/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/array-multidimensional/copy-partial-3-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-18 19:49:31,333 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-18 19:49:31,379 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-18 19:49:31,382 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-18 19:49:31,382 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-18 19:49:31,399 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-18 19:49:31,399 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-18 19:49:31,399 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-18 19:49:31,400 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-18 19:49:31,400 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-18 19:49:31,400 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-18 19:49:31,400 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-18 19:49:31,401 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-18 19:49:31,401 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-18 19:49:31,401 INFO L153 SettingsManager]: * Use SBE=true [2023-12-18 19:49:31,401 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-18 19:49:31,402 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-18 19:49:31,402 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-18 19:49:31,402 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-18 19:49:31,402 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-18 19:49:31,403 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-18 19:49:31,407 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-18 19:49:31,407 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-18 19:49:31,407 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-18 19:49:31,407 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-18 19:49:31,408 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-18 19:49:31,408 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-18 19:49:31,408 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-18 19:49:31,408 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-18 19:49:31,408 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-18 19:49:31,409 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-18 19:49:31,409 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-18 19:49:31,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 19:49:31,409 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-18 19:49:31,409 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-18 19:49:31,410 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-18 19:49:31,410 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-18 19:49:31,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-18 19:49:31,410 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-18 19:49:31,410 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-18 19:49:31,411 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-18 19:49:31,415 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-18 19:49:31,415 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-18 19:49:31,415 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-18 19:49:31,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-18 19:49:31,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-18 19:49:31,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-18 19:49:31,623 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-18 19:49:31,623 INFO L274 PluginConnector]: CDTParser initialized [2023-12-18 19:49:31,624 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-multidimensional/copy-partial-3-u.c [2023-12-18 19:49:32,594 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-18 19:49:32,736 INFO L384 CDTParser]: Found 1 translation units. [2023-12-18 19:49:32,737 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/copy-partial-3-u.c [2023-12-18 19:49:32,744 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4af3f1d9a/b0a50c2f8bf943fbb7c65bdb8c2d69c9/FLAG2d9d47308 [2023-12-18 19:49:33,154 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4af3f1d9a/b0a50c2f8bf943fbb7c65bdb8c2d69c9 [2023-12-18 19:49:33,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-18 19:49:33,158 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-18 19:49:33,159 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-18 19:49:33,159 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-18 19:49:33,163 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-18 19:49:33,163 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:49:33" (1/1) ... [2023-12-18 19:49:33,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5218e419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:33, skipping insertion in model container [2023-12-18 19:49:33,164 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:49:33" (1/1) ... [2023-12-18 19:49:33,187 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-18 19:49:33,297 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/copy-partial-3-u.c[414,427] [2023-12-18 19:49:33,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 19:49:33,341 INFO L202 MainTranslator]: Completed pre-run [2023-12-18 19:49:33,352 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-multidimensional/copy-partial-3-u.c[414,427] [2023-12-18 19:49:33,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-18 19:49:33,387 INFO L206 MainTranslator]: Completed translation [2023-12-18 19:49:33,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:33 WrapperNode [2023-12-18 19:49:33,389 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-18 19:49:33,390 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-18 19:49:33,390 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-18 19:49:33,390 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-18 19:49:33,395 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:33" (1/1) ... [2023-12-18 19:49:33,406 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:33" (1/1) ... [2023-12-18 19:49:33,426 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 132 [2023-12-18 19:49:33,427 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-18 19:49:33,427 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-18 19:49:33,427 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-18 19:49:33,427 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-18 19:49:33,434 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:33" (1/1) ... [2023-12-18 19:49:33,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:33" (1/1) ... [2023-12-18 19:49:33,437 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:33" (1/1) ... [2023-12-18 19:49:33,462 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 3, 4]. 44 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 2, 1]. [2023-12-18 19:49:33,462 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:33" (1/1) ... [2023-12-18 19:49:33,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:33" (1/1) ... [2023-12-18 19:49:33,465 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:33" (1/1) ... [2023-12-18 19:49:33,473 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:33" (1/1) ... [2023-12-18 19:49:33,474 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:33" (1/1) ... [2023-12-18 19:49:33,475 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:33" (1/1) ... [2023-12-18 19:49:33,476 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-18 19:49:33,478 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-18 19:49:33,478 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-18 19:49:33,478 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-18 19:49:33,479 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:33" (1/1) ... [2023-12-18 19:49:33,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-18 19:49:33,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:49:33,498 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) [2023-12-18 19:49:33,527 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 [2023-12-18 19:49:33,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-18 19:49:33,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-18 19:49:33,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-18 19:49:33,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-12-18 19:49:33,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-18 19:49:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-18 19:49:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-18 19:49:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-12-18 19:49:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-18 19:49:33,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-18 19:49:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-18 19:49:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-18 19:49:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-12-18 19:49:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-18 19:49:33,606 INFO L241 CfgBuilder]: Building ICFG [2023-12-18 19:49:33,608 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-18 19:49:33,791 INFO L282 CfgBuilder]: Performing block encoding [2023-12-18 19:49:33,807 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-18 19:49:33,807 INFO L309 CfgBuilder]: Removed 12 assume(true) statements. [2023-12-18 19:49:33,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:49:33 BoogieIcfgContainer [2023-12-18 19:49:33,814 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-18 19:49:33,816 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-18 19:49:33,816 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-18 19:49:33,818 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-18 19:49:33,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 07:49:33" (1/3) ... [2023-12-18 19:49:33,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756fc72b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:49:33, skipping insertion in model container [2023-12-18 19:49:33,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:33" (2/3) ... [2023-12-18 19:49:33,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756fc72b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:49:33, skipping insertion in model container [2023-12-18 19:49:33,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:49:33" (3/3) ... [2023-12-18 19:49:33,820 INFO L112 eAbstractionObserver]: Analyzing ICFG copy-partial-3-u.c [2023-12-18 19:49:33,832 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-18 19:49:33,832 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-18 19:49:33,861 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-18 19:49:33,866 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;@16b30531, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-18 19:49:33,866 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-18 19:49:33,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.9) internal successors, (57), 31 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:49:33,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-18 19:49:33,875 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:49:33,876 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:49:33,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:49:33,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:49:33,883 INFO L85 PathProgramCache]: Analyzing trace with hash -35672779, now seen corresponding path program 1 times [2023-12-18 19:49:33,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:49:33,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087773661] [2023-12-18 19:49:33,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:33,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:49:33,964 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 19:49:33,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021266313] [2023-12-18 19:49:33,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:33,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:49:33,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:49:33,967 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) [2023-12-18 19:49:33,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-18 19:49:34,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:49:34,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-18 19:49:34,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:49:34,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:49:34,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 19:49:34,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:49:34,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087773661] [2023-12-18 19:49:34,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 19:49:34,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021266313] [2023-12-18 19:49:34,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021266313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 19:49:34,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 19:49:34,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-18 19:49:34,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417917987] [2023-12-18 19:49:34,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 19:49:34,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-18 19:49:34,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:49:34,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-18 19:49:34,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 19:49:34,090 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.9) internal successors, (57), 31 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-12-18 19:49:34,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:49:34,113 INFO L93 Difference]: Finished difference Result 62 states and 111 transitions. [2023-12-18 19:49:34,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-18 19:49:34,120 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-18 19:49:34,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:49:34,124 INFO L225 Difference]: With dead ends: 62 [2023-12-18 19:49:34,124 INFO L226 Difference]: Without dead ends: 30 [2023-12-18 19:49:34,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-18 19:49:34,132 INFO L413 NwaCegarLoop]: 41 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, 41 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 [2023-12-18 19:49:34,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 19:49:34,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-18 19:49:34,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-18 19:49:34,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 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) [2023-12-18 19:49:34,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2023-12-18 19:49:34,153 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 14 [2023-12-18 19:49:34,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:49:34,154 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2023-12-18 19:49:34,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-12-18 19:49:34,154 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2023-12-18 19:49:34,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-18 19:49:34,154 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:49:34,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:49:34,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-18 19:49:34,355 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 [2023-12-18 19:49:34,356 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:49:34,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:49:34,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1206240891, now seen corresponding path program 1 times [2023-12-18 19:49:34,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:49:34,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644392004] [2023-12-18 19:49:34,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:34,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:49:34,370 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 19:49:34,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563804352] [2023-12-18 19:49:34,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:34,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:49:34,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:49:34,378 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) [2023-12-18 19:49:34,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-18 19:49:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:49:34,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 19:49:34,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:49:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:49:34,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 19:49:34,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:49:34,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644392004] [2023-12-18 19:49:34,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 19:49:34,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563804352] [2023-12-18 19:49:34,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563804352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 19:49:34,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 19:49:34,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 19:49:34,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731463403] [2023-12-18 19:49:34,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 19:49:34,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 19:49:34,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:49:34,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 19:49:34,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 19:49:34,482 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-12-18 19:49:34,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:49:34,553 INFO L93 Difference]: Finished difference Result 72 states and 99 transitions. [2023-12-18 19:49:34,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 19:49:34,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-12-18 19:49:34,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:49:34,554 INFO L225 Difference]: With dead ends: 72 [2023-12-18 19:49:34,554 INFO L226 Difference]: Without dead ends: 50 [2023-12-18 19:49:34,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 19:49:34,556 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 63 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 19:49:34,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 29 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 19:49:34,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-18 19:49:34,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 31. [2023-12-18 19:49:34,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 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) [2023-12-18 19:49:34,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2023-12-18 19:49:34,561 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2023-12-18 19:49:34,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:49:34,561 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2023-12-18 19:49:34,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-12-18 19:49:34,561 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2023-12-18 19:49:34,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-18 19:49:34,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:49:34,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:49:34,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-18 19:49:34,766 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 [2023-12-18 19:49:34,767 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:49:34,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:49:34,767 INFO L85 PathProgramCache]: Analyzing trace with hash 2139015076, now seen corresponding path program 1 times [2023-12-18 19:49:34,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:49:34,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509032152] [2023-12-18 19:49:34,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:34,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:49:34,775 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 19:49:34,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [512709470] [2023-12-18 19:49:34,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:34,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:49:34,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:49:34,777 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) [2023-12-18 19:49:34,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-18 19:49:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:49:34,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 19:49:34,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:49:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:49:34,891 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 19:49:34,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:49:34,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509032152] [2023-12-18 19:49:34,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 19:49:34,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512709470] [2023-12-18 19:49:34,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512709470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 19:49:34,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 19:49:34,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 19:49:34,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145302613] [2023-12-18 19:49:34,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 19:49:34,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 19:49:34,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:49:34,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 19:49:34,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 19:49:34,893 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-12-18 19:49:34,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:49:34,979 INFO L93 Difference]: Finished difference Result 77 states and 107 transitions. [2023-12-18 19:49:34,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 19:49:34,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-12-18 19:49:34,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:49:34,981 INFO L225 Difference]: With dead ends: 77 [2023-12-18 19:49:34,982 INFO L226 Difference]: Without dead ends: 50 [2023-12-18 19:49:34,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 19:49:34,985 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 55 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 19:49:34,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 29 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 19:49:34,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-18 19:49:35,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 33. [2023-12-18 19:49:35,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.375) internal successors, (44), 32 states have internal predecessors, (44), 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) [2023-12-18 19:49:35,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2023-12-18 19:49:35,001 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 17 [2023-12-18 19:49:35,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:49:35,001 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2023-12-18 19:49:35,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 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) [2023-12-18 19:49:35,002 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2023-12-18 19:49:35,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-18 19:49:35,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:49:35,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:49:35,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-18 19:49:35,203 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 [2023-12-18 19:49:35,203 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:49:35,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:49:35,204 INFO L85 PathProgramCache]: Analyzing trace with hash 527282873, now seen corresponding path program 1 times [2023-12-18 19:49:35,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:49:35,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121636214] [2023-12-18 19:49:35,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:35,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:49:35,210 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 19:49:35,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991433727] [2023-12-18 19:49:35,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:35,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:49:35,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:49:35,211 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) [2023-12-18 19:49:35,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-18 19:49:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:49:35,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 19:49:35,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:49:35,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:49:35,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 19:49:35,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:49:35,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121636214] [2023-12-18 19:49:35,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 19:49:35,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991433727] [2023-12-18 19:49:35,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991433727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 19:49:35,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 19:49:35,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 19:49:35,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557100477] [2023-12-18 19:49:35,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 19:49:35,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 19:49:35,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:49:35,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 19:49:35,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 19:49:35,290 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-12-18 19:49:35,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:49:35,344 INFO L93 Difference]: Finished difference Result 79 states and 108 transitions. [2023-12-18 19:49:35,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 19:49:35,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-12-18 19:49:35,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:49:35,345 INFO L225 Difference]: With dead ends: 79 [2023-12-18 19:49:35,345 INFO L226 Difference]: Without dead ends: 50 [2023-12-18 19:49:35,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 19:49:35,349 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 73 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 19:49:35,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 35 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 19:49:35,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-12-18 19:49:35,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35. [2023-12-18 19:49:35,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 34 states have internal predecessors, (46), 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) [2023-12-18 19:49:35,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2023-12-18 19:49:35,359 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 20 [2023-12-18 19:49:35,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:49:35,359 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2023-12-18 19:49:35,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-12-18 19:49:35,359 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2023-12-18 19:49:35,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-18 19:49:35,360 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:49:35,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:49:35,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-18 19:49:35,564 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 [2023-12-18 19:49:35,564 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:49:35,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:49:35,565 INFO L85 PathProgramCache]: Analyzing trace with hash 2131150869, now seen corresponding path program 1 times [2023-12-18 19:49:35,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:49:35,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224321851] [2023-12-18 19:49:35,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:35,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:49:35,571 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 19:49:35,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463494332] [2023-12-18 19:49:35,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:35,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:49:35,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:49:35,572 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) [2023-12-18 19:49:35,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-18 19:49:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:49:35,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-18 19:49:35,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:49:35,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:49:35,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:49:35,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-18 19:49:35,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:49:35,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224321851] [2023-12-18 19:49:35,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 19:49:35,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463494332] [2023-12-18 19:49:35,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463494332] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:49:35,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 19:49:35,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-18 19:49:35,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099659640] [2023-12-18 19:49:35,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 19:49:35,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-18 19:49:35,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:49:35,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-18 19:49:35,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-18 19:49:35,699 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 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) [2023-12-18 19:49:35,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:49:35,816 INFO L93 Difference]: Finished difference Result 125 states and 173 transitions. [2023-12-18 19:49:35,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 19:49:35,816 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-18 19:49:35,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:49:35,820 INFO L225 Difference]: With dead ends: 125 [2023-12-18 19:49:35,820 INFO L226 Difference]: Without dead ends: 94 [2023-12-18 19:49:35,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-12-18 19:49:35,822 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 254 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 19:49:35,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 80 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 19:49:35,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-12-18 19:49:35,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 47. [2023-12-18 19:49:35,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.326086956521739) internal successors, (61), 46 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-18 19:49:35,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 61 transitions. [2023-12-18 19:49:35,842 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 61 transitions. Word has length 21 [2023-12-18 19:49:35,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:49:35,842 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 61 transitions. [2023-12-18 19:49:35,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 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) [2023-12-18 19:49:35,843 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 61 transitions. [2023-12-18 19:49:35,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-18 19:49:35,843 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:49:35,844 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:49:35,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-18 19:49:36,048 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 [2023-12-18 19:49:36,049 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:49:36,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:49:36,049 INFO L85 PathProgramCache]: Analyzing trace with hash -944363079, now seen corresponding path program 2 times [2023-12-18 19:49:36,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:49:36,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415276055] [2023-12-18 19:49:36,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:36,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:49:36,058 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 19:49:36,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [183278639] [2023-12-18 19:49:36,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 19:49:36,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:49:36,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:49:36,059 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) [2023-12-18 19:49:36,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-18 19:49:36,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-18 19:49:36,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:49:36,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-18 19:49:36,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:49:36,151 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-18 19:49:36,151 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 19:49:36,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:49:36,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415276055] [2023-12-18 19:49:36,151 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 19:49:36,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183278639] [2023-12-18 19:49:36,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183278639] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 19:49:36,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 19:49:36,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 19:49:36,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160101478] [2023-12-18 19:49:36,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 19:49:36,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 19:49:36,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:49:36,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 19:49:36,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 19:49:36,154 INFO L87 Difference]: Start difference. First operand 47 states and 61 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-12-18 19:49:36,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:49:36,198 INFO L93 Difference]: Finished difference Result 108 states and 140 transitions. [2023-12-18 19:49:36,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 19:49:36,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-12-18 19:49:36,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:49:36,199 INFO L225 Difference]: With dead ends: 108 [2023-12-18 19:49:36,199 INFO L226 Difference]: Without dead ends: 81 [2023-12-18 19:49:36,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-18 19:49:36,200 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 52 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 19:49:36,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 41 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 19:49:36,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-12-18 19:49:36,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 48. [2023-12-18 19:49:36,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 47 states have internal predecessors, (62), 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) [2023-12-18 19:49:36,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2023-12-18 19:49:36,210 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 24 [2023-12-18 19:49:36,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:49:36,210 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2023-12-18 19:49:36,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-12-18 19:49:36,211 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2023-12-18 19:49:36,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-18 19:49:36,211 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:49:36,211 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:49:36,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-18 19:49:36,416 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 [2023-12-18 19:49:36,416 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:49:36,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:49:36,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1178134721, now seen corresponding path program 1 times [2023-12-18 19:49:36,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:49:36,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45735581] [2023-12-18 19:49:36,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:36,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:49:36,424 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 19:49:36,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48138406] [2023-12-18 19:49:36,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:36,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:49:36,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:49:36,425 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) [2023-12-18 19:49:36,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-18 19:49:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:49:36,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-18 19:49:36,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:49:36,544 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-18 19:49:36,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:49:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-18 19:49:36,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:49:36,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45735581] [2023-12-18 19:49:36,604 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 19:49:36,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48138406] [2023-12-18 19:49:36,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48138406] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:49:36,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 19:49:36,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-12-18 19:49:36,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246137216] [2023-12-18 19:49:36,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 19:49:36,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-18 19:49:36,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:49:36,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-18 19:49:36,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2023-12-18 19:49:36,609 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 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) [2023-12-18 19:49:36,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:49:36,842 INFO L93 Difference]: Finished difference Result 235 states and 322 transitions. [2023-12-18 19:49:36,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-18 19:49:36,842 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-12-18 19:49:36,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:49:36,843 INFO L225 Difference]: With dead ends: 235 [2023-12-18 19:49:36,843 INFO L226 Difference]: Without dead ends: 191 [2023-12-18 19:49:36,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2023-12-18 19:49:36,844 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 357 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 19:49:36,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 141 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 19:49:36,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-12-18 19:49:36,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 72. [2023-12-18 19:49:36,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.295774647887324) internal successors, (92), 71 states have internal predecessors, (92), 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) [2023-12-18 19:49:36,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2023-12-18 19:49:36,855 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 27 [2023-12-18 19:49:36,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:49:36,855 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2023-12-18 19:49:36,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 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) [2023-12-18 19:49:36,855 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2023-12-18 19:49:36,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-18 19:49:36,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:49:36,856 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:49:36,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-18 19:49:37,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:49:37,061 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:49:37,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:49:37,062 INFO L85 PathProgramCache]: Analyzing trace with hash 37872831, now seen corresponding path program 2 times [2023-12-18 19:49:37,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:49:37,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225166503] [2023-12-18 19:49:37,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:37,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:49:37,078 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 19:49:37,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462248015] [2023-12-18 19:49:37,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 19:49:37,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:49:37,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:49:37,087 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) [2023-12-18 19:49:37,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-18 19:49:37,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-18 19:49:37,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:49:37,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-18 19:49:37,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:49:37,227 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-12-18 19:49:37,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-18 19:49:37,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:49:37,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225166503] [2023-12-18 19:49:37,227 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 19:49:37,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462248015] [2023-12-18 19:49:37,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462248015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-18 19:49:37,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-18 19:49:37,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-18 19:49:37,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538851055] [2023-12-18 19:49:37,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-18 19:49:37,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-18 19:49:37,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:49:37,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-18 19:49:37,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-18 19:49:37,228 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-12-18 19:49:37,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:49:37,296 INFO L93 Difference]: Finished difference Result 169 states and 216 transitions. [2023-12-18 19:49:37,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-18 19:49:37,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-12-18 19:49:37,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:49:37,297 INFO L225 Difference]: With dead ends: 169 [2023-12-18 19:49:37,297 INFO L226 Difference]: Without dead ends: 130 [2023-12-18 19:49:37,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-18 19:49:37,299 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 71 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-18 19:49:37,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 20 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-18 19:49:37,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-18 19:49:37,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 73. [2023-12-18 19:49:37,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.2916666666666667) internal successors, (93), 72 states have internal predecessors, (93), 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) [2023-12-18 19:49:37,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2023-12-18 19:49:37,312 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 33 [2023-12-18 19:49:37,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:49:37,313 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2023-12-18 19:49:37,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-12-18 19:49:37,313 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2023-12-18 19:49:37,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-18 19:49:37,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:49:37,315 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:49:37,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-18 19:49:37,520 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,SelfDestructingSolverStorable7 [2023-12-18 19:49:37,520 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:49:37,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:49:37,521 INFO L85 PathProgramCache]: Analyzing trace with hash 2111941714, now seen corresponding path program 1 times [2023-12-18 19:49:37,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:49:37,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823866369] [2023-12-18 19:49:37,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:37,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:49:37,532 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 19:49:37,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [177305716] [2023-12-18 19:49:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:37,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:49:37,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:49:37,534 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) [2023-12-18 19:49:37,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-18 19:49:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-18 19:49:37,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-18 19:49:37,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:49:37,720 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 19:49:37,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:49:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 19:49:37,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:49:37,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823866369] [2023-12-18 19:49:37,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 19:49:37,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177305716] [2023-12-18 19:49:37,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177305716] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:49:37,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 19:49:37,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2023-12-18 19:49:37,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558179759] [2023-12-18 19:49:37,853 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 19:49:37,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-18 19:49:37,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:49:37,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-18 19:49:37,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2023-12-18 19:49:37,854 INFO L87 Difference]: Start difference. First operand 73 states and 93 transitions. Second operand has 26 states, 26 states have (on average 2.0) internal successors, (52), 25 states have internal predecessors, (52), 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) [2023-12-18 19:49:38,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:49:38,481 INFO L93 Difference]: Finished difference Result 475 states and 640 transitions. [2023-12-18 19:49:38,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-18 19:49:38,482 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 25 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-12-18 19:49:38,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:49:38,483 INFO L225 Difference]: With dead ends: 475 [2023-12-18 19:49:38,483 INFO L226 Difference]: Without dead ends: 406 [2023-12-18 19:49:38,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=589, Invalid=743, Unknown=0, NotChecked=0, Total=1332 [2023-12-18 19:49:38,484 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 1879 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-18 19:49:38,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1879 Valid, 228 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-18 19:49:38,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-12-18 19:49:38,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 121. [2023-12-18 19:49:38,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.275) internal successors, (153), 120 states have internal predecessors, (153), 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) [2023-12-18 19:49:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 153 transitions. [2023-12-18 19:49:38,514 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 153 transitions. Word has length 36 [2023-12-18 19:49:38,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:49:38,514 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 153 transitions. [2023-12-18 19:49:38,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 25 states have internal predecessors, (52), 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) [2023-12-18 19:49:38,514 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 153 transitions. [2023-12-18 19:49:38,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-18 19:49:38,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:49:38,515 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:49:38,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-18 19:49:38,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:49:38,720 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:49:38,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:49:38,721 INFO L85 PathProgramCache]: Analyzing trace with hash 517378386, now seen corresponding path program 2 times [2023-12-18 19:49:38,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:49:38,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098110669] [2023-12-18 19:49:38,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:38,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:49:38,733 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 19:49:38,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274575727] [2023-12-18 19:49:38,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-18 19:49:38,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:49:38,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:49:38,734 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) [2023-12-18 19:49:38,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-18 19:49:38,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-18 19:49:38,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:49:38,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-18 19:49:38,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:49:39,154 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 19:49:39,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:49:39,620 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 2 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-18 19:49:39,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:49:39,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098110669] [2023-12-18 19:49:39,620 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 19:49:39,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274575727] [2023-12-18 19:49:39,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274575727] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:49:39,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 19:49:39,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2023-12-18 19:49:39,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462764003] [2023-12-18 19:49:39,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 19:49:39,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-18 19:49:39,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:49:39,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-18 19:49:39,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1179, Invalid=1271, Unknown=0, NotChecked=0, Total=2450 [2023-12-18 19:49:39,623 INFO L87 Difference]: Start difference. First operand 121 states and 153 transitions. Second operand has 50 states, 50 states have (on average 1.52) internal successors, (76), 49 states have internal predecessors, (76), 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) [2023-12-18 19:49:41,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:49:41,524 INFO L93 Difference]: Finished difference Result 931 states and 1252 transitions. [2023-12-18 19:49:41,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-18 19:49:41,524 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.52) internal successors, (76), 49 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2023-12-18 19:49:41,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:49:41,527 INFO L225 Difference]: With dead ends: 931 [2023-12-18 19:49:41,527 INFO L226 Difference]: Without dead ends: 814 [2023-12-18 19:49:41,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2329, Invalid=2927, Unknown=0, NotChecked=0, Total=5256 [2023-12-18 19:49:41,529 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 2912 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2912 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-18 19:49:41,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2912 Valid, 458 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [858 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-18 19:49:41,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2023-12-18 19:49:41,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 217. [2023-12-18 19:49:41,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.2638888888888888) internal successors, (273), 216 states have internal predecessors, (273), 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) [2023-12-18 19:49:41,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 273 transitions. [2023-12-18 19:49:41,548 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 273 transitions. Word has length 48 [2023-12-18 19:49:41,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:49:41,549 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 273 transitions. [2023-12-18 19:49:41,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.52) internal successors, (76), 49 states have internal predecessors, (76), 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) [2023-12-18 19:49:41,549 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 273 transitions. [2023-12-18 19:49:41,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-18 19:49:41,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:49:41,549 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:49:41,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-18 19:49:41,758 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,SelfDestructingSolverStorable9 [2023-12-18 19:49:41,759 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:49:41,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:49:41,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1618074450, now seen corresponding path program 3 times [2023-12-18 19:49:41,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:49:41,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551486266] [2023-12-18 19:49:41,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:41,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:49:41,791 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 19:49:41,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539089571] [2023-12-18 19:49:41,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-18 19:49:41,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:49:41,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:49:41,792 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) [2023-12-18 19:49:41,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-18 19:49:41,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-18 19:49:41,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:49:41,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-18 19:49:41,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:49:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1084 trivial. 0 not checked. [2023-12-18 19:49:42,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:49:42,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1084 trivial. 0 not checked. [2023-12-18 19:49:42,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:49:42,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551486266] [2023-12-18 19:49:42,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 19:49:42,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539089571] [2023-12-18 19:49:42,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539089571] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:49:42,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 19:49:42,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-12-18 19:49:42,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064784757] [2023-12-18 19:49:42,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 19:49:42,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-18 19:49:42,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:49:42,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-18 19:49:42,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-18 19:49:42,106 INFO L87 Difference]: Start difference. First operand 217 states and 273 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 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) [2023-12-18 19:49:42,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:49:42,256 INFO L93 Difference]: Finished difference Result 988 states and 1256 transitions. [2023-12-18 19:49:42,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-18 19:49:42,256 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-12-18 19:49:42,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:49:42,259 INFO L225 Difference]: With dead ends: 988 [2023-12-18 19:49:42,259 INFO L226 Difference]: Without dead ends: 827 [2023-12-18 19:49:42,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-12-18 19:49:42,260 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 342 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 19:49:42,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 34 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 19:49:42,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2023-12-18 19:49:42,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 388. [2023-12-18 19:49:42,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 1.178294573643411) internal successors, (456), 387 states have internal predecessors, (456), 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) [2023-12-18 19:49:42,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 456 transitions. [2023-12-18 19:49:42,316 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 456 transitions. Word has length 72 [2023-12-18 19:49:42,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:49:42,316 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 456 transitions. [2023-12-18 19:49:42,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 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) [2023-12-18 19:49:42,316 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 456 transitions. [2023-12-18 19:49:42,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-12-18 19:49:42,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:49:42,324 INFO L195 NwaCegarLoop]: trace histogram [184, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:49:42,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-18 19:49:42,524 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,SelfDestructingSolverStorable10 [2023-12-18 19:49:42,524 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:49:42,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:49:42,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1064115333, now seen corresponding path program 4 times [2023-12-18 19:49:42,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:49:42,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125340123] [2023-12-18 19:49:42,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:42,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:49:42,611 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 19:49:42,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27380586] [2023-12-18 19:49:42,611 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-18 19:49:42,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:49:42,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:49:42,618 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:49:42,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-18 19:49:42,828 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-18 19:49:42,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-18 19:49:42,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-18 19:49:42,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-18 19:49:43,039 INFO L134 CoverageAnalysis]: Checked inductivity of 17651 backedges. 8867 proven. 4432 refuted. 0 times theorem prover too weak. 4352 trivial. 0 not checked. [2023-12-18 19:49:43,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-18 19:49:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 17651 backedges. 6653 proven. 6646 refuted. 0 times theorem prover too weak. 4352 trivial. 0 not checked. [2023-12-18 19:49:43,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-18 19:49:43,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125340123] [2023-12-18 19:49:43,193 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-18 19:49:43,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27380586] [2023-12-18 19:49:43,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27380586] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-18 19:49:43,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-18 19:49:43,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-12-18 19:49:43,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852514268] [2023-12-18 19:49:43,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-18 19:49:43,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-18 19:49:43,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-18 19:49:43,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-18 19:49:43,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-18 19:49:43,194 INFO L87 Difference]: Start difference. First operand 388 states and 456 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 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) [2023-12-18 19:49:43,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-18 19:49:43,521 INFO L93 Difference]: Finished difference Result 1852 states and 2243 transitions. [2023-12-18 19:49:43,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-18 19:49:43,521 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2023-12-18 19:49:43,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-18 19:49:43,526 INFO L225 Difference]: With dead ends: 1852 [2023-12-18 19:49:43,526 INFO L226 Difference]: Without dead ends: 1518 [2023-12-18 19:49:43,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 462 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2023-12-18 19:49:43,527 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 228 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-18 19:49:43,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 57 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-18 19:49:43,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2023-12-18 19:49:43,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 725. [2023-12-18 19:49:43,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 724 states have (on average 1.1657458563535912) internal successors, (844), 724 states have internal predecessors, (844), 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) [2023-12-18 19:49:43,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 844 transitions. [2023-12-18 19:49:43,630 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 844 transitions. Word has length 237 [2023-12-18 19:49:43,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-18 19:49:43,630 INFO L495 AbstractCegarLoop]: Abstraction has 725 states and 844 transitions. [2023-12-18 19:49:43,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 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) [2023-12-18 19:49:43,630 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 844 transitions. [2023-12-18 19:49:43,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2023-12-18 19:49:43,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-18 19:49:43,634 INFO L195 NwaCegarLoop]: trace histogram [368, 8, 8, 8, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-18 19:49:43,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-18 19:49:43,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-18 19:49:43,839 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-18 19:49:43,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-18 19:49:43,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1776961853, now seen corresponding path program 5 times [2023-12-18 19:49:43,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-18 19:49:43,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709289561] [2023-12-18 19:49:43,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-18 19:49:43,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-18 19:49:43,956 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-18 19:49:43,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238103571] [2023-12-18 19:49:43,957 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-18 19:49:43,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-18 19:49:43,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-18 19:49:43,958 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-18 19:49:43,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process Received shutdown request... [2023-12-18 20:04:20,819 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-18 20:04:20,820 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 [2023-12-18 20:04:21,831 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 [2023-12-18 20:04:22,020 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forcibly destroying the process [2023-12-18 20:04:22,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 137 [2023-12-18 20:04:22,037 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-12-18 20:04:22,038 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-18 20:04:22,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-18 20:04:22,039 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 434 with TraceHistMax 368,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-12-18 20:04:22,042 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 2, 1, 1, 1, 1] [2023-12-18 20:04:22,044 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-18 20:04:22,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 08:04:22 BoogieIcfgContainer [2023-12-18 20:04:22,046 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-18 20:04:22,046 INFO L158 Benchmark]: Toolchain (without parser) took 888888.54ms. Allocated memory was 245.4MB in the beginning and 354.4MB in the end (delta: 109.1MB). Free memory was 210.0MB in the beginning and 158.1MB in the end (delta: 51.9MB). Peak memory consumption was 162.5MB. Max. memory is 8.0GB. [2023-12-18 20:04:22,047 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 188.7MB. Free memory is still 143.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-18 20:04:22,047 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.54ms. Allocated memory is still 245.4MB. Free memory was 209.5MB in the beginning and 197.9MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-18 20:04:22,047 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.95ms. Allocated memory is still 245.4MB. Free memory was 197.9MB in the beginning and 195.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 20:04:22,047 INFO L158 Benchmark]: Boogie Preprocessor took 49.10ms. Allocated memory is still 245.4MB. Free memory was 195.9MB in the beginning and 193.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-18 20:04:22,047 INFO L158 Benchmark]: RCFGBuilder took 336.38ms. Allocated memory is still 245.4MB. Free memory was 193.8MB in the beginning and 178.6MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-18 20:04:22,048 INFO L158 Benchmark]: TraceAbstraction took 888230.22ms. Allocated memory was 245.4MB in the beginning and 354.4MB in the end (delta: 109.1MB). Free memory was 178.1MB in the beginning and 158.1MB in the end (delta: 19.9MB). Peak memory consumption was 130.0MB. Max. memory is 8.0GB. [2023-12-18 20:04:22,049 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 188.7MB. Free memory is still 143.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 230.54ms. Allocated memory is still 245.4MB. Free memory was 209.5MB in the beginning and 197.9MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.95ms. Allocated memory is still 245.4MB. Free memory was 197.9MB in the beginning and 195.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 49.10ms. Allocated memory is still 245.4MB. Free memory was 195.9MB in the beginning and 193.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 336.38ms. Allocated memory is still 245.4MB. Free memory was 193.8MB in the beginning and 178.6MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 888230.22ms. Allocated memory was 245.4MB in the beginning and 354.4MB in the end (delta: 109.1MB). Free memory was 178.1MB in the beginning and 158.1MB in the end (delta: 19.9MB). Peak memory consumption was 130.0MB. 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: 10]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 10). Cancelled while NwaCegarLoop was analyzing trace of length 434 with TraceHistMax 368,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 888.2s, OverallIterations: 13, TraceHistogramMax: 368, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6286 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6286 mSDsluCounter, 1193 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 954 mSDsCounter, 1737 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1400 IncrementalHoareTripleChecker+Invalid, 3137 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1737 mSolverCounterUnsat, 239 mSDtfsCounter, 1400 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1041 GetRequests, 870 SyntacticMatches, 3 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1458 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=725occurred in iteration=12, InterpolantAutomatonStates: 137, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 2421 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 563 NumberOfCodeBlocks, 300 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 986 ConstructedInterpolants, 0 QuantifiedInterpolants, 3244 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1648 ConjunctsInSsa, 77 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 26491/38209 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