/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/ps5-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 08:23:39,072 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 08:23:39,118 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 08:23:39,121 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 08:23:39,121 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 08:23:39,146 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 08:23:39,146 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 08:23:39,147 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 08:23:39,147 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 08:23:39,150 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 08:23:39,150 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 08:23:39,151 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 08:23:39,151 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 08:23:39,152 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 08:23:39,152 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 08:23:39,152 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 08:23:39,152 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 08:23:39,152 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 08:23:39,153 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 08:23:39,153 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 08:23:39,153 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 08:23:39,154 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 08:23:39,154 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 08:23:39,154 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 08:23:39,154 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 08:23:39,154 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 08:23:39,154 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 08:23:39,155 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 08:23:39,155 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 08:23:39,155 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 08:23:39,156 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 08:23:39,156 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 08:23:39,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 08:23:39,156 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 08:23:39,156 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 08:23:39,156 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 08:23:39,156 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 08:23:39,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 08:23:39,157 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 08:23:39,157 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 08:23:39,157 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 08:23:39,157 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 08:23:39,157 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 08:23:39,157 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 08:23:39,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 08:23:39,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 08:23:39,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 08:23:39,361 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 08:23:39,361 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 08:23:39,361 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound5.c [2023-12-21 08:23:40,377 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 08:23:40,505 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 08:23:40,506 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps5-ll_valuebound5.c [2023-12-21 08:23:40,510 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd82da2d3/1874fabee0e14d81bae94b1ca0f18587/FLAG4a24a4c4a [2023-12-21 08:23:40,522 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd82da2d3/1874fabee0e14d81bae94b1ca0f18587 [2023-12-21 08:23:40,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 08:23:40,526 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 08:23:40,528 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 08:23:40,528 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 08:23:40,531 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 08:23:40,532 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:23:40" (1/1) ... [2023-12-21 08:23:40,532 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@258d3339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:23:40, skipping insertion in model container [2023-12-21 08:23:40,533 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:23:40" (1/1) ... [2023-12-21 08:23:40,552 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 08:23:40,651 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/ps5-ll_valuebound5.c[458,471] [2023-12-21 08:23:40,661 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 08:23:40,668 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 08:23:40,677 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/ps5-ll_valuebound5.c[458,471] [2023-12-21 08:23:40,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 08:23:40,691 INFO L206 MainTranslator]: Completed translation [2023-12-21 08:23:40,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:23:40 WrapperNode [2023-12-21 08:23:40,691 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 08:23:40,694 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 08:23:40,695 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 08:23:40,695 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 08:23:40,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:23:40" (1/1) ... [2023-12-21 08:23:40,703 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:23:40" (1/1) ... [2023-12-21 08:23:40,713 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2023-12-21 08:23:40,714 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 08:23:40,714 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 08:23:40,714 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 08:23:40,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 08:23:40,720 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:23:40" (1/1) ... [2023-12-21 08:23:40,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:23:40" (1/1) ... [2023-12-21 08:23:40,721 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:23:40" (1/1) ... [2023-12-21 08:23:40,736 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]. [2023-12-21 08:23:40,736 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:23:40" (1/1) ... [2023-12-21 08:23:40,736 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:23:40" (1/1) ... [2023-12-21 08:23:40,738 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:23:40" (1/1) ... [2023-12-21 08:23:40,740 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:23:40" (1/1) ... [2023-12-21 08:23:40,740 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:23:40" (1/1) ... [2023-12-21 08:23:40,741 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:23:40" (1/1) ... [2023-12-21 08:23:40,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 08:23:40,742 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 08:23:40,742 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 08:23:40,742 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 08:23:40,743 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:23:40" (1/1) ... [2023-12-21 08:23:40,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 08:23:40,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:23:40,764 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) [2023-12-21 08:23:40,800 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 [2023-12-21 08:23:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 08:23:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 08:23:40,802 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 08:23:40,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 08:23:40,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 08:23:40,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 08:23:40,804 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-21 08:23:40,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-21 08:23:40,847 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 08:23:40,849 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 08:23:40,940 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 08:23:40,956 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 08:23:40,956 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 08:23:40,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:23:40 BoogieIcfgContainer [2023-12-21 08:23:40,957 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 08:23:40,959 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 08:23:40,959 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 08:23:40,961 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 08:23:40,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 08:23:40" (1/3) ... [2023-12-21 08:23:40,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@692a2fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:23:40, skipping insertion in model container [2023-12-21 08:23:40,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:23:40" (2/3) ... [2023-12-21 08:23:40,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@692a2fcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:23:40, skipping insertion in model container [2023-12-21 08:23:40,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:23:40" (3/3) ... [2023-12-21 08:23:40,963 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound5.c [2023-12-21 08:23:40,976 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 08:23:40,977 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 08:23:41,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 08:23:41,013 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;@77a393f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 08:23:41,013 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 08:23:41,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-21 08:23:41,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 08:23:41,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:23:41,022 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:23:41,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:23:41,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:23:41,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1419667615, now seen corresponding path program 1 times [2023-12-21 08:23:41,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:23:41,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333694502] [2023-12-21 08:23:41,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:23:41,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:23:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:23:41,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:23:41,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333694502] [2023-12-21 08:23:41,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-21 08:23:41,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257966909] [2023-12-21 08:23:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:23:41,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:23:41,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:23:41,115 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) [2023-12-21 08:23:41,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 08:23:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:23:41,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 08:23:41,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:23:41,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 08:23:41,193 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:23:41,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257966909] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:23:41,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:23:41,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 08:23:41,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177989110] [2023-12-21 08:23:41,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:23:41,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 08:23:41,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:23:41,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 08:23:41,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 08:23:41,221 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 08:23:41,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:23:41,259 INFO L93 Difference]: Finished difference Result 40 states and 58 transitions. [2023-12-21 08:23:41,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 08:23:41,262 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-12-21 08:23:41,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:23:41,267 INFO L225 Difference]: With dead ends: 40 [2023-12-21 08:23:41,267 INFO L226 Difference]: Without dead ends: 19 [2023-12-21 08:23:41,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 08:23:41,275 INFO L413 NwaCegarLoop]: 22 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, 22 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 [2023-12-21 08:23:41,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:23:41,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-12-21 08:23:41,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-12-21 08:23:41,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-12-21 08:23:41,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2023-12-21 08:23:41,304 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 17 [2023-12-21 08:23:41,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:23:41,305 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2023-12-21 08:23:41,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-21 08:23:41,305 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2023-12-21 08:23:41,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 08:23:41,306 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:23:41,307 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:23:41,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 08:23:41,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-21 08:23:41,511 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:23:41,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:23:41,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1758174245, now seen corresponding path program 1 times [2023-12-21 08:23:41,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:23:41,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557356816] [2023-12-21 08:23:41,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:23:41,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:23:41,523 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 08:23:41,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1053133164] [2023-12-21 08:23:41,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:23:41,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:23:41,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:23:41,525 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) [2023-12-21 08:23:41,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 08:23:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:23:41,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 08:23:41,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:23:41,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 08:23:41,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 08:23:41,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:23:41,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557356816] [2023-12-21 08:23:41,637 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 08:23:41,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053133164] [2023-12-21 08:23:41,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053133164] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 08:23:41,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 08:23:41,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 08:23:41,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793502271] [2023-12-21 08:23:41,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 08:23:41,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 08:23:41,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:23:41,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 08:23:41,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 08:23:41,641 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 08:23:41,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:23:41,726 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2023-12-21 08:23:41,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 08:23:41,727 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-12-21 08:23:41,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:23:41,727 INFO L225 Difference]: With dead ends: 30 [2023-12-21 08:23:41,728 INFO L226 Difference]: Without dead ends: 26 [2023-12-21 08:23:41,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 08:23:41,729 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:23:41,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 68 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 08:23:41,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-12-21 08:23:41,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-12-21 08:23:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-21 08:23:41,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2023-12-21 08:23:41,740 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 17 [2023-12-21 08:23:41,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:23:41,740 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2023-12-21 08:23:41,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-21 08:23:41,740 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2023-12-21 08:23:41,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-21 08:23:41,741 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:23:41,741 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:23:41,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 08:23:41,945 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,SelfDestructingSolverStorable1 [2023-12-21 08:23:41,945 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:23:41,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:23:41,946 INFO L85 PathProgramCache]: Analyzing trace with hash -795669560, now seen corresponding path program 1 times [2023-12-21 08:23:41,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:23:41,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607222640] [2023-12-21 08:23:41,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:23:41,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:23:41,960 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 08:23:41,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1561510143] [2023-12-21 08:23:41,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:23:41,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:23:41,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:23:41,976 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) [2023-12-21 08:23:41,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 08:23:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:23:42,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 08:23:42,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:23:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 08:23:42,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 08:23:42,235 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 08:23:42,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:23:42,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607222640] [2023-12-21 08:23:42,236 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 08:23:42,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561510143] [2023-12-21 08:23:42,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561510143] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 08:23:42,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 08:23:42,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2023-12-21 08:23:42,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366057518] [2023-12-21 08:23:42,237 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 08:23:42,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 08:23:42,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:23:42,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 08:23:42,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-12-21 08:23:42,241 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 08:23:42,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:23:42,316 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2023-12-21 08:23:42,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:23:42,316 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2023-12-21 08:23:42,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:23:42,319 INFO L225 Difference]: With dead ends: 37 [2023-12-21 08:23:42,319 INFO L226 Difference]: Without dead ends: 33 [2023-12-21 08:23:42,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-12-21 08:23:42,322 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 18 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 08:23:42,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 91 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 08:23:42,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-12-21 08:23:42,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2023-12-21 08:23:42,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-21 08:23:42,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2023-12-21 08:23:42,335 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 24 [2023-12-21 08:23:42,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:23:42,340 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2023-12-21 08:23:42,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-21 08:23:42,340 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2023-12-21 08:23:42,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-21 08:23:42,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:23:42,341 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:23:42,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 08:23:42,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:23:42,552 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:23:42,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:23:42,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1266135666, now seen corresponding path program 1 times [2023-12-21 08:23:42,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:23:42,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068581845] [2023-12-21 08:23:42,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:23:42,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:23:42,561 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 08:23:42,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1052324613] [2023-12-21 08:23:42,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:23:42,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:23:42,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:23:42,562 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) [2023-12-21 08:23:42,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 08:23:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 08:23:42,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-21 08:23:42,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:23:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 08:23:42,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 08:24:39,026 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 08:24:47,063 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 08:25:03,099 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 08:25:07,117 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_4| Int)) (or (= (mod (+ (* 29 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 6 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 10 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 15 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|)) 30) 0) (= (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|))))) is different from true [2023-12-21 08:25:23,148 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 08:25:39,180 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 08:25:43,189 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_4| Int)) (or (= (mod (+ (* 29 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 6 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 10 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 15 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|)) 30) 0) (= (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|)))) (= c___VERIFIER_assert_~cond 0)) is different from true [2023-12-21 08:25:51,228 WARN L854 $PredicateComparison]: unable to prove that (or (= (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (< |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~k~0#1|) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0))) is different from false [2023-12-21 08:25:57,745 WARN L293 SmtUtils]: Spent 6.50s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 08:26:09,778 WARN L854 $PredicateComparison]: unable to prove that (or (= (+ |c_ULTIMATE.start_main_~y~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (+ |c_ULTIMATE.start_main_~c~0#1| (* |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0))) is different from false [2023-12-21 08:26:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 4 not checked. [2023-12-21 08:26:17,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:26:17,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068581845] [2023-12-21 08:26:17,868 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 08:26:17,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052324613] [2023-12-21 08:26:17,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052324613] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 08:26:17,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 08:26:17,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2023-12-21 08:26:17,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969158238] [2023-12-21 08:26:17,869 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 08:26:17,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 08:26:17,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:26:17,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 08:26:17,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=99, Unknown=13, NotChecked=92, Total=240 [2023-12-21 08:26:17,870 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 16 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 14 states have internal predecessors, (28), 8 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-21 08:26:30,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:26:30,031 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2023-12-21 08:26:30,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 08:26:30,032 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 14 states have internal predecessors, (28), 8 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 35 [2023-12-21 08:26:30,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:26:30,032 INFO L225 Difference]: With dead ends: 37 [2023-12-21 08:26:30,032 INFO L226 Difference]: Without dead ends: 31 [2023-12-21 08:26:30,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 72.4s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=16, NotChecked=116, Total=342 [2023-12-21 08:26:30,033 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:26:30,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 157 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 98 Unchecked, 0.1s Time] [2023-12-21 08:26:30,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-12-21 08:26:30,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-12-21 08:26:30,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-21 08:26:30,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2023-12-21 08:26:30,038 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 35 [2023-12-21 08:26:30,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:26:30,038 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2023-12-21 08:26:30,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 14 states have internal predecessors, (28), 8 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-21 08:26:30,039 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2023-12-21 08:26:30,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-21 08:26:30,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:26:30,039 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:26:30,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 08:26:30,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:26:30,245 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:26:30,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:26:30,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1244194529, now seen corresponding path program 2 times [2023-12-21 08:26:30,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:26:30,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6906708] [2023-12-21 08:26:30,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:26:30,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:26:30,253 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 08:26:30,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [383443633] [2023-12-21 08:26:30,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 08:26:30,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:26:30,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:26:30,258 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) [2023-12-21 08:26:30,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 08:26:30,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 08:26:30,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 08:26:30,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 08:26:30,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 08:26:30,444 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 08:26:30,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 08:26:40,790 WARN L854 $PredicateComparison]: unable to prove that (or (= (+ |c_ULTIMATE.start_main_~y~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (+ |c_ULTIMATE.start_main_~c~0#1| (* |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0))) is different from false [2023-12-21 08:26:48,822 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 4 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 08:27:00,980 WARN L293 SmtUtils]: Spent 8.14s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 08:27:06,478 WARN L293 SmtUtils]: Spent 5.50s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 08:27:10,483 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| Int)) (or (= (+ |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19|)) (+ |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_9| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_9|))) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| 6) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| 10) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| 29) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| 15)) 30) 0)))) is different from true [2023-12-21 08:27:22,515 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 08:27:38,550 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-12-21 08:27:46,572 WARN L876 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| Int)) (or (= (+ |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19|)) (+ |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_9| (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~c~0#1_BEFORE_CALL_9|))) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| 6) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| 10) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| 29) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_19| 15)) 30) 0))) (= c___VERIFIER_assert_~cond 0)) is different from true [2023-12-21 08:27:58,601 WARN L854 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 15) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 29) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 30) 0)) (= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2)) (+ (* |c_ULTIMATE.start_main_~c~0#1| 2) (* |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~y~0#1|)))) is different from false [2023-12-21 08:28:06,656 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 1 refuted. 6 times theorem prover too weak. 19 trivial. 9 not checked. [2023-12-21 08:28:06,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 08:28:06,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6906708] [2023-12-21 08:28:06,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 08:28:06,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383443633] [2023-12-21 08:28:06,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383443633] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 08:28:06,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 08:28:06,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2023-12-21 08:28:06,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509948281] [2023-12-21 08:28:06,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 08:28:06,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 08:28:06,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 08:28:06,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 08:28:06,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=151, Unknown=4, NotChecked=108, Total=306 [2023-12-21 08:28:06,658 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 18 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 9 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-12-21 08:28:06,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 08:28:06,936 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2023-12-21 08:28:06,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 08:28:06,937 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 9 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 42 [2023-12-21 08:28:06,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 08:28:06,937 INFO L225 Difference]: With dead ends: 50 [2023-12-21 08:28:06,937 INFO L226 Difference]: Without dead ends: 40 [2023-12-21 08:28:06,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=90, Invalid=342, Unknown=4, NotChecked=164, Total=600 [2023-12-21 08:28:06,938 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 08:28:06,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 145 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 105 Invalid, 0 Unknown, 165 Unchecked, 0.1s Time] [2023-12-21 08:28:06,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-12-21 08:28:06,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-12-21 08:28:06,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-21 08:28:06,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2023-12-21 08:28:06,947 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 42 [2023-12-21 08:28:06,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 08:28:06,947 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2023-12-21 08:28:06,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 9 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-12-21 08:28:06,947 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2023-12-21 08:28:06,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 08:28:06,948 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 08:28:06,948 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 08:28:06,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 08:28:07,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:28:07,154 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 08:28:07,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 08:28:07,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1662742834, now seen corresponding path program 3 times [2023-12-21 08:28:07,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 08:28:07,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770817353] [2023-12-21 08:28:07,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 08:28:07,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 08:28:07,164 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 08:28:07,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [866830835] [2023-12-21 08:28:07,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 08:28:07,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:28:07,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 08:28:07,175 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) [2023-12-21 08:28:07,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process Received shutdown request... [2023-12-21 08:38:29,878 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 [2023-12-21 08:38:29,907 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 08:38:30,925 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 0 [2023-12-21 08:38:31,108 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process [2023-12-21 08:38:31,153 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-21 08:38:31,154 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 08:38:31,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 08:38:31,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 137 [2023-12-21 08:38:31,156 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 64 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-21 08:38:31,159 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2023-12-21 08:38:31,161 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 08:38:31,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 08:38:31 BoogieIcfgContainer [2023-12-21 08:38:31,164 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 08:38:31,165 INFO L158 Benchmark]: Toolchain (without parser) took 890639.04ms. Allocated memory is still 321.9MB. Free memory was 271.9MB in the beginning and 253.7MB in the end (delta: 18.2MB). Peak memory consumption was 19.8MB. Max. memory is 8.0GB. [2023-12-21 08:38:31,165 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 243.3MB. Free memory is still 194.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 08:38:31,165 INFO L158 Benchmark]: CACSL2BoogieTranslator took 164.04ms. Allocated memory is still 321.9MB. Free memory was 271.6MB in the beginning and 260.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-21 08:38:31,165 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.30ms. Allocated memory is still 321.9MB. Free memory was 260.8MB in the beginning and 259.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 08:38:31,165 INFO L158 Benchmark]: Boogie Preprocessor took 27.28ms. Allocated memory is still 321.9MB. Free memory was 259.0MB in the beginning and 257.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-21 08:38:31,165 INFO L158 Benchmark]: RCFGBuilder took 214.90ms. Allocated memory is still 321.9MB. Free memory was 257.4MB in the beginning and 246.4MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 08:38:31,166 INFO L158 Benchmark]: TraceAbstraction took 890205.64ms. Allocated memory is still 321.9MB. Free memory was 245.8MB in the beginning and 253.7MB in the end (delta: -7.9MB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 08:38:31,167 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 243.3MB. Free memory is still 194.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 164.04ms. Allocated memory is still 321.9MB. Free memory was 271.6MB in the beginning and 260.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.30ms. Allocated memory is still 321.9MB. Free memory was 260.8MB in the beginning and 259.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.28ms. Allocated memory is still 321.9MB. Free memory was 259.0MB in the beginning and 257.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 214.90ms. Allocated memory is still 321.9MB. Free memory was 257.4MB in the beginning and 246.4MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 890205.64ms. Allocated memory is still 321.9MB. Free memory was 245.8MB in the beginning and 253.7MB in the end (delta: -7.9MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 12]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 12). Cancelled while NwaCegarLoop was analyzing trace of length 64 with TraceHistMax 8,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 890.2s, OverallIterations: 6, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 12.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 51 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46 mSDsluCounter, 483 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 263 IncrementalHoareTripleChecker+Unchecked, 395 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 315 IncrementalHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 88 mSDtfsCounter, 315 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 248 GetRequests, 184 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 90.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=5, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 251.9s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 228 ConstructedInterpolants, 6 QuantifiedInterpolants, 1333 SizeOfPredicates, 17 NumberOfNonLiveVariables, 391 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 120/164 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown