/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 06:28:53,020 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 06:28:53,084 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 06:28:53,088 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 06:28:53,088 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 06:28:53,108 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 06:28:53,108 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 06:28:53,108 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 06:28:53,109 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 06:28:53,111 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 06:28:53,111 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 06:28:53,111 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 06:28:53,111 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 06:28:53,112 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 06:28:53,112 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 06:28:53,112 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 06:28:53,112 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 06:28:53,112 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 06:28:53,112 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 06:28:53,113 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 06:28:53,113 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 06:28:53,114 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 06:28:53,114 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 06:28:53,114 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 06:28:53,114 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 06:28:53,114 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 06:28:53,114 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 06:28:53,114 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 06:28:53,115 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 06:28:53,115 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 06:28:53,115 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 06:28:53,116 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 06:28:53,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 06:28:53,116 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 06:28:53,116 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 06:28:53,116 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 06:28:53,116 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 06:28:53,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 06:28:53,116 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 06:28:53,116 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 06:28:53,117 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 06:28:53,117 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 06:28:53,117 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 06:28:53,117 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 06:28:53,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 06:28:53,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 06:28:53,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 06:28:53,290 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 06:28:53,291 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 06:28:53,291 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound2.c [2023-12-21 06:28:54,239 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 06:28:54,361 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 06:28:54,362 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound2.c [2023-12-21 06:28:54,366 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec4c0aa4e/2c61dd614c5a4d54ac4f8e2dc2203920/FLAGb959173e9 [2023-12-21 06:28:54,381 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec4c0aa4e/2c61dd614c5a4d54ac4f8e2dc2203920 [2023-12-21 06:28:54,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 06:28:54,384 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 06:28:54,385 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 06:28:54,385 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 06:28:54,388 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 06:28:54,389 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:28:54" (1/1) ... [2023-12-21 06:28:54,389 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fb3add2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:28:54, skipping insertion in model container [2023-12-21 06:28:54,390 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:28:54" (1/1) ... [2023-12-21 06:28:54,406 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 06:28:54,494 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2023-12-21 06:28:54,516 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 06:28:54,523 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 06:28:54,534 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2023-12-21 06:28:54,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 06:28:54,548 INFO L206 MainTranslator]: Completed translation [2023-12-21 06:28:54,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:28:54 WrapperNode [2023-12-21 06:28:54,549 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 06:28:54,550 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 06:28:54,550 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 06:28:54,550 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 06:28:54,554 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:28:54" (1/1) ... [2023-12-21 06:28:54,558 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:28:54" (1/1) ... [2023-12-21 06:28:54,579 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2023-12-21 06:28:54,579 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 06:28:54,580 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 06:28:54,580 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 06:28:54,580 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 06:28:54,586 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:28:54" (1/1) ... [2023-12-21 06:28:54,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:28:54" (1/1) ... [2023-12-21 06:28:54,587 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:28:54" (1/1) ... [2023-12-21 06:28:54,594 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 06:28:54,594 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:28:54" (1/1) ... [2023-12-21 06:28:54,594 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:28:54" (1/1) ... [2023-12-21 06:28:54,596 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:28:54" (1/1) ... [2023-12-21 06:28:54,602 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:28:54" (1/1) ... [2023-12-21 06:28:54,602 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:28:54" (1/1) ... [2023-12-21 06:28:54,603 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:28:54" (1/1) ... [2023-12-21 06:28:54,604 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 06:28:54,604 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 06:28:54,604 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 06:28:54,605 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 06:28:54,605 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:28:54" (1/1) ... [2023-12-21 06:28:54,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 06:28:54,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:28:54,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 06:28:54,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 06:28:54,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 06:28:54,660 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 06:28:54,660 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 06:28:54,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 06:28:54,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 06:28:54,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 06:28:54,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-21 06:28:54,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-21 06:28:54,700 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 06:28:54,701 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 06:28:54,798 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 06:28:54,813 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 06:28:54,814 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 06:28:54,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:28:54 BoogieIcfgContainer [2023-12-21 06:28:54,814 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 06:28:54,816 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 06:28:54,816 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 06:28:54,818 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 06:28:54,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 06:28:54" (1/3) ... [2023-12-21 06:28:54,818 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79de88f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:28:54, skipping insertion in model container [2023-12-21 06:28:54,818 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:28:54" (2/3) ... [2023-12-21 06:28:54,819 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79de88f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:28:54, skipping insertion in model container [2023-12-21 06:28:54,819 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:28:54" (3/3) ... [2023-12-21 06:28:54,819 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2023-12-21 06:28:54,830 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 06:28:54,830 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 06:28:54,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 06:28:54,862 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;@6feccf89, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 06:28:54,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 06:28:54,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-21 06:28:54,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-21 06:28:54,870 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:28:54,870 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:28:54,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:28:54,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:28:54,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1865535902, now seen corresponding path program 1 times [2023-12-21 06:28:54,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:28:54,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843811882] [2023-12-21 06:28:54,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:28:54,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:28:54,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:28:54,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:28:54,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843811882] [2023-12-21 06:28:54,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-12-21 06:28:54,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205634747] [2023-12-21 06:28:54,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:28:54,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:28:54,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:28:54,969 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:28:54,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 06:28:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:28:55,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-21 06:28:55,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:28:55,089 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-21 06:28:55,089 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 06:28:55,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205634747] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 06:28:55,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 06:28:55,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 06:28:55,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604179933] [2023-12-21 06:28:55,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 06:28:55,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 06:28:55,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:28:55,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 06:28:55,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 06:28:55,122 INFO L87 Difference]: Start difference. First operand has 32 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-21 06:28:55,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:28:55,152 INFO L93 Difference]: Finished difference Result 62 states and 107 transitions. [2023-12-21 06:28:55,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 06:28:55,154 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2023-12-21 06:28:55,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:28:55,159 INFO L225 Difference]: With dead ends: 62 [2023-12-21 06:28:55,159 INFO L226 Difference]: Without dead ends: 30 [2023-12-21 06:28:55,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 06:28:55,164 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 [2023-12-21 06:28:55,165 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] [2023-12-21 06:28:55,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-12-21 06:28:55,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-12-21 06:28:55,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-21 06:28:55,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2023-12-21 06:28:55,198 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 38 [2023-12-21 06:28:55,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:28:55,198 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2023-12-21 06:28:55,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-21 06:28:55,199 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2023-12-21 06:28:55,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-21 06:28:55,200 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:28:55,201 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:28:55,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 06:28:55,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-12-21 06:28:55,406 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:28:55,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:28:55,406 INFO L85 PathProgramCache]: Analyzing trace with hash -279596905, now seen corresponding path program 1 times [2023-12-21 06:28:55,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:28:55,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929976472] [2023-12-21 06:28:55,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:28:55,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:28:55,424 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:28:55,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768700540] [2023-12-21 06:28:55,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:28:55,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:28:55,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:28:55,431 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:28:55,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 06:28:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:28:55,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 06:28:55,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:28:55,547 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-21 06:28:55,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:28:55,628 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-21 06:28:55,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:28:55,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929976472] [2023-12-21 06:28:55,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:28:55,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768700540] [2023-12-21 06:28:55,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768700540] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:28:55,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:28:55,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2023-12-21 06:28:55,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361940626] [2023-12-21 06:28:55,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:28:55,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 06:28:55,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:28:55,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 06:28:55,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-21 06:28:55,632 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-21 06:28:55,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:28:55,743 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2023-12-21 06:28:55,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 06:28:55,743 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2023-12-21 06:28:55,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:28:55,746 INFO L225 Difference]: With dead ends: 47 [2023-12-21 06:28:55,746 INFO L226 Difference]: Without dead ends: 39 [2023-12-21 06:28:55,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-21 06:28:55,749 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 20 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 06:28:55,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 134 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 06:28:55,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-12-21 06:28:55,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2023-12-21 06:28:55,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-21 06:28:55,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2023-12-21 06:28:55,764 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 39 [2023-12-21 06:28:55,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:28:55,764 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2023-12-21 06:28:55,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-21 06:28:55,765 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2023-12-21 06:28:55,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-21 06:28:55,766 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:28:55,766 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:28:55,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 06:28:55,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-21 06:28:55,969 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:28:55,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:28:55,970 INFO L85 PathProgramCache]: Analyzing trace with hash -76887146, now seen corresponding path program 1 times [2023-12-21 06:28:55,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:28:55,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112651580] [2023-12-21 06:28:55,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:28:55,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:28:55,983 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:28:55,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [569881743] [2023-12-21 06:28:55,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:28:55,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:28:55,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:28:55,985 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:28:55,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 06:28:56,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:28:56,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 06:28:56,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:28:56,121 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-12-21 06:28:56,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:28:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-21 06:28:56,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:28:56,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112651580] [2023-12-21 06:28:56,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:28:56,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569881743] [2023-12-21 06:28:56,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569881743] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 06:28:56,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:28:56,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-21 06:28:56,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635360330] [2023-12-21 06:28:56,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 06:28:56,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 06:28:56,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:28:56,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 06:28:56,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-21 06:28:56,183 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 06:28:56,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:28:56,234 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2023-12-21 06:28:56,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 06:28:56,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 40 [2023-12-21 06:28:56,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:28:56,235 INFO L225 Difference]: With dead ends: 38 [2023-12-21 06:28:56,235 INFO L226 Difference]: Without dead ends: 36 [2023-12-21 06:28:56,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-21 06:28:56,236 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 06:28:56,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 122 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 06:28:56,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-12-21 06:28:56,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-12-21 06:28:56,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-21 06:28:56,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2023-12-21 06:28:56,244 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 40 [2023-12-21 06:28:56,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:28:56,244 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2023-12-21 06:28:56,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-21 06:28:56,244 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2023-12-21 06:28:56,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-21 06:28:56,245 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:28:56,245 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 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] [2023-12-21 06:28:56,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 06:28:56,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:28:56,459 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:28:56,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:28:56,459 INFO L85 PathProgramCache]: Analyzing trace with hash 345761675, now seen corresponding path program 1 times [2023-12-21 06:28:56,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:28:56,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918188906] [2023-12-21 06:28:56,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:28:56,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:28:56,469 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:28:56,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [782214270] [2023-12-21 06:28:56,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:28:56,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:28:56,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:28:56,473 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:28:56,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 06:28:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:28:56,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 06:28:56,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:28:56,710 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-21 06:28:56,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:28:56,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:28:56,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918188906] [2023-12-21 06:28:56,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:28:56,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782214270] [2023-12-21 06:28:56,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782214270] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 06:28:56,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:28:56,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-12-21 06:28:56,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003320143] [2023-12-21 06:28:56,784 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 06:28:56,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 06:28:56,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:28:56,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 06:28:56,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-21 06:28:56,786 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-21 06:28:56,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:28:56,965 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2023-12-21 06:28:56,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 06:28:56,966 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 45 [2023-12-21 06:28:56,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:28:56,967 INFO L225 Difference]: With dead ends: 49 [2023-12-21 06:28:56,968 INFO L226 Difference]: Without dead ends: 47 [2023-12-21 06:28:56,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-12-21 06:28:56,971 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 31 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 06:28:56,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 148 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 06:28:56,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-12-21 06:28:56,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-12-21 06:28:56,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-21 06:28:56,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2023-12-21 06:28:56,982 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 45 [2023-12-21 06:28:56,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:28:56,982 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2023-12-21 06:28:56,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-21 06:28:56,983 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2023-12-21 06:28:56,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 06:28:56,983 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:28:56,988 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 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] [2023-12-21 06:28:56,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 06:28:57,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:28:57,193 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:28:57,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:28:57,194 INFO L85 PathProgramCache]: Analyzing trace with hash -954985354, now seen corresponding path program 1 times [2023-12-21 06:28:57,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:28:57,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76389629] [2023-12-21 06:28:57,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:28:57,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:28:57,221 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:28:57,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [423232842] [2023-12-21 06:28:57,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:28:57,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:28:57,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:28:57,222 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:28:57,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 06:28:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:28:57,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 06:28:57,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:28:57,494 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-21 06:28:57,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:28:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-21 06:28:57,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:28:57,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76389629] [2023-12-21 06:28:57,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:28:57,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423232842] [2023-12-21 06:28:57,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423232842] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 06:28:57,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:28:57,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2023-12-21 06:28:57,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347855811] [2023-12-21 06:28:57,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 06:28:57,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 06:28:57,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:28:57,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 06:28:57,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-12-21 06:28:57,601 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-21 06:28:57,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:28:57,648 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2023-12-21 06:28:57,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 06:28:57,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 50 [2023-12-21 06:28:57,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:28:57,651 INFO L225 Difference]: With dead ends: 53 [2023-12-21 06:28:57,651 INFO L226 Difference]: Without dead ends: 51 [2023-12-21 06:28:57,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-12-21 06:28:57,652 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 06:28:57,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 157 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 06:28:57,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-12-21 06:28:57,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2023-12-21 06:28:57,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 29 states have internal predecessors, (32), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-21 06:28:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2023-12-21 06:28:57,666 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 50 [2023-12-21 06:28:57,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:28:57,666 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2023-12-21 06:28:57,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-21 06:28:57,666 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2023-12-21 06:28:57,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 06:28:57,670 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:28:57,670 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 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, 1] [2023-12-21 06:28:57,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 06:28:57,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:28:57,877 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:28:57,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:28:57,878 INFO L85 PathProgramCache]: Analyzing trace with hash -2047387093, now seen corresponding path program 1 times [2023-12-21 06:28:57,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:28:57,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012311319] [2023-12-21 06:28:57,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:28:57,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:28:57,886 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:28:57,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180368923] [2023-12-21 06:28:57,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:28:57,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:28:57,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:28:57,895 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:28:57,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 06:28:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:28:57,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 06:28:57,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:28:58,020 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-21 06:28:58,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:28:58,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:28:58,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012311319] [2023-12-21 06:28:58,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:28:58,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180368923] [2023-12-21 06:28:58,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180368923] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 06:28:58,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:28:58,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-12-21 06:28:58,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271485943] [2023-12-21 06:28:58,118 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 06:28:58,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 06:28:58,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:28:58,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 06:28:58,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-21 06:28:58,118 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-21 06:28:58,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:28:58,205 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2023-12-21 06:28:58,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 06:28:58,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 55 [2023-12-21 06:28:58,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:28:58,207 INFO L225 Difference]: With dead ends: 57 [2023-12-21 06:28:58,207 INFO L226 Difference]: Without dead ends: 55 [2023-12-21 06:28:58,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-21 06:28:58,207 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 11 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 06:28:58,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 146 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 06:28:58,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-21 06:28:58,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2023-12-21 06:28:58,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-21 06:28:58,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2023-12-21 06:28:58,222 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 55 [2023-12-21 06:28:58,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:28:58,223 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2023-12-21 06:28:58,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-21 06:28:58,224 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2023-12-21 06:28:58,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 06:28:58,224 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:28:58,224 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 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, 1, 1, 1, 1, 1] [2023-12-21 06:28:58,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 06:28:58,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:28:58,435 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:28:58,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:28:58,435 INFO L85 PathProgramCache]: Analyzing trace with hash 392643903, now seen corresponding path program 1 times [2023-12-21 06:28:58,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:28:58,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163133722] [2023-12-21 06:28:58,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:28:58,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:28:58,445 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:28:58,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [488633208] [2023-12-21 06:28:58,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:28:58,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:28:58,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:28:58,446 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) [2023-12-21 06:28:58,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 06:28:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:28:58,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 06:28:58,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:28:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-21 06:28:58,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:28:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-12-21 06:28:58,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:28:58,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163133722] [2023-12-21 06:28:58,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:28:58,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488633208] [2023-12-21 06:28:58,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488633208] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:28:58,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:28:58,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2023-12-21 06:28:58,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376289617] [2023-12-21 06:28:58,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:28:58,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 06:28:58,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:28:58,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 06:28:58,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-12-21 06:28:58,600 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-21 06:28:58,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:28:58,767 INFO L93 Difference]: Finished difference Result 101 states and 141 transitions. [2023-12-21 06:28:58,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 06:28:58,768 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 64 [2023-12-21 06:28:58,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:28:58,770 INFO L225 Difference]: With dead ends: 101 [2023-12-21 06:28:58,770 INFO L226 Difference]: Without dead ends: 93 [2023-12-21 06:28:58,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 115 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-12-21 06:28:58,771 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 36 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 06:28:58,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 281 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 06:28:58,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-12-21 06:28:58,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2023-12-21 06:28:58,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 45 states have (on average 1.2) internal successors, (54), 46 states have internal predecessors, (54), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-21 06:28:58,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 117 transitions. [2023-12-21 06:28:58,793 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 117 transitions. Word has length 64 [2023-12-21 06:28:58,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:28:58,793 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 117 transitions. [2023-12-21 06:28:58,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-12-21 06:28:58,793 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 117 transitions. [2023-12-21 06:28:58,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 06:28:58,795 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:28:58,795 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:28:58,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 06:28:59,000 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 [2023-12-21 06:28:59,000 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:28:59,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:28:59,001 INFO L85 PathProgramCache]: Analyzing trace with hash -45785549, now seen corresponding path program 1 times [2023-12-21 06:28:59,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:28:59,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732663077] [2023-12-21 06:28:59,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:28:59,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:28:59,009 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:28:59,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046032369] [2023-12-21 06:28:59,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:28:59,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:28:59,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:28:59,010 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) [2023-12-21 06:28:59,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 06:28:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:28:59,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 06:28:59,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:28:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 28 proven. 5 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-12-21 06:28:59,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:28:59,194 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-12-21 06:28:59,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:28:59,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732663077] [2023-12-21 06:28:59,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:28:59,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046032369] [2023-12-21 06:28:59,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046032369] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:28:59,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:28:59,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2023-12-21 06:28:59,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941686845] [2023-12-21 06:28:59,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:28:59,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 06:28:59,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:28:59,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 06:28:59,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-21 06:28:59,196 INFO L87 Difference]: Start difference. First operand 84 states and 117 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 06:28:59,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:28:59,291 INFO L93 Difference]: Finished difference Result 94 states and 129 transitions. [2023-12-21 06:28:59,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 06:28:59,291 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 70 [2023-12-21 06:28:59,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:28:59,293 INFO L225 Difference]: With dead ends: 94 [2023-12-21 06:28:59,293 INFO L226 Difference]: Without dead ends: 91 [2023-12-21 06:28:59,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-12-21 06:28:59,294 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 19 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 06:28:59,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 156 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 06:28:59,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-21 06:28:59,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-12-21 06:28:59,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 49 states have (on average 1.183673469387755) internal successors, (58), 51 states have internal predecessors, (58), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2023-12-21 06:28:59,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 125 transitions. [2023-12-21 06:28:59,313 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 125 transitions. Word has length 70 [2023-12-21 06:28:59,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:28:59,314 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 125 transitions. [2023-12-21 06:28:59,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-12-21 06:28:59,314 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 125 transitions. [2023-12-21 06:28:59,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-21 06:28:59,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:28:59,315 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:28:59,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-21 06:28:59,528 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 [2023-12-21 06:28:59,528 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:28:59,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:28:59,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1519552206, now seen corresponding path program 2 times [2023-12-21 06:28:59,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:28:59,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321008683] [2023-12-21 06:28:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:28:59,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:28:59,536 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:28:59,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1443626521] [2023-12-21 06:28:59,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 06:28:59,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:28:59,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:28:59,538 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) [2023-12-21 06:28:59,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 06:28:59,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 06:28:59,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:28:59,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 06:28:59,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:29:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 20 proven. 37 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-21 06:29:00,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:29:00,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:29:00,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321008683] [2023-12-21 06:29:00,375 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:29:00,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443626521] [2023-12-21 06:29:00,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443626521] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 06:29:00,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:29:00,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-12-21 06:29:00,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710254172] [2023-12-21 06:29:00,375 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 06:29:00,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 06:29:00,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:29:00,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 06:29:00,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2023-12-21 06:29:00,377 INFO L87 Difference]: Start difference. First operand 91 states and 125 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 13 states have internal predecessors, (26), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-21 06:29:00,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:29:00,670 INFO L93 Difference]: Finished difference Result 123 states and 164 transitions. [2023-12-21 06:29:00,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 06:29:00,670 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 13 states have internal predecessors, (26), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) Word has length 75 [2023-12-21 06:29:00,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:29:00,671 INFO L225 Difference]: With dead ends: 123 [2023-12-21 06:29:00,671 INFO L226 Difference]: Without dead ends: 121 [2023-12-21 06:29:00,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2023-12-21 06:29:00,672 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 34 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 06:29:00,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 219 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 06:29:00,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-21 06:29:00,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 118. [2023-12-21 06:29:00,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 67 states have internal predecessors, (76), 42 states have call successors, (42), 10 states have call predecessors, (42), 10 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-21 06:29:00,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 159 transitions. [2023-12-21 06:29:00,689 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 159 transitions. Word has length 75 [2023-12-21 06:29:00,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:29:00,690 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 159 transitions. [2023-12-21 06:29:00,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 13 states have internal predecessors, (26), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 6 states have call successors, (12) [2023-12-21 06:29:00,690 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 159 transitions. [2023-12-21 06:29:00,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 06:29:00,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:29:00,690 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:29:00,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-21 06:29:00,895 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 [2023-12-21 06:29:00,895 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:29:00,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:29:00,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1881497901, now seen corresponding path program 3 times [2023-12-21 06:29:00,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:29:00,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589165483] [2023-12-21 06:29:00,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:29:00,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:29:00,903 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:29:00,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1560226603] [2023-12-21 06:29:00,904 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 06:29:00,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:29:00,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:29:00,905 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) [2023-12-21 06:29:00,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 06:29:00,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-21 06:29:00,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:29:00,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 51 conjunts are in the unsatisfiable core [2023-12-21 06:29:00,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:29:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 48 proven. 27 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-12-21 06:29:01,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:29:13,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:29:13,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589165483] [2023-12-21 06:29:13,034 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:29:13,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560226603] [2023-12-21 06:29:13,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560226603] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 06:29:13,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:29:13,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-12-21 06:29:13,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460098210] [2023-12-21 06:29:13,035 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 06:29:13,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 06:29:13,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:29:13,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 06:29:13,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2023-12-21 06:29:13,036 INFO L87 Difference]: Start difference. First operand 118 states and 159 transitions. Second operand has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-21 06:29:13,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:29:13,427 INFO L93 Difference]: Finished difference Result 127 states and 167 transitions. [2023-12-21 06:29:13,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 06:29:13,427 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 80 [2023-12-21 06:29:13,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:29:13,428 INFO L225 Difference]: With dead ends: 127 [2023-12-21 06:29:13,428 INFO L226 Difference]: Without dead ends: 125 [2023-12-21 06:29:13,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=154, Invalid=716, Unknown=0, NotChecked=0, Total=870 [2023-12-21 06:29:13,429 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 46 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 06:29:13,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 169 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 06:29:13,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-12-21 06:29:13,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 122. [2023-12-21 06:29:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 68 states have (on average 1.161764705882353) internal successors, (79), 70 states have internal predecessors, (79), 42 states have call successors, (42), 11 states have call predecessors, (42), 11 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2023-12-21 06:29:13,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 162 transitions. [2023-12-21 06:29:13,444 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 162 transitions. Word has length 80 [2023-12-21 06:29:13,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:29:13,445 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 162 transitions. [2023-12-21 06:29:13,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2023-12-21 06:29:13,445 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 162 transitions. [2023-12-21 06:29:13,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 06:29:13,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:29:13,445 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:29:13,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 06:29:13,650 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 [2023-12-21 06:29:13,650 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:29:13,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:29:13,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1305329662, now seen corresponding path program 1 times [2023-12-21 06:29:13,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:29:13,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358424798] [2023-12-21 06:29:13,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:29:13,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:29:13,667 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:29:13,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185750998] [2023-12-21 06:29:13,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:29:13,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:29:13,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:29:13,669 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) [2023-12-21 06:29:13,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 06:29:13,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:29:13,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 41 conjunts are in the unsatisfiable core [2023-12-21 06:29:13,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:29:14,116 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-21 06:29:14,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:29:14,725 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-12-21 06:29:14,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:29:14,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358424798] [2023-12-21 06:29:14,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:29:14,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185750998] [2023-12-21 06:29:14,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185750998] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:29:14,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:29:14,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2023-12-21 06:29:14,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172352666] [2023-12-21 06:29:14,726 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:29:14,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 06:29:14,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:29:14,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 06:29:14,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2023-12-21 06:29:14,727 INFO L87 Difference]: Start difference. First operand 122 states and 162 transitions. Second operand has 21 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 10 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-21 06:29:20,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:29:20,802 INFO L93 Difference]: Finished difference Result 207 states and 294 transitions. [2023-12-21 06:29:20,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-21 06:29:20,802 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 10 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 86 [2023-12-21 06:29:20,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:29:20,804 INFO L225 Difference]: With dead ends: 207 [2023-12-21 06:29:20,804 INFO L226 Difference]: Without dead ends: 203 [2023-12-21 06:29:20,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=309, Invalid=1413, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 06:29:20,805 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 91 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-21 06:29:20,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 456 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-21 06:29:20,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-12-21 06:29:20,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 199. [2023-12-21 06:29:20,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 105 states have (on average 1.2) internal successors, (126), 106 states have internal predecessors, (126), 79 states have call successors, (79), 14 states have call predecessors, (79), 14 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-21 06:29:20,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 283 transitions. [2023-12-21 06:29:20,864 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 283 transitions. Word has length 86 [2023-12-21 06:29:20,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:29:20,864 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 283 transitions. [2023-12-21 06:29:20,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 10 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2023-12-21 06:29:20,864 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 283 transitions. [2023-12-21 06:29:20,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-12-21 06:29:20,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:29:20,865 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:29:20,876 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-21 06:29:21,070 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 [2023-12-21 06:29:21,071 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:29:21,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:29:21,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2056054646, now seen corresponding path program 4 times [2023-12-21 06:29:21,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:29:21,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460616229] [2023-12-21 06:29:21,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:29:21,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:29:21,105 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:29:21,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1980211734] [2023-12-21 06:29:21,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 06:29:21,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:29:21,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:29:21,118 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) [2023-12-21 06:29:21,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 06:29:21,166 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 06:29:21,166 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:29:21,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-21 06:29:21,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:29:21,187 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-12-21 06:29:21,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 06:29:21,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:29:21,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460616229] [2023-12-21 06:29:21,188 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:29:21,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980211734] [2023-12-21 06:29:21,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980211734] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 06:29:21,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 06:29:21,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 06:29:21,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054801024] [2023-12-21 06:29:21,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 06:29:21,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 06:29:21,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:29:21,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 06:29:21,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 06:29:21,189 INFO L87 Difference]: Start difference. First operand 199 states and 283 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-21 06:29:21,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:29:21,287 INFO L93 Difference]: Finished difference Result 252 states and 355 transitions. [2023-12-21 06:29:21,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 06:29:21,315 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 100 [2023-12-21 06:29:21,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:29:21,321 INFO L225 Difference]: With dead ends: 252 [2023-12-21 06:29:21,321 INFO L226 Difference]: Without dead ends: 180 [2023-12-21 06:29:21,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-21 06:29:21,322 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 7 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 06:29:21,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 158 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 06:29:21,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-21 06:29:21,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 166. [2023-12-21 06:29:21,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 88 states have (on average 1.1477272727272727) internal successors, (101), 89 states have internal predecessors, (101), 63 states have call successors, (63), 14 states have call predecessors, (63), 14 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2023-12-21 06:29:21,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 226 transitions. [2023-12-21 06:29:21,384 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 226 transitions. Word has length 100 [2023-12-21 06:29:21,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:29:21,385 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 226 transitions. [2023-12-21 06:29:21,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-12-21 06:29:21,386 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 226 transitions. [2023-12-21 06:29:21,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 06:29:21,387 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:29:21,387 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:29:21,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 06:29:21,596 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 [2023-12-21 06:29:21,596 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:29:21,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:29:21,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1556724626, now seen corresponding path program 1 times [2023-12-21 06:29:21,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:29:21,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979465297] [2023-12-21 06:29:21,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:29:21,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:29:21,605 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:29:21,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595997766] [2023-12-21 06:29:21,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:29:21,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:29:21,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:29:21,613 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) [2023-12-21 06:29:21,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 06:29:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 06:29:21,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 06:29:21,664 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:29:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 122 proven. 23 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2023-12-21 06:29:21,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:29:21,850 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-12-21 06:29:21,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:29:21,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979465297] [2023-12-21 06:29:21,851 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:29:21,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595997766] [2023-12-21 06:29:21,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595997766] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:29:21,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:29:21,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2023-12-21 06:29:21,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826241481] [2023-12-21 06:29:21,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:29:21,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 06:29:21,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:29:21,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 06:29:21,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-21 06:29:21,852 INFO L87 Difference]: Start difference. First operand 166 states and 226 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2023-12-21 06:29:22,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:29:22,159 INFO L93 Difference]: Finished difference Result 210 states and 282 transitions. [2023-12-21 06:29:22,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 06:29:22,159 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) Word has length 102 [2023-12-21 06:29:22,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:29:22,160 INFO L225 Difference]: With dead ends: 210 [2023-12-21 06:29:22,160 INFO L226 Difference]: Without dead ends: 139 [2023-12-21 06:29:22,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 189 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2023-12-21 06:29:22,161 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 46 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 06:29:22,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 272 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 06:29:22,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-12-21 06:29:22,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2023-12-21 06:29:22,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 73 states have (on average 1.1232876712328768) internal successors, (82), 74 states have internal predecessors, (82), 51 states have call successors, (51), 12 states have call predecessors, (51), 12 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-21 06:29:22,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 183 transitions. [2023-12-21 06:29:22,189 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 183 transitions. Word has length 102 [2023-12-21 06:29:22,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:29:22,190 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 183 transitions. [2023-12-21 06:29:22,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2023-12-21 06:29:22,190 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 183 transitions. [2023-12-21 06:29:22,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-21 06:29:22,191 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:29:22,191 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:29:22,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 06:29:22,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-21 06:29:22,396 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:29:22,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:29:22,396 INFO L85 PathProgramCache]: Analyzing trace with hash -2126175913, now seen corresponding path program 2 times [2023-12-21 06:29:22,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:29:22,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088992841] [2023-12-21 06:29:22,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:29:22,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:29:22,420 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:29:22,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504364177] [2023-12-21 06:29:22,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 06:29:22,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:29:22,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:29:22,421 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:29:22,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 06:29:22,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 06:29:22,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:29:22,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 06:29:22,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:29:22,574 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 154 proven. 18 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2023-12-21 06:29:22,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:29:22,692 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 48 proven. 32 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2023-12-21 06:29:22,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:29:22,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088992841] [2023-12-21 06:29:22,692 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:29:22,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504364177] [2023-12-21 06:29:22,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504364177] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:29:22,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:29:22,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-12-21 06:29:22,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251711253] [2023-12-21 06:29:22,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:29:22,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 06:29:22,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:29:22,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 06:29:22,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-12-21 06:29:22,694 INFO L87 Difference]: Start difference. First operand 137 states and 183 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 14 states have internal predecessors, (43), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) [2023-12-21 06:29:22,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:29:22,955 INFO L93 Difference]: Finished difference Result 180 states and 239 transitions. [2023-12-21 06:29:22,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 06:29:22,956 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 14 states have internal predecessors, (43), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) Word has length 122 [2023-12-21 06:29:22,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:29:22,957 INFO L225 Difference]: With dead ends: 180 [2023-12-21 06:29:22,957 INFO L226 Difference]: Without dead ends: 141 [2023-12-21 06:29:22,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 227 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2023-12-21 06:29:22,958 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 41 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 06:29:22,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 348 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 06:29:22,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-12-21 06:29:22,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 137. [2023-12-21 06:29:22,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 73 states have (on average 1.095890410958904) internal successors, (80), 74 states have internal predecessors, (80), 51 states have call successors, (51), 12 states have call predecessors, (51), 12 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2023-12-21 06:29:22,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 181 transitions. [2023-12-21 06:29:22,997 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 181 transitions. Word has length 122 [2023-12-21 06:29:22,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:29:22,997 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 181 transitions. [2023-12-21 06:29:22,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 14 states have internal predecessors, (43), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) [2023-12-21 06:29:22,998 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 181 transitions. [2023-12-21 06:29:22,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-21 06:29:22,999 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:29:22,999 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:29:23,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-21 06:29:23,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:29:23,206 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:29:23,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:29:23,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1600677333, now seen corresponding path program 2 times [2023-12-21 06:29:23,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:29:23,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715624432] [2023-12-21 06:29:23,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:29:23,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:29:23,213 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:29:23,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1753737445] [2023-12-21 06:29:23,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-21 06:29:23,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:29:23,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:29:23,214 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:29:23,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 06:29:23,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-21 06:29:23,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:29:23,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-21 06:29:23,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:29:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 38 proven. 52 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2023-12-21 06:29:24,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:29:25,558 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 32 proven. 43 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2023-12-21 06:29:25,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:29:25,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715624432] [2023-12-21 06:29:25,559 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:29:25,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753737445] [2023-12-21 06:29:25,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753737445] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:29:25,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:29:25,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2023-12-21 06:29:25,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894525163] [2023-12-21 06:29:25,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:29:25,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 06:29:25,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:29:25,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 06:29:25,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2023-12-21 06:29:25,561 INFO L87 Difference]: Start difference. First operand 137 states and 181 transitions. Second operand has 28 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 25 states have internal predecessors, (50), 14 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (42), 12 states have call predecessors, (42), 12 states have call successors, (42) [2023-12-21 06:29:47,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:29:47,932 INFO L93 Difference]: Finished difference Result 240 states and 340 transitions. [2023-12-21 06:29:47,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-21 06:29:47,932 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 25 states have internal predecessors, (50), 14 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (42), 12 states have call predecessors, (42), 12 states have call successors, (42) Word has length 133 [2023-12-21 06:29:47,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:29:47,935 INFO L225 Difference]: With dead ends: 240 [2023-12-21 06:29:47,935 INFO L226 Difference]: Without dead ends: 236 [2023-12-21 06:29:47,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=828, Invalid=4002, Unknown=0, NotChecked=0, Total=4830 [2023-12-21 06:29:47,936 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 202 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-12-21 06:29:47,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 793 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-12-21 06:29:47,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-12-21 06:29:48,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 221. [2023-12-21 06:29:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 110 states have (on average 1.1272727272727272) internal successors, (124), 111 states have internal predecessors, (124), 95 states have call successors, (95), 15 states have call predecessors, (95), 15 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2023-12-21 06:29:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 313 transitions. [2023-12-21 06:29:48,011 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 313 transitions. Word has length 133 [2023-12-21 06:29:48,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:29:48,011 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 313 transitions. [2023-12-21 06:29:48,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 25 states have internal predecessors, (50), 14 states have call successors, (43), 3 states have call predecessors, (43), 2 states have return successors, (42), 12 states have call predecessors, (42), 12 states have call successors, (42) [2023-12-21 06:29:48,012 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 313 transitions. [2023-12-21 06:29:48,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 06:29:48,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:29:48,013 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:29:48,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-21 06:29:48,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-21 06:29:48,218 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:29:48,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:29:48,218 INFO L85 PathProgramCache]: Analyzing trace with hash -181771727, now seen corresponding path program 3 times [2023-12-21 06:29:48,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:29:48,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749562012] [2023-12-21 06:29:48,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:29:48,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:29:48,227 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:29:48,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [231103965] [2023-12-21 06:29:48,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 06:29:48,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:29:48,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:29:48,228 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:29:48,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 06:29:48,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-21 06:29:48,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:29:48,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-21 06:29:48,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:29:48,942 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 86 proven. 61 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2023-12-21 06:29:48,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:29:53,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:29:53,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749562012] [2023-12-21 06:29:53,658 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:29:53,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231103965] [2023-12-21 06:29:53,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231103965] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 06:29:53,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:29:53,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-12-21 06:29:53,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217147780] [2023-12-21 06:29:53,658 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 06:29:53,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 06:29:53,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:29:53,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 06:29:53,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=425, Unknown=1, NotChecked=0, Total=506 [2023-12-21 06:29:53,659 INFO L87 Difference]: Start difference. First operand 221 states and 313 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 6 states have call successors, (16) [2023-12-21 06:29:54,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:29:54,249 INFO L93 Difference]: Finished difference Result 262 states and 365 transitions. [2023-12-21 06:29:54,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 06:29:54,250 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 6 states have call successors, (16) Word has length 141 [2023-12-21 06:29:54,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:29:54,251 INFO L225 Difference]: With dead ends: 262 [2023-12-21 06:29:54,251 INFO L226 Difference]: Without dead ends: 260 [2023-12-21 06:29:54,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=125, Invalid=630, Unknown=1, NotChecked=0, Total=756 [2023-12-21 06:29:54,252 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 30 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 06:29:54,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 219 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 06:29:54,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-21 06:29:54,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 257. [2023-12-21 06:29:54,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 131 states have (on average 1.1221374045801527) internal successors, (147), 132 states have internal predecessors, (147), 107 states have call successors, (107), 18 states have call predecessors, (107), 18 states have return successors, (106), 106 states have call predecessors, (106), 106 states have call successors, (106) [2023-12-21 06:29:54,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 360 transitions. [2023-12-21 06:29:54,342 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 360 transitions. Word has length 141 [2023-12-21 06:29:54,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:29:54,342 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 360 transitions. [2023-12-21 06:29:54,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 13 states have internal predecessors, (29), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 6 states have call successors, (16) [2023-12-21 06:29:54,343 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 360 transitions. [2023-12-21 06:29:54,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 06:29:54,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:29:54,343 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:29:54,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-21 06:29:54,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-21 06:29:54,551 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:29:54,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:29:54,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1508075856, now seen corresponding path program 4 times [2023-12-21 06:29:54,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:29:54,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197760869] [2023-12-21 06:29:54,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:29:54,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:29:54,565 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:29:54,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983898792] [2023-12-21 06:29:54,566 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-21 06:29:54,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:29:54,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:29:54,567 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:29:54,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 06:29:54,622 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-21 06:29:54,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:29:54,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 06:29:54,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:29:54,709 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 246 proven. 51 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2023-12-21 06:29:54,710 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:29:54,855 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 60 proven. 51 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2023-12-21 06:29:54,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:29:54,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197760869] [2023-12-21 06:29:54,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:29:54,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983898792] [2023-12-21 06:29:54,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983898792] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:29:54,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:29:54,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2023-12-21 06:29:54,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736592880] [2023-12-21 06:29:54,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:29:54,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 06:29:54,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:29:54,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 06:29:54,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-12-21 06:29:54,858 INFO L87 Difference]: Start difference. First operand 257 states and 360 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 12 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (44), 11 states have call predecessors, (44), 12 states have call successors, (44) [2023-12-21 06:29:55,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:29:55,219 INFO L93 Difference]: Finished difference Result 293 states and 407 transitions. [2023-12-21 06:29:55,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 06:29:55,220 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 12 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (44), 11 states have call predecessors, (44), 12 states have call successors, (44) Word has length 146 [2023-12-21 06:29:55,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:29:55,221 INFO L225 Difference]: With dead ends: 293 [2023-12-21 06:29:55,221 INFO L226 Difference]: Without dead ends: 193 [2023-12-21 06:29:55,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 275 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2023-12-21 06:29:55,222 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 40 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 06:29:55,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 453 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 06:29:55,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-12-21 06:29:55,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2023-12-21 06:29:55,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 99 states have (on average 1.1111111111111112) internal successors, (110), 100 states have internal predecessors, (110), 79 states have call successors, (79), 14 states have call predecessors, (79), 14 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2023-12-21 06:29:55,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 267 transitions. [2023-12-21 06:29:55,302 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 267 transitions. Word has length 146 [2023-12-21 06:29:55,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:29:55,302 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 267 transitions. [2023-12-21 06:29:55,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 12 states have call successors, (44), 2 states have call predecessors, (44), 3 states have return successors, (44), 11 states have call predecessors, (44), 12 states have call successors, (44) [2023-12-21 06:29:55,302 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 267 transitions. [2023-12-21 06:29:55,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 06:29:55,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:29:55,303 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:29:55,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-21 06:29:55,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-21 06:29:55,508 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:29:55,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:29:55,509 INFO L85 PathProgramCache]: Analyzing trace with hash 891540329, now seen corresponding path program 5 times [2023-12-21 06:29:55,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:29:55,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143125512] [2023-12-21 06:29:55,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:29:55,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:29:55,515 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:29:55,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1414140579] [2023-12-21 06:29:55,516 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-21 06:29:55,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:29:55,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:29:55,518 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:29:55,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 06:29:55,592 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-12-21 06:29:55,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:29:55,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 06:29:55,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:29:55,695 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 255 proven. 47 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2023-12-21 06:29:55,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:29:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 72 proven. 44 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2023-12-21 06:29:55,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:29:55,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143125512] [2023-12-21 06:29:55,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:29:55,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414140579] [2023-12-21 06:29:55,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414140579] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 06:29:55,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 06:29:55,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 20 [2023-12-21 06:29:55,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257309668] [2023-12-21 06:29:55,969 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 06:29:55,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 06:29:55,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:29:55,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 06:29:55,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2023-12-21 06:29:55,970 INFO L87 Difference]: Start difference. First operand 193 states and 267 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 18 states have internal predecessors, (50), 13 states have call successors, (49), 2 states have call predecessors, (49), 3 states have return successors, (49), 13 states have call predecessors, (49), 13 states have call successors, (49) [2023-12-21 06:29:56,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:29:56,344 INFO L93 Difference]: Finished difference Result 214 states and 286 transitions. [2023-12-21 06:29:56,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 06:29:56,345 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 18 states have internal predecessors, (50), 13 states have call successors, (49), 2 states have call predecessors, (49), 3 states have return successors, (49), 13 states have call predecessors, (49), 13 states have call successors, (49) Word has length 149 [2023-12-21 06:29:56,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:29:56,345 INFO L225 Difference]: With dead ends: 214 [2023-12-21 06:29:56,345 INFO L226 Difference]: Without dead ends: 114 [2023-12-21 06:29:56,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=739, Unknown=0, NotChecked=0, Total=992 [2023-12-21 06:29:56,347 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 56 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 06:29:56,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 511 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 06:29:56,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-12-21 06:29:56,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-12-21 06:29:56,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 63 states have internal predecessors, (64), 39 states have call successors, (39), 12 states have call predecessors, (39), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-12-21 06:29:56,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 141 transitions. [2023-12-21 06:29:56,389 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 141 transitions. Word has length 149 [2023-12-21 06:29:56,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:29:56,389 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 141 transitions. [2023-12-21 06:29:56,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 18 states have internal predecessors, (50), 13 states have call successors, (49), 2 states have call predecessors, (49), 3 states have return successors, (49), 13 states have call predecessors, (49), 13 states have call successors, (49) [2023-12-21 06:29:56,389 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 141 transitions. [2023-12-21 06:29:56,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-12-21 06:29:56,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 06:29:56,390 INFO L195 NwaCegarLoop]: trace histogram [33, 32, 32, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:29:56,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-21 06:29:56,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-21 06:29:56,595 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 06:29:56,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 06:29:56,595 INFO L85 PathProgramCache]: Analyzing trace with hash -2127526063, now seen corresponding path program 3 times [2023-12-21 06:29:56,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 06:29:56,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256614622] [2023-12-21 06:29:56,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 06:29:56,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 06:29:56,603 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-21 06:29:56,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [161497111] [2023-12-21 06:29:56,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-21 06:29:56,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:29:56,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 06:29:56,611 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 06:29:56,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-21 06:29:56,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-21 06:29:56,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-21 06:29:56,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-21 06:29:56,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 06:29:57,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2283 backedges. 156 proven. 98 refuted. 0 times theorem prover too weak. 2029 trivial. 0 not checked. [2023-12-21 06:29:57,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 06:30:02,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 06:30:02,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256614622] [2023-12-21 06:30:02,529 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-21 06:30:02,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161497111] [2023-12-21 06:30:02,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161497111] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 06:30:02,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-12-21 06:30:02,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-12-21 06:30:02,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523266734] [2023-12-21 06:30:02,530 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-12-21 06:30:02,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 06:30:02,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 06:30:02,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 06:30:02,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=510, Unknown=1, NotChecked=0, Total=600 [2023-12-21 06:30:02,531 INFO L87 Difference]: Start difference. First operand 114 states and 141 transitions. Second operand has 17 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 7 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-21 06:30:03,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 06:30:03,082 INFO L93 Difference]: Finished difference Result 114 states and 141 transitions. [2023-12-21 06:30:03,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 06:30:03,082 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 7 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) Word has length 221 [2023-12-21 06:30:03,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 06:30:03,083 INFO L225 Difference]: With dead ends: 114 [2023-12-21 06:30:03,083 INFO L226 Difference]: Without dead ends: 0 [2023-12-21 06:30:03,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=162, Invalid=893, Unknown=1, NotChecked=0, Total=1056 [2023-12-21 06:30:03,084 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 06:30:03,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 268 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 06:30:03,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-21 06:30:03,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-21 06:30:03,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 06:30:03,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-21 06:30:03,084 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 221 [2023-12-21 06:30:03,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 06:30:03,085 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-21 06:30:03,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 7 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2023-12-21 06:30:03,085 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-21 06:30:03,085 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-21 06:30:03,087 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 06:30:03,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-21 06:30:03,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 06:30:03,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-21 06:30:08,547 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse2 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse6 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse7 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse8 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse9 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse10 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~c~0#1| 0))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) .cse3 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse4 .cse5 (= |ULTIMATE.start_main_~k~0#1| 0) .cse6 .cse7 .cse8 .cse9 .cse10) (and (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse7 .cse8 .cse9 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~x~0#1|)) (and .cse11 .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) .cse9 .cse10) (and (= |ULTIMATE.start_main_~b~0#1| 1) (= 2 |ULTIMATE.start_main_~xy~0#1|) (= |ULTIMATE.start_main_~p~0#1| 0) (= 2 |ULTIMATE.start_main_~y~0#1|) (or .cse11 (< 0 |ULTIMATE.start_main_~c~0#1|)) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~s~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| 1) (= 2 (+ |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (= 2 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~yy~0#1| 4)))) [2023-12-21 06:30:08,547 INFO L895 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse2 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse6 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse7 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse8 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse9 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse10 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~c~0#1| 0))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) .cse3 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse4 .cse5 (= |ULTIMATE.start_main_~k~0#1| 0) .cse6 .cse7 .cse8 .cse9 .cse10) (and (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse7 .cse8 .cse9 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~x~0#1|)) (and .cse11 .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) .cse9 .cse10) (and (= |ULTIMATE.start_main_~b~0#1| 1) (= 2 |ULTIMATE.start_main_~xy~0#1|) (= |ULTIMATE.start_main_~p~0#1| 0) (= 2 |ULTIMATE.start_main_~y~0#1|) (or .cse11 (< 0 |ULTIMATE.start_main_~c~0#1|)) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~s~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| 1) (= 2 (+ |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (= 2 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~yy~0#1| 4)))) [2023-12-21 06:30:08,547 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2023-12-21 06:30:08,548 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2023-12-21 06:30:08,548 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse2 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse6 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse7 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse8 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse9 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse10 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~c~0#1| 0))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) .cse3 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse4 .cse5 (= |ULTIMATE.start_main_~k~0#1| 0) .cse6 .cse7 .cse8 .cse9 .cse10) (and (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse7 .cse8 .cse9 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~x~0#1|)) (and .cse11 .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) .cse9 .cse10) (and (= |ULTIMATE.start_main_~b~0#1| 1) (= 2 |ULTIMATE.start_main_~xy~0#1|) (= |ULTIMATE.start_main_~p~0#1| 0) (= 2 |ULTIMATE.start_main_~y~0#1|) (or .cse11 (< 0 |ULTIMATE.start_main_~c~0#1|)) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~s~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| 1) (= 2 (+ |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (= 2 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~yy~0#1| 4)))) [2023-12-21 06:30:08,548 INFO L895 garLoopResultBuilder]: At program point L41-1(lines 41 68) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~c~0#1| 0)) (.cse1 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse2 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and .cse0 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 2) (<= 1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse1 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse2 (= |ULTIMATE.start_main_~s~0#1| 1)) (and (= |ULTIMATE.start_main_~b~0#1| 1) (= 2 |ULTIMATE.start_main_~xy~0#1|) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~c~0#1| 1) (= 2 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~s~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| 1) (= 2 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~yy~0#1| 4)) (and .cse0 (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~b~0#1| 0) (<= 1 |ULTIMATE.start_main_~a~0#1|) .cse1 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) .cse2 (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) 0)))) [2023-12-21 06:30:08,548 INFO L895 garLoopResultBuilder]: At program point L41-2(lines 41 68) the Hoare annotation is: (let ((.cse0 (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)))) (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= .cse0 |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (= .cse0 0))) [2023-12-21 06:30:08,548 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-21 06:30:08,548 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2023-12-21 06:30:08,548 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse2 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse6 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse7 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse8 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse9 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse10 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~c~0#1| 0))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) .cse3 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse4 .cse5 (= |ULTIMATE.start_main_~k~0#1| 0) .cse6 .cse7 .cse8 .cse9 .cse10) (and (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse7 .cse8 .cse9 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~x~0#1|)) (and .cse11 .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) .cse9 .cse10) (and (= |ULTIMATE.start_main_~b~0#1| 1) (= 2 |ULTIMATE.start_main_~xy~0#1|) (= |ULTIMATE.start_main_~p~0#1| 0) (= 2 |ULTIMATE.start_main_~y~0#1|) (or .cse11 (< 0 |ULTIMATE.start_main_~c~0#1|)) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~s~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| 1) (= 2 (+ |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (= 2 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~yy~0#1| 4)))) [2023-12-21 06:30:08,548 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2023-12-21 06:30:08,548 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-21 06:30:08,548 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~y~0#1|) (or (= |ULTIMATE.start_main_~b~0#1| 0) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2023-12-21 06:30:08,548 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 2) (<= 1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (= |ULTIMATE.start_main_~s~0#1| 1)) [2023-12-21 06:30:08,548 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 2) (<= 1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (= |ULTIMATE.start_main_~s~0#1| 1)) [2023-12-21 06:30:08,549 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2023-12-21 06:30:08,549 INFO L902 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2023-12-21 06:30:08,549 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2023-12-21 06:30:08,549 INFO L899 garLoopResultBuilder]: For program point L51(lines 47 56) no Hoare annotation was computed. [2023-12-21 06:30:08,549 INFO L895 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse1 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse2 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse3 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse5 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse6 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse7 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse8 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse9 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse10 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~c~0#1| 0))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~c~0#1|) .cse3 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse4 .cse5 (= |ULTIMATE.start_main_~k~0#1| 0) .cse6 .cse7 .cse8 .cse9 .cse10) (and (= |ULTIMATE.start_main_~k~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse7 .cse8 .cse9 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) .cse10 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~x~0#1|)) (and .cse11 .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) .cse9 .cse10) (and (= |ULTIMATE.start_main_~b~0#1| 1) (= 2 |ULTIMATE.start_main_~xy~0#1|) (= |ULTIMATE.start_main_~p~0#1| 0) (= 2 |ULTIMATE.start_main_~y~0#1|) (or .cse11 (< 0 |ULTIMATE.start_main_~c~0#1|)) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~s~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| 1) (= 2 (+ |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (= 2 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~yy~0#1| 4)))) [2023-12-21 06:30:08,549 INFO L899 garLoopResultBuilder]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2023-12-21 06:30:08,549 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2023-12-21 06:30:08,549 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2023-12-21 06:30:08,549 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2023-12-21 06:30:08,549 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2023-12-21 06:30:08,549 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2023-12-21 06:30:08,549 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2023-12-21 06:30:08,549 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2023-12-21 06:30:08,549 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2023-12-21 06:30:08,549 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 16) the Hoare annotation is: true [2023-12-21 06:30:08,549 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2023-12-21 06:30:08,549 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2023-12-21 06:30:08,551 INFO L445 BasicCegarLoop]: Path program histogram: [5, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 06:30:08,553 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 06:30:08,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 06:30:08 BoogieIcfgContainer [2023-12-21 06:30:08,563 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 06:30:08,580 INFO L158 Benchmark]: Toolchain (without parser) took 74180.18ms. Allocated memory was 327.2MB in the beginning and 417.3MB in the end (delta: 90.2MB). Free memory was 264.9MB in the beginning and 224.7MB in the end (delta: 40.2MB). Peak memory consumption was 224.8MB. Max. memory is 8.0GB. [2023-12-21 06:30:08,580 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 197.1MB. Free memory is still 147.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 06:30:08,580 INFO L158 Benchmark]: CACSL2BoogieTranslator took 163.77ms. Allocated memory is still 327.2MB. Free memory was 264.9MB in the beginning and 253.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-21 06:30:08,580 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.98ms. Allocated memory is still 327.2MB. Free memory was 253.4MB in the beginning and 251.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 06:30:08,580 INFO L158 Benchmark]: Boogie Preprocessor took 24.04ms. Allocated memory is still 327.2MB. Free memory was 251.8MB in the beginning and 249.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 06:30:08,581 INFO L158 Benchmark]: RCFGBuilder took 209.76ms. Allocated memory is still 327.2MB. Free memory was 249.7MB in the beginning and 236.1MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-21 06:30:08,581 INFO L158 Benchmark]: TraceAbstraction took 73747.90ms. Allocated memory was 327.2MB in the beginning and 417.3MB in the end (delta: 90.2MB). Free memory was 235.5MB in the beginning and 224.7MB in the end (delta: 10.8MB). Peak memory consumption was 195.5MB. Max. memory is 8.0GB. [2023-12-21 06:30:08,582 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 197.1MB. Free memory is still 147.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 163.77ms. Allocated memory is still 327.2MB. Free memory was 264.9MB in the beginning and 253.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.98ms. Allocated memory is still 327.2MB. Free memory was 253.4MB in the beginning and 251.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.04ms. Allocated memory is still 327.2MB. Free memory was 251.8MB in the beginning and 249.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 209.76ms. Allocated memory is still 327.2MB. Free memory was 249.7MB in the beginning and 236.1MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 73747.90ms. Allocated memory was 327.2MB in the beginning and 417.3MB in the end (delta: 90.2MB). Free memory was 235.5MB in the beginning and 224.7MB in the end (delta: 10.8MB). Peak memory consumption was 195.5MB. 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 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 73.7s, OverallIterations: 19, TraceHistogramMax: 33, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 32.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 825 SdHoareTripleChecker+Valid, 10.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 743 mSDsluCounter, 5051 SdHoareTripleChecker+Invalid, 10.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4347 mSDsCounter, 713 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4160 IncrementalHoareTripleChecker+Invalid, 4873 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 713 mSolverCounterUnsat, 704 mSDtfsCounter, 4160 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3030 GetRequests, 2617 SyntacticMatches, 11 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2519 ImplicationChecksByTransitivity, 34.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=257occurred in iteration=16, InterpolantAutomatonStates: 262, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 19 MinimizatonAttempts, 67 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 222 PreInvPairs, 301 NumberOfFragments, 1240 HoareAnnotationTreeSize, 222 FormulaSimplifications, 13116 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 16 FormulaSimplificationsInter, 3565 FormulaSimplificationTreeSizeReductionInter, 4.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 29.7s InterpolantComputationTime, 1794 NumberOfCodeBlocks, 1553 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 2727 ConstructedInterpolants, 0 QuantifiedInterpolants, 12097 SizeOfPredicates, 118 NumberOfNonLiveVariables, 3714 ConjunctsInSsa, 502 ConjunctsInUnsatCore, 30 InterpolantComputations, 4 PerfectInterpolantSequences, 10499/11233 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (((((((((((((((((yy == (y * y)) && (p == 1)) && (1 <= y)) && (a == c)) && (b == y)) && (b <= 2)) && (r == 0)) && (q == 0)) && (k == 0)) && (1 <= x)) && (xy == (x * y))) && (a == x)) && (x <= 2)) && (s == 1)) || (((((((((((((k == 1) && (yy == (y * y))) && (p == 1)) && (1 <= y)) && (b == y)) && (r == 0)) && (q == 0)) && (xy == (x * y))) && (a == x)) && (x <= 2)) && (b <= x)) && (s == 1)) && ((b + c) == x))) || (((((((((((((c == 0) && (yy == (y * y))) && (p == 1)) && (1 <= y)) && (b == y)) && (r == 0)) && (q == 0)) && (1 <= x)) && (xy == (x * y))) && (a == x)) && (x == (c + (b * k)))) && (x <= 2)) && (s == 1))) || ((((((((((((b == 1) && (2 == xy)) && (p == 0)) && (2 == y)) && ((c == 0) || (0 < c))) && (x == 1)) && (q == 1)) && (s == 0)) && (r == 1)) && (2 == (c + k))) && (2 == a)) && (yy == 4))) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: (((((((((((((((c == 0) && (yy == (y * y))) && (p == 1)) && (b == y)) && (b <= 2)) && (1 <= b)) && (r == 0)) && (q == 0)) && (1 <= x)) && (xy == (x * y))) && (a == x)) && (x <= 2)) && (s == 1)) || (((((((((((b == 1) && (2 == xy)) && (p == 0)) && (c == 1)) && (2 == y)) && (x == 1)) && (q == 1)) && (s == 0)) && (r == 1)) && (2 == a)) && (yy == 4))) || (((((((((c == 0) && (y <= 2)) && (1 <= y)) && (b == 0)) && (1 <= a)) && (1 <= x)) && (((r * y) + (p * x)) == a)) && (x <= 2)) && (((s * y) + (q * x)) == 0))) RESULT: Ultimate proved your program to be correct! [2023-12-21 06:30:08,610 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 Received shutdown request...