39,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:58:40,113 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 04:58:40,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:58:40,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427107835] [2023-12-16 04:58:40,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:58:40,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949222172] [2023-12-16 04:58:40,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949222172] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:58:40,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:58:40,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2023-12-16 04:58:40,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259675111] [2023-12-16 04:58:40,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:58:40,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-16 04:58:40,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:58:40,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-16 04:58:40,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-16 04:58:40,116 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 04:58:40,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:58:40,495 INFO L93 Difference]: Finished difference Result 123 states and 145 transitions. [2023-12-16 04:58:40,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 04:58:40,496 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 04:58:40,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:58:40,497 INFO L225 Difference]: With dead ends: 123 [2023-12-16 04:58:40,497 INFO L226 Difference]: Without dead ends: 114 [2023-12-16 04:58:40,497 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 04:58:40,497 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 20 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 04:58:40,498 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 04:58:40,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-16 04:58:40,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2023-12-16 04:58:40,519 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 04:58:40,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 133 transitions. [2023-12-16 04:58:40,520 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 133 transitions. Word has length 71 [2023-12-16 04:58:40,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:58:40,520 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 133 transitions. [2023-12-16 04:58:40,520 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 04:58:40,520 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 133 transitions. [2023-12-16 04:58:40,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-16 04:58:40,521 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:40,521 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 04:58:40,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-16 04:58:40,726 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 04:58:40,727 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:40,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:40,727 INFO L85 PathProgramCache]: Analyzing trace with hash 978023919, now seen corresponding path program 3 times [2023-12-16 04:58:40,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:40,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852928449] [2023-12-16 04:58:40,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:40,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:40,733 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:58:40,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1142708163] [2023-12-16 04:58:40,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-16 04:58:40,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:40,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:58:40,734 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 04:58:40,762 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 04:58:40,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-16 04:58:40,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:58:40,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-16 04:58:40,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:58:40,928 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 04:58:40,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:58:41,830 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 04:58:41,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:58:41,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852928449] [2023-12-16 04:58:41,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:58:41,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142708163] [2023-12-16 04:58:41,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142708163] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:58:41,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:58:41,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-12-16 04:58:41,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112094011] [2023-12-16 04:58:41,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:58:41,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-16 04:58:41,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:58:41,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-16 04:58:41,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-12-16 04:58:41,832 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 04:58:44,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:58:44,172 INFO L93 Difference]: Finished difference Result 133 states and 150 transitions. [2023-12-16 04:58:44,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 04:58:44,174 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 04:58:44,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:58:44,175 INFO L225 Difference]: With dead ends: 133 [2023-12-16 04:58:44,175 INFO L226 Difference]: Without dead ends: 123 [2023-12-16 04:58:44,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2023-12-16 04:58:44,176 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 20 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 1.8s IncrementalHoareTripleChecker+Time [2023-12-16 04:58:44,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 189 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-16 04:58:44,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-12-16 04:58:44,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2023-12-16 04:58:44,223 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 04:58:44,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 137 transitions. [2023-12-16 04:58:44,223 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 137 transitions. Word has length 77 [2023-12-16 04:58:44,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:58:44,224 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 137 transitions. [2023-12-16 04:58:44,224 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 04:58:44,224 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 137 transitions. [2023-12-16 04:58:44,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-16 04:58:44,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:44,225 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 04:58:44,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-16 04:58:44,429 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 04:58:44,430 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:44,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:44,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1954081427, now seen corresponding path program 2 times [2023-12-16 04:58:44,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:44,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847718443] [2023-12-16 04:58:44,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:44,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:44,454 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:58:44,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957019767] [2023-12-16 04:58:44,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 04:58:44,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:44,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:58:44,464 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 04:58:44,466 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 04:58:44,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 04:58:44,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:58:44,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-16 04:58:44,533 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:58:44,791 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 101 proven. 43 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2023-12-16 04:58:44,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:58:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 122 proven. 1 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2023-12-16 04:58:46,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:58:46,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847718443] [2023-12-16 04:58:46,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:58:46,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957019767] [2023-12-16 04:58:46,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957019767] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:58:46,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:58:46,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 17 [2023-12-16 04:58:46,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030940203] [2023-12-16 04:58:46,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:58:46,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-16 04:58:46,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:58:46,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-16 04:58:46,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-12-16 04:58:46,151 INFO L87 Difference]: Start difference. First operand 123 states and 137 transitions. Second operand has 17 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 10 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2023-12-16 04:58:46,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:58:46,865 INFO L93 Difference]: Finished difference Result 142 states and 152 transitions. [2023-12-16 04:58:46,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 04:58:46,865 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 10 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 120 [2023-12-16 04:58:46,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:58:46,866 INFO L225 Difference]: With dead ends: 142 [2023-12-16 04:58:46,866 INFO L226 Difference]: Without dead ends: 140 [2023-12-16 04:58:46,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2023-12-16 04:58:46,867 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 13 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 04:58:46,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 209 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 04:58:46,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-12-16 04:58:46,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2023-12-16 04:58:46,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 83 states have (on average 1.036144578313253) internal successors, (86), 85 states have internal predecessors, (86), 32 states have call successors, (32), 23 states have call predecessors, (32), 23 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-16 04:58:46,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 149 transitions. [2023-12-16 04:58:46,889 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 149 transitions. Word has length 120 [2023-12-16 04:58:46,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:58:46,889 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 149 transitions. [2023-12-16 04:58:46,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 10 states have call successors, (34), 3 states have call predecessors, (34), 2 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2023-12-16 04:58:46,890 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 149 transitions. [2023-12-16 04:58:46,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-12-16 04:58:46,890 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:58:46,890 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 04:58:46,899 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 04:58:47,095 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 04:58:47,096 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:58:47,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:58:47,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1568288115, now seen corresponding path program 1 times [2023-12-16 04:58:47,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:58:47,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939112767] [2023-12-16 04:58:47,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:47,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:58:47,111 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:58:47,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764713148] [2023-12-16 04:58:47,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:58:47,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:58:47,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:58:47,113 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 04:58:47,120 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 04:58:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:58:47,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-16 04:58:47,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:58:47,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 95 proven. 119 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2023-12-16 04:58:47,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:59:12,582 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse1 (* |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|)) (.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~z~0#1|))) (or (= (+ (* (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 2) (* 2 .cse0) (* 5 .cse1) 38) (+ (* |c_ULTIMATE.start_main_~y~0#1| 94) (* (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) 3) (* 23 |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| 54))) (not (= (+ 18 (* .cse1 2) .cse0) (+ (* |c_ULTIMATE.start_main_~y~0#1| 36) (* |c_ULTIMATE.start_main_~x~0#1| 18) (* |c_ULTIMATE.start_main_~z~0#1| 10)))))) is different from true [2023-12-16 04:59:13,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1100 backedges. 97 proven. 96 refuted. 0 times theorem prover too weak. 886 trivial. 21 not checked. [2023-12-16 04:59:13,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:59:13,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939112767] [2023-12-16 04:59:13,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:59:13,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764713148] [2023-12-16 04:59:13,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764713148] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:59:13,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:59:13,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-12-16 04:59:13,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184310759] [2023-12-16 04:59:13,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:59:13,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-16 04:59:13,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:59:13,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-16 04:59:13,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=237, Unknown=3, NotChecked=32, Total=342 [2023-12-16 04:59:13,492 INFO L87 Difference]: Start difference. First operand 139 states and 149 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 16 states have internal predecessors, (33), 11 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 9 states have call predecessors, (46), 11 states have call successors, (46) [2023-12-16 04:59:24,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-12-16 04:59:28,532 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse1 (* |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|))) (let ((.cse3 (* (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 2)) (.cse5 (* (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) 3)) (.cse4 (* .cse1 2)) (.cse2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~z~0#1|)) (.cse0 (* |c_ULTIMATE.start_main_~x~0#1| 18))) (and (or (not (= (+ (* |c_ULTIMATE.start_main_~y~0#1| 24) (* |c_ULTIMATE.start_main_~z~0#1| 4) .cse0) (+ .cse1 6 .cse2))) (= (+ .cse3 8 .cse4 .cse2) (+ (* |c_ULTIMATE.start_main_~x~0#1| 36) .cse5 (* 7 |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 46)))) (or (not (= (+ (* .cse1 3) 30 .cse2) (+ (* |c_ULTIMATE.start_main_~y~0#1| 48) .cse0 (* 16 |c_ULTIMATE.start_main_~z~0#1|)))) (not (= |c_ULTIMATE.start_main_~z~0#1| (+ 6 (* |c_ULTIMATE.start_main_~n~0#1| 6)))) (= (+ (* 3 .cse2) .cse3 80 (* .cse1 9)) (+ (* 154 |c_ULTIMATE.start_main_~y~0#1|) .cse5 (* |c_ULTIMATE.start_main_~x~0#1| 72) (* |c_ULTIMATE.start_main_~z~0#1| 45)))) (or (not (= (+ (* |c_ULTIMATE.start_main_~y~0#1| 12) 6 .cse0) (+ (* 2 |c_ULTIMATE.start_main_~z~0#1|) .cse2))) (= (+ (* 3 |c_ULTIMATE.start_main_~z~0#1|) .cse3) (+ (* |c_ULTIMATE.start_main_~y~0#1| 10) .cse5 .cse0 10))) (or (= (+ .cse3 (* 2 .cse2) (* 5 .cse1) 38) (+ (* |c_ULTIMATE.start_main_~y~0#1| 94) .cse5 (* 23 |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| 54))) (not (= (+ 18 .cse4 .cse2) (+ (* |c_ULTIMATE.start_main_~y~0#1| 36) .cse0 (* |c_ULTIMATE.start_main_~z~0#1| 10)))))))) is different from true [2023-12-16 04:59:28,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:59:28,536 INFO L93 Difference]: Finished difference Result 159 states and 170 transitions. [2023-12-16 04:59:28,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-16 04:59:28,536 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 16 states have internal predecessors, (33), 11 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 9 states have call predecessors, (46), 11 states have call successors, (46) Word has length 130 [2023-12-16 04:59:28,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:59:28,537 INFO L225 Difference]: With dead ends: 159 [2023-12-16 04:59:28,537 INFO L226 Difference]: Without dead ends: 142 [2023-12-16 04:59:28,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 241 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=122, Invalid=387, Unknown=5, NotChecked=86, Total=600 [2023-12-16 04:59:28,538 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 18 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:59:28,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 222 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 332 Invalid, 0 Unknown, 81 Unchecked, 3.1s Time] [2023-12-16 04:59:28,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-12-16 04:59:28,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2023-12-16 04:59:28,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 85 states have (on average 1.011764705882353) internal successors, (86), 85 states have internal predecessors, (86), 28 states have call successors, (28), 24 states have call predecessors, (28), 23 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-12-16 04:59:28,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 141 transitions. [2023-12-16 04:59:28,562 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 141 transitions. Word has length 130 [2023-12-16 04:59:28,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:59:28,562 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 141 transitions. [2023-12-16 04:59:28,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 16 states have internal predecessors, (33), 11 states have call successors, (48), 3 states have call predecessors, (48), 2 states have return successors, (46), 9 states have call predecessors, (46), 11 states have call successors, (46) [2023-12-16 04:59:28,562 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 141 transitions. [2023-12-16 04:59:28,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-16 04:59:28,563 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:59:28,563 INFO L195 NwaCegarLoop]: trace histogram [28, 27, 27, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:59:28,568 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 04:59:28,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-16 04:59:28,768 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:59:28,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:59:28,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1567024997, now seen corresponding path program 2 times [2023-12-16 04:59:28,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:59:28,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860202017] [2023-12-16 04:59:28,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:59:28,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:59:28,778 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-16 04:59:28,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747271153] [2023-12-16 04:59:28,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-16 04:59:28,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:59:28,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:59:28,780 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:59:28,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-16 04:59:28,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-16 04:59:28,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-16 04:59:28,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-16 04:59:28,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:59:29,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 128 proven. 74 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2023-12-16 04:59:29,140 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:59:29,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 128 proven. 67 refuted. 0 times theorem prover too weak. 1333 trivial. 0 not checked. [2023-12-16 04:59:29,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:59:29,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860202017] [2023-12-16 04:59:29,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-16 04:59:29,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747271153] [2023-12-16 04:59:29,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747271153] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-16 04:59:29,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:59:29,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 21 [2023-12-16 04:59:29,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47316180] [2023-12-16 04:59:29,703 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:59:29,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-16 04:59:29,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:59:29,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-16 04:59:29,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-12-16 04:59:29,704 INFO L87 Difference]: Start difference. First operand 137 states and 141 transitions. Second operand has 21 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 13 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (49), 11 states have call predecessors, (49), 13 states have call successors, (49) [2023-12-16 04:59:30,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:59:30,118 INFO L93 Difference]: Finished difference Result 163 states and 171 transitions. [2023-12-16 04:59:30,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-16 04:59:30,119 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 13 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (49), 11 states have call predecessors, (49), 13 states have call successors, (49) Word has length 152 [2023-12-16 04:59:30,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:59:30,119 INFO L225 Difference]: With dead ends: 163 [2023-12-16 04:59:30,119 INFO L226 Difference]: Without dead ends: 0 [2023-12-16 04:59:30,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2023-12-16 04:59:30,120 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 13 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-16 04:59:30,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 297 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-16 04:59:30,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-16 04:59:30,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-16 04:59:30,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 04:59:30,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-16 04:59:30,121 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 152 [2023-12-16 04:59:30,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:59:30,121 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-16 04:59:30,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 13 states have call successors, (51), 3 states have call predecessors, (51), 2 states have return successors, (49), 11 states have call predecessors, (49), 13 states have call successors, (49) [2023-12-16 04:59:30,121 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-16 04:59:30,121 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-16 04:59:30,123 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 04:59:30,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-16 04:59:30,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-16 04:59:30,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-16 04:59:39,945 WARN L293 SmtUtils]: Spent 9.38s on a formula simplification. DAG size of input: 152 DAG size of output: 47 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) Received shutdown request... [2023-12-16 04:59:47,528 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 04:59:48,729 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 04:59:48,734 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Not enough levels on assertion stack at de.uni_freiburg.informatik.ultimate.logic.NoopScript.pop(NoopScript.java:272) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:138) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.pop(UndoableWrapperScript.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.restore(UndoableWrapperScript.java:87) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:233) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter(HoareAnnotationComposer.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.(HoareAnnotationComposer.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeIcfgHoareAnnotation(NwaCegarLoop.java:539) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop$CegarLoopResultBuilder.getResult(AbstractCegarLoop.java:873) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:416) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-12-16 04:59:48,737 INFO L158 Benchmark]: Toolchain (without parser) took 79761.04ms. Allocated memory was 294.6MB in the beginning and 358.6MB in the end (delta: 64.0MB). Free memory was 262.7MB in the beginning and 284.3MB in the end (delta: -21.5MB). Peak memory consumption was 211.2MB. Max. memory is 8.0GB. [2023-12-16 04:59:48,737 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 201.3MB. Free memory is still 149.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:59:48,737 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.22ms. Allocated memory is still 294.6MB. Free memory was 262.3MB in the beginning and 251.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-16 04:59:48,738 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.06ms. Allocated memory is still 294.6MB. Free memory was 250.7MB in the beginning and 249.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-16 04:59:48,738 INFO L158 Benchmark]: Boogie Preprocessor took 47.09ms. Allocated memory is still 294.6MB. Free memory was 249.2MB in the beginning and 247.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-16 04:59:48,738 INFO L158 Benchmark]: RCFGBuilder took 224.76ms. Allocated memory is still 294.6MB. Free memory was 247.6MB in the beginning and 235.5MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-16 04:59:48,738 INFO L158 Benchmark]: TraceAbstraction took 79269.16ms. Allocated memory was 294.6MB in the beginning and 358.6MB in the end (delta: 64.0MB). Free memory was 234.5MB in the beginning and 284.3MB in the end (delta: -49.7MB). Peak memory consumption was 182.9MB. Max. memory is 8.0GB. [2023-12-16 04:59:48,739 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 201.3MB. Free memory is still 149.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 187.22ms. Allocated memory is still 294.6MB. Free memory was 262.3MB in the beginning and 251.2MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.06ms. Allocated memory is still 294.6MB. Free memory was 250.7MB in the beginning and 249.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.09ms. Allocated memory is still 294.6MB. Free memory was 249.2MB in the beginning and 247.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 224.76ms. Allocated memory is still 294.6MB. Free memory was 247.6MB in the beginning and 235.5MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 79269.16ms. Allocated memory was 294.6MB in the beginning and 358.6MB in the end (delta: 64.0MB). Free memory was 234.5MB in the beginning and 284.3MB in the end (delta: -49.7MB). Peak memory consumption was 182.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Not enough levels on assertion stack de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Not enough levels on assertion stack: de.uni_freiburg.informatik.ultimate.logic.NoopScript.pop(NoopScript.java:272) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-12-16 04:59:48,744 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 04:59:48,746 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 Completed graceful shutdown