/usr/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 -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem18_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 23:36:13,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 23:36:13,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 23:36:13,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-01 23:36:13,797 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-04-01 23:36:13,833 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 23:36:13,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 23:36:13,833 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 23:36:13,834 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 23:36:13,835 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 23:36:13,835 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 23:36:13,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-01 23:36:13,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-01 23:36:13,835 INFO L138 SettingsManager]: * Use SBE=true [2023-04-01 23:36:13,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 23:36:13,836 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 23:36:13,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 23:36:13,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 23:36:13,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 23:36:13,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 23:36:13,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 23:36:13,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 23:36:13,837 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 23:36:13,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 23:36:13,837 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 23:36:13,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 23:36:13,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 23:36:13,838 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-01 23:36:13,838 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 23:36:13,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:36:13,838 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 23:36:13,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 23:36:13,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 23:36:13,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-01 23:36:13,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 23:36:13,839 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-01 23:36:13,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 23:36:13,839 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-01 23:36:13,839 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-01 23:36:13,839 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-01 23:36:13,839 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-01 23:36:14,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 23:36:14,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 23:36:14,082 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 23:36:14,083 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 23:36:14,084 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 23:36:14,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem18_label00.c [2023-04-01 23:36:15,252 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 23:36:15,597 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 23:36:15,597 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label00.c [2023-04-01 23:36:15,619 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92e246e23/b803f9ce40414f0387d04ad6ace357a1/FLAG34f9b0174 [2023-04-01 23:36:15,636 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92e246e23/b803f9ce40414f0387d04ad6ace357a1 [2023-04-01 23:36:15,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 23:36:15,641 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 23:36:15,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 23:36:15,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 23:36:15,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 23:36:15,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:36:15" (1/1) ... [2023-04-01 23:36:15,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74226fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:15, skipping insertion in model container [2023-04-01 23:36:15,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:36:15" (1/1) ... [2023-04-01 23:36:15,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 23:36:15,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 23:36:15,977 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label00.c[2299,2312] [2023-04-01 23:36:16,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:36:16,602 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 23:36:16,620 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem18_label00.c[2299,2312] [2023-04-01 23:36:16,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 23:36:16,911 INFO L208 MainTranslator]: Completed translation [2023-04-01 23:36:16,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:16 WrapperNode [2023-04-01 23:36:16,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 23:36:16,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 23:36:16,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 23:36:16,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 23:36:16,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:16" (1/1) ... [2023-04-01 23:36:16,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:16" (1/1) ... [2023-04-01 23:36:16,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:16" (1/1) ... [2023-04-01 23:36:16,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:16" (1/1) ... [2023-04-01 23:36:17,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:16" (1/1) ... [2023-04-01 23:36:17,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:16" (1/1) ... [2023-04-01 23:36:17,054 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:16" (1/1) ... [2023-04-01 23:36:17,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:16" (1/1) ... [2023-04-01 23:36:17,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 23:36:17,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 23:36:17,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 23:36:17,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 23:36:17,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:16" (1/1) ... [2023-04-01 23:36:17,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 23:36:17,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:36:17,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 23:36:17,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 23:36:17,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 23:36:17,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 23:36:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 23:36:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-04-01 23:36:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-04-01 23:36:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2023-04-01 23:36:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 23:36:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-04-01 23:36:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-04-01 23:36:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2023-04-01 23:36:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 23:36:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 23:36:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 23:36:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 23:36:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 23:36:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-01 23:36:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 23:36:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 23:36:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 23:36:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 23:36:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 23:36:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 23:36:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 23:36:17,249 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 23:36:17,251 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 23:36:19,822 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 23:36:19,840 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 23:36:19,840 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 23:36:19,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:36:19 BoogieIcfgContainer [2023-04-01 23:36:19,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 23:36:19,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 23:36:19,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 23:36:19,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 23:36:19,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:36:15" (1/3) ... [2023-04-01 23:36:19,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6b2b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:36:19, skipping insertion in model container [2023-04-01 23:36:19,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:36:16" (2/3) ... [2023-04-01 23:36:19,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6b2b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:36:19, skipping insertion in model container [2023-04-01 23:36:19,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:36:19" (3/3) ... [2023-04-01 23:36:19,852 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label00.c [2023-04-01 23:36:19,867 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 23:36:19,867 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 23:36:19,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 23:36:19,943 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=LoopsAndPotentialCycles, 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;@12b6dfb4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-01 23:36:19,943 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 23:36:19,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-04-01 23:36:19,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-04-01 23:36:19,958 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:36:19,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:36:19,959 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:36:19,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:36:19,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1420904790, now seen corresponding path program 1 times [2023-04-01 23:36:19,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:36:19,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087895256] [2023-04-01 23:36:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:19,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:36:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:20,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:36:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:36:20,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:36:20,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087895256] [2023-04-01 23:36:20,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087895256] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:36:20,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:36:20,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-01 23:36:20,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501939533] [2023-04-01 23:36:20,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:36:20,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 23:36:20,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:36:20,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 23:36:20,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-01 23:36:20,444 INFO L87 Difference]: Start difference. First operand has 774 states, 762 states have (on average 1.9041994750656168) internal successors, (1451), 763 states have internal predecessors, (1451), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:36:24,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:36:24,785 INFO L93 Difference]: Finished difference Result 2270 states and 4349 transitions. [2023-04-01 23:36:24,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-01 23:36:24,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2023-04-01 23:36:24,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:36:24,808 INFO L225 Difference]: With dead ends: 2270 [2023-04-01 23:36:24,809 INFO L226 Difference]: Without dead ends: 1432 [2023-04-01 23:36:24,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-01 23:36:24,819 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2168 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 3363 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2168 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 3955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 3363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:36:24,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2168 Valid, 37 Invalid, 3955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 3363 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-04-01 23:36:24,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2023-04-01 23:36:24,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1425. [2023-04-01 23:36:24,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1404 states have (on average 1.5690883190883191) internal successors, (2203), 1406 states have internal predecessors, (2203), 8 states have call successors, (8), 8 states have call predecessors, (8), 12 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) [2023-04-01 23:36:24,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2229 transitions. [2023-04-01 23:36:24,927 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2229 transitions. Word has length 25 [2023-04-01 23:36:24,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:36:24,928 INFO L495 AbstractCegarLoop]: Abstraction has 1425 states and 2229 transitions. [2023-04-01 23:36:24,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 23:36:24,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2229 transitions. [2023-04-01 23:36:24,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-04-01 23:36:24,933 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:36:24,934 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:36:24,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 23:36:24,935 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:36:24,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:36:24,935 INFO L85 PathProgramCache]: Analyzing trace with hash 892301230, now seen corresponding path program 1 times [2023-04-01 23:36:24,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:36:24,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946826399] [2023-04-01 23:36:24,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:24,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:36:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:25,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:36:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:25,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:36:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:36:25,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:36:25,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946826399] [2023-04-01 23:36:25,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946826399] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:36:25,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 23:36:25,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-01 23:36:25,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728332760] [2023-04-01 23:36:25,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:36:25,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-01 23:36:25,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:36:25,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-01 23:36:25,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-04-01 23:36:25,319 INFO L87 Difference]: Start difference. First operand 1425 states and 2229 transitions. Second operand has 7 states, 6 states have (on average 14.833333333333334) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:36:30,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:36:30,084 INFO L93 Difference]: Finished difference Result 4357 states and 6856 transitions. [2023-04-01 23:36:30,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-01 23:36:30,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.833333333333334) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 95 [2023-04-01 23:36:30,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:36:30,100 INFO L225 Difference]: With dead ends: 4357 [2023-04-01 23:36:30,101 INFO L226 Difference]: Without dead ends: 2938 [2023-04-01 23:36:30,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:36:30,109 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 3817 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 4845 mSolverCounterSat, 825 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3817 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 5670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 825 IncrementalHoareTripleChecker+Valid, 4845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:36:30,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3817 Valid, 123 Invalid, 5670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [825 Valid, 4845 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-04-01 23:36:30,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2023-04-01 23:36:30,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2886. [2023-04-01 23:36:30,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2831 states have (on average 1.373719533733663) internal successors, (3889), 2842 states have internal predecessors, (3889), 14 states have call successors, (14), 14 states have call predecessors, (14), 40 states have return successors, (85), 29 states have call predecessors, (85), 13 states have call successors, (85) [2023-04-01 23:36:30,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 3988 transitions. [2023-04-01 23:36:30,192 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 3988 transitions. Word has length 95 [2023-04-01 23:36:30,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:36:30,193 INFO L495 AbstractCegarLoop]: Abstraction has 2886 states and 3988 transitions. [2023-04-01 23:36:30,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.833333333333334) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 23:36:30,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 3988 transitions. [2023-04-01 23:36:30,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-04-01 23:36:30,200 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:36:30,200 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1] [2023-04-01 23:36:30,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 23:36:30,200 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:36:30,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:36:30,201 INFO L85 PathProgramCache]: Analyzing trace with hash -288625931, now seen corresponding path program 1 times [2023-04-01 23:36:30,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:36:30,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99099509] [2023-04-01 23:36:30,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:30,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:36:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:30,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:36:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:30,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:36:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:30,507 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:36:30,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:36:30,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99099509] [2023-04-01 23:36:30,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99099509] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:36:30,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668217175] [2023-04-01 23:36:30,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:30,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:30,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:36:30,518 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) [2023-04-01 23:36:30,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 23:36:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:30,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:36:30,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:36:30,759 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:36:30,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:36:30,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668217175] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:36:30,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:36:30,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:36:30,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321673382] [2023-04-01 23:36:30,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:36:30,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:36:30,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:36:30,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:36:30,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:36:30,762 INFO L87 Difference]: Start difference. First operand 2886 states and 3988 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 23:36:33,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:36:33,302 INFO L93 Difference]: Finished difference Result 8621 states and 12068 transitions. [2023-04-01 23:36:33,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:36:33,309 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 122 [2023-04-01 23:36:33,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:36:33,337 INFO L225 Difference]: With dead ends: 8621 [2023-04-01 23:36:33,337 INFO L226 Difference]: Without dead ends: 5741 [2023-04-01 23:36:33,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:36:33,347 INFO L413 NwaCegarLoop]: 1234 mSDtfsCounter, 693 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 803 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 2724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 803 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-04-01 23:36:33,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 1260 Invalid, 2724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [803 Valid, 1921 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-04-01 23:36:33,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5741 states. [2023-04-01 23:36:33,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5741 to 5741. [2023-04-01 23:36:33,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5741 states, 5644 states have (on average 1.2661233167965982) internal successors, (7146), 5662 states have internal predecessors, (7146), 26 states have call successors, (26), 26 states have call predecessors, (26), 70 states have return successors, (240), 52 states have call predecessors, (240), 25 states have call successors, (240) [2023-04-01 23:36:33,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5741 states to 5741 states and 7412 transitions. [2023-04-01 23:36:33,505 INFO L78 Accepts]: Start accepts. Automaton has 5741 states and 7412 transitions. Word has length 122 [2023-04-01 23:36:33,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:36:33,507 INFO L495 AbstractCegarLoop]: Abstraction has 5741 states and 7412 transitions. [2023-04-01 23:36:33,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 23:36:33,507 INFO L276 IsEmpty]: Start isEmpty. Operand 5741 states and 7412 transitions. [2023-04-01 23:36:33,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-04-01 23:36:33,514 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:36:33,515 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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] [2023-04-01 23:36:33,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 23:36:33,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:33,721 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:36:33,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:36:33,722 INFO L85 PathProgramCache]: Analyzing trace with hash -616726570, now seen corresponding path program 1 times [2023-04-01 23:36:33,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:36:33,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104447454] [2023-04-01 23:36:33,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:33,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:36:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:33,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:36:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:33,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:36:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:33,984 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:36:33,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:36:33,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104447454] [2023-04-01 23:36:33,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104447454] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:36:33,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732144874] [2023-04-01 23:36:33,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:33,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:33,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:36:33,987 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) [2023-04-01 23:36:33,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 23:36:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:34,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:36:34,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:36:34,129 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:36:34,130 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:36:34,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732144874] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:36:34,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:36:34,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:36:34,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057654028] [2023-04-01 23:36:34,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:36:34,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:36:34,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:36:34,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:36:34,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:36:34,139 INFO L87 Difference]: Start difference. First operand 5741 states and 7412 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 23:36:36,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:36:36,394 INFO L93 Difference]: Finished difference Result 16472 states and 21737 transitions. [2023-04-01 23:36:36,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:36:36,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 147 [2023-04-01 23:36:36,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:36:36,436 INFO L225 Difference]: With dead ends: 16472 [2023-04-01 23:36:36,436 INFO L226 Difference]: Without dead ends: 10737 [2023-04-01 23:36:36,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:36:36,451 INFO L413 NwaCegarLoop]: 971 mSDtfsCounter, 761 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 2785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:36:36,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 997 Invalid, 2785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-01 23:36:36,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10737 states. [2023-04-01 23:36:36,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10737 to 10737. [2023-04-01 23:36:36,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10737 states, 10566 states have (on average 1.254590194964982) internal successors, (13256), 10598 states have internal predecessors, (13256), 47 states have call successors, (47), 47 states have call predecessors, (47), 123 states have return successors, (639), 91 states have call predecessors, (639), 46 states have call successors, (639) [2023-04-01 23:36:36,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10737 states to 10737 states and 13942 transitions. [2023-04-01 23:36:36,717 INFO L78 Accepts]: Start accepts. Automaton has 10737 states and 13942 transitions. Word has length 147 [2023-04-01 23:36:36,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:36:36,718 INFO L495 AbstractCegarLoop]: Abstraction has 10737 states and 13942 transitions. [2023-04-01 23:36:36,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-04-01 23:36:36,726 INFO L276 IsEmpty]: Start isEmpty. Operand 10737 states and 13942 transitions. [2023-04-01 23:36:36,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-04-01 23:36:36,728 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:36:36,729 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2023-04-01 23:36:36,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-04-01 23:36:36,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-04-01 23:36:36,934 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:36:36,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:36:36,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1759039783, now seen corresponding path program 1 times [2023-04-01 23:36:36,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:36:36,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872884974] [2023-04-01 23:36:36,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:36,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:36:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:37,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:36:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:37,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:36:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:37,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-04-01 23:36:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:37,215 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-04-01 23:36:37,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:36:37,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872884974] [2023-04-01 23:36:37,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872884974] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:36:37,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025642665] [2023-04-01 23:36:37,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:37,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:37,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:36:37,217 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) [2023-04-01 23:36:37,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-01 23:36:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:37,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:36:37,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:36:37,433 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-04-01 23:36:37,433 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:36:37,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025642665] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:36:37,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:36:37,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2023-04-01 23:36:37,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583306136] [2023-04-01 23:36:37,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:36:37,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:36:37,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:36:37,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:36:37,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-04-01 23:36:37,435 INFO L87 Difference]: Start difference. First operand 10737 states and 13942 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:36:40,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:36:40,473 INFO L93 Difference]: Finished difference Result 21700 states and 28498 transitions. [2023-04-01 23:36:40,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-01 23:36:40,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 182 [2023-04-01 23:36:40,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:36:40,510 INFO L225 Difference]: With dead ends: 21700 [2023-04-01 23:36:40,510 INFO L226 Difference]: Without dead ends: 10969 [2023-04-01 23:36:40,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-04-01 23:36:40,532 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 2248 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 3457 mSolverCounterSat, 1396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2248 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 4853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1396 IncrementalHoareTripleChecker+Valid, 3457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:36:40,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2248 Valid, 78 Invalid, 4853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1396 Valid, 3457 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-04-01 23:36:40,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10969 states. [2023-04-01 23:36:40,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10969 to 10898. [2023-04-01 23:36:40,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10898 states, 10664 states have (on average 1.140285071267817) internal successors, (12160), 10724 states have internal predecessors, (12160), 47 states have call successors, (47), 47 states have call predecessors, (47), 186 states have return successors, (623), 126 states have call predecessors, (623), 46 states have call successors, (623) [2023-04-01 23:36:40,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10898 states to 10898 states and 12830 transitions. [2023-04-01 23:36:40,768 INFO L78 Accepts]: Start accepts. Automaton has 10898 states and 12830 transitions. Word has length 182 [2023-04-01 23:36:40,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:36:40,769 INFO L495 AbstractCegarLoop]: Abstraction has 10898 states and 12830 transitions. [2023-04-01 23:36:40,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 3 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 23:36:40,770 INFO L276 IsEmpty]: Start isEmpty. Operand 10898 states and 12830 transitions. [2023-04-01 23:36:40,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-04-01 23:36:40,773 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:36:40,774 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:36:40,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-04-01 23:36:40,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:40,979 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:36:40,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:36:40,979 INFO L85 PathProgramCache]: Analyzing trace with hash -646734114, now seen corresponding path program 1 times [2023-04-01 23:36:40,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:36:40,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218818765] [2023-04-01 23:36:40,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:40,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:36:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:41,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:36:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:41,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:36:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:41,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:36:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:41,344 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-01 23:36:41,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:36:41,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218818765] [2023-04-01 23:36:41,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218818765] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:36:41,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175107923] [2023-04-01 23:36:41,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:41,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:41,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:36:41,346 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) [2023-04-01 23:36:41,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-04-01 23:36:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:41,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:36:41,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:36:41,629 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:36:41,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:36:41,996 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 23:36:41,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175107923] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:36:41,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:36:41,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:36:41,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784250042] [2023-04-01 23:36:41,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:36:41,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:36:41,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:36:41,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:36:41,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:36:41,999 INFO L87 Difference]: Start difference. First operand 10898 states and 12830 transitions. Second operand has 12 states, 12 states have (on average 35.166666666666664) internal successors, (422), 10 states have internal predecessors, (422), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 23:36:50,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:36:50,875 INFO L93 Difference]: Finished difference Result 34508 states and 42795 transitions. [2023-04-01 23:36:50,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-04-01 23:36:50,876 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 35.166666666666664) internal successors, (422), 10 states have internal predecessors, (422), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 241 [2023-04-01 23:36:50,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:36:50,935 INFO L225 Difference]: With dead ends: 34508 [2023-04-01 23:36:50,935 INFO L226 Difference]: Without dead ends: 21257 [2023-04-01 23:36:50,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 488 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:36:50,959 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 4638 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 15146 mSolverCounterSat, 2334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4643 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 17480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2334 IncrementalHoareTripleChecker+Valid, 15146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-04-01 23:36:50,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4643 Valid, 270 Invalid, 17480 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2334 Valid, 15146 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2023-04-01 23:36:50,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21257 states. [2023-04-01 23:36:51,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21257 to 17559. [2023-04-01 23:36:51,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17559 states, 17132 states have (on average 1.0627480737800608) internal successors, (18207), 17266 states have internal predecessors, (18207), 74 states have call successors, (74), 74 states have call predecessors, (74), 352 states have return successors, (1150), 218 states have call predecessors, (1150), 73 states have call successors, (1150) [2023-04-01 23:36:51,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17559 states to 17559 states and 19431 transitions. [2023-04-01 23:36:51,356 INFO L78 Accepts]: Start accepts. Automaton has 17559 states and 19431 transitions. Word has length 241 [2023-04-01 23:36:51,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:36:51,356 INFO L495 AbstractCegarLoop]: Abstraction has 17559 states and 19431 transitions. [2023-04-01 23:36:51,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 35.166666666666664) internal successors, (422), 10 states have internal predecessors, (422), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-04-01 23:36:51,359 INFO L276 IsEmpty]: Start isEmpty. Operand 17559 states and 19431 transitions. [2023-04-01 23:36:51,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-04-01 23:36:51,364 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:36:51,364 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2023-04-01 23:36:51,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-04-01 23:36:51,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:51,571 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:36:51,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:36:51,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1151864850, now seen corresponding path program 1 times [2023-04-01 23:36:51,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:36:51,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621696003] [2023-04-01 23:36:51,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:51,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:36:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:51,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:36:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:51,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:36:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:51,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:36:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:51,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:36:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:51,928 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 23:36:51,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:36:51,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621696003] [2023-04-01 23:36:51,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621696003] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:36:51,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621959514] [2023-04-01 23:36:51,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:51,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:51,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:36:51,933 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) [2023-04-01 23:36:51,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-04-01 23:36:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:52,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:36:52,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:36:52,099 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-04-01 23:36:52,099 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:36:52,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621959514] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:36:52,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:36:52,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:36:52,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780199026] [2023-04-01 23:36:52,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:36:52,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:36:52,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:36:52,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:36:52,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:36:52,102 INFO L87 Difference]: Start difference. First operand 17559 states and 19431 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:36:53,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:36:53,779 INFO L93 Difference]: Finished difference Result 35112 states and 38878 transitions. [2023-04-01 23:36:53,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:36:53,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 341 [2023-04-01 23:36:53,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:36:53,834 INFO L225 Difference]: With dead ends: 35112 [2023-04-01 23:36:53,834 INFO L226 Difference]: Without dead ends: 17559 [2023-04-01 23:36:53,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:36:53,868 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 718 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1698 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:36:53,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 174 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1698 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-04-01 23:36:53,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17559 states. [2023-04-01 23:36:54,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17559 to 17549. [2023-04-01 23:36:54,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17549 states, 17126 states have (on average 1.0499240920238235) internal successors, (17981), 17258 states have internal predecessors, (17981), 74 states have call successors, (74), 74 states have call predecessors, (74), 348 states have return successors, (950), 216 states have call predecessors, (950), 73 states have call successors, (950) [2023-04-01 23:36:54,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17549 states to 17549 states and 19005 transitions. [2023-04-01 23:36:54,320 INFO L78 Accepts]: Start accepts. Automaton has 17549 states and 19005 transitions. Word has length 341 [2023-04-01 23:36:54,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:36:54,321 INFO L495 AbstractCegarLoop]: Abstraction has 17549 states and 19005 transitions. [2023-04-01 23:36:54,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:36:54,321 INFO L276 IsEmpty]: Start isEmpty. Operand 17549 states and 19005 transitions. [2023-04-01 23:36:54,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-04-01 23:36:54,327 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:36:54,327 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1] [2023-04-01 23:36:54,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-04-01 23:36:54,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:54,534 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:36:54,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:36:54,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1082672655, now seen corresponding path program 1 times [2023-04-01 23:36:54,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:36:54,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073247084] [2023-04-01 23:36:54,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:54,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:36:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:54,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:36:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:54,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:36:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:54,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:36:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:54,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:36:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:54,971 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-04-01 23:36:54,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:36:54,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073247084] [2023-04-01 23:36:54,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073247084] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:36:54,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350493098] [2023-04-01 23:36:54,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:54,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:54,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:36:54,985 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) [2023-04-01 23:36:55,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-04-01 23:36:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:55,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:36:55,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:36:55,180 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-04-01 23:36:55,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:36:55,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350493098] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:36:55,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:36:55,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:36:55,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497564106] [2023-04-01 23:36:55,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:36:55,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:36:55,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:36:55,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:36:55,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:36:55,182 INFO L87 Difference]: Start difference. First operand 17549 states and 19005 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:36:57,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:36:57,079 INFO L93 Difference]: Finished difference Result 44357 states and 48733 transitions. [2023-04-01 23:36:57,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:36:57,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 348 [2023-04-01 23:36:57,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:36:57,156 INFO L225 Difference]: With dead ends: 44357 [2023-04-01 23:36:57,156 INFO L226 Difference]: Without dead ends: 26084 [2023-04-01 23:36:57,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:36:57,184 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 690 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 2045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:36:57,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 950 Invalid, 2045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1759 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-01 23:36:57,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26084 states. [2023-04-01 23:36:57,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26084 to 25369. [2023-04-01 23:36:57,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25369 states, 24840 states have (on average 1.0484299516908213) internal successors, (26043), 24994 states have internal predecessors, (26043), 107 states have call successors, (107), 107 states have call predecessors, (107), 421 states have return successors, (1567), 267 states have call predecessors, (1567), 106 states have call successors, (1567) [2023-04-01 23:36:57,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25369 states to 25369 states and 27717 transitions. [2023-04-01 23:36:57,667 INFO L78 Accepts]: Start accepts. Automaton has 25369 states and 27717 transitions. Word has length 348 [2023-04-01 23:36:57,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:36:57,668 INFO L495 AbstractCegarLoop]: Abstraction has 25369 states and 27717 transitions. [2023-04-01 23:36:57,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:36:57,668 INFO L276 IsEmpty]: Start isEmpty. Operand 25369 states and 27717 transitions. [2023-04-01 23:36:57,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2023-04-01 23:36:57,675 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:36:57,675 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:36:57,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-04-01 23:36:57,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:57,882 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:36:57,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:36:57,882 INFO L85 PathProgramCache]: Analyzing trace with hash -127926838, now seen corresponding path program 1 times [2023-04-01 23:36:57,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:36:57,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540758527] [2023-04-01 23:36:57,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:57,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:36:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:58,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:36:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:58,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:36:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:58,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:36:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:58,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:36:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:58,220 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:36:58,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:36:58,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540758527] [2023-04-01 23:36:58,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540758527] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:36:58,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288651289] [2023-04-01 23:36:58,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:36:58,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:36:58,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:36:58,222 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) [2023-04-01 23:36:58,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-04-01 23:36:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:36:58,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:36:58,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:36:58,403 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:36:58,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:36:58,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288651289] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:36:58,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:36:58,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-04-01 23:36:58,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626175899] [2023-04-01 23:36:58,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:36:58,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-01 23:36:58,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:36:58,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-01 23:36:58,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:36:58,407 INFO L87 Difference]: Start difference. First operand 25369 states and 27717 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:37:00,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:37:00,341 INFO L93 Difference]: Finished difference Result 57122 states and 63016 transitions. [2023-04-01 23:37:00,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-01 23:37:00,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 401 [2023-04-01 23:37:00,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:37:00,416 INFO L225 Difference]: With dead ends: 57122 [2023-04-01 23:37:00,417 INFO L226 Difference]: Without dead ends: 31047 [2023-04-01 23:37:00,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-04-01 23:37:00,452 INFO L413 NwaCegarLoop]: 870 mSDtfsCounter, 691 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 2076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-04-01 23:37:00,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 895 Invalid, 2076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-04-01 23:37:00,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31047 states. [2023-04-01 23:37:01,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31047 to 29641. [2023-04-01 23:37:01,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29641 states, 29051 states have (on average 1.0539396234208804) internal successors, (30618), 29220 states have internal predecessors, (30618), 125 states have call successors, (125), 125 states have call predecessors, (125), 464 states have return successors, (2147), 295 states have call predecessors, (2147), 124 states have call successors, (2147) [2023-04-01 23:37:01,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29641 states to 29641 states and 32890 transitions. [2023-04-01 23:37:01,095 INFO L78 Accepts]: Start accepts. Automaton has 29641 states and 32890 transitions. Word has length 401 [2023-04-01 23:37:01,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:37:01,096 INFO L495 AbstractCegarLoop]: Abstraction has 29641 states and 32890 transitions. [2023-04-01 23:37:01,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-01 23:37:01,096 INFO L276 IsEmpty]: Start isEmpty. Operand 29641 states and 32890 transitions. [2023-04-01 23:37:01,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 744 [2023-04-01 23:37:01,146 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:37:01,147 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1] [2023-04-01 23:37:01,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-04-01 23:37:01,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:01,353 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:37:01,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:37:01,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1754866787, now seen corresponding path program 1 times [2023-04-01 23:37:01,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:37:01,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403270941] [2023-04-01 23:37:01,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:01,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:37:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:01,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:37:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:01,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:37:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:01,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:37:01,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:01,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:37:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:01,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2023-04-01 23:37:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:01,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:37:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:02,027 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 227 proven. 73 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:37:02,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:37:02,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403270941] [2023-04-01 23:37:02,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403270941] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:37:02,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258445244] [2023-04-01 23:37:02,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:02,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:02,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:37:02,029 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) [2023-04-01 23:37:02,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-04-01 23:37:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:02,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:37:02,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:37:02,519 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 504 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-04-01 23:37:02,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:37:02,782 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 229 proven. 74 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-04-01 23:37:02,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258445244] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:37:02,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:37:02,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:37:02,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251845959] [2023-04-01 23:37:02,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:37:02,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:37:02,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:37:02,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:37:02,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:37:02,786 INFO L87 Difference]: Start difference. First operand 29641 states and 32890 transitions. Second operand has 11 states, 11 states have (on average 95.36363636363636) internal successors, (1049), 9 states have internal predecessors, (1049), 4 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 23:37:07,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:37:07,867 INFO L93 Difference]: Finished difference Result 81940 states and 92509 transitions. [2023-04-01 23:37:07,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-04-01 23:37:07,873 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 95.36363636363636) internal successors, (1049), 9 states have internal predecessors, (1049), 4 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 743 [2023-04-01 23:37:07,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:37:08,013 INFO L225 Difference]: With dead ends: 81940 [2023-04-01 23:37:08,013 INFO L226 Difference]: Without dead ends: 53015 [2023-04-01 23:37:08,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1521 GetRequests, 1500 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2023-04-01 23:37:08,057 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 3320 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 7267 mSolverCounterSat, 1093 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3323 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 8360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1093 IncrementalHoareTripleChecker+Valid, 7267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:37:08,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3323 Valid, 152 Invalid, 8360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1093 Valid, 7267 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-04-01 23:37:08,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53015 states. [2023-04-01 23:37:08,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53015 to 44533. [2023-04-01 23:37:08,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44533 states, 43756 states have (on average 1.0484733522259804) internal successors, (45877), 43958 states have internal predecessors, (45877), 188 states have call successors, (188), 188 states have call predecessors, (188), 588 states have return successors, (3055), 386 states have call predecessors, (3055), 187 states have call successors, (3055) [2023-04-01 23:37:08,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44533 states to 44533 states and 49120 transitions. [2023-04-01 23:37:08,943 INFO L78 Accepts]: Start accepts. Automaton has 44533 states and 49120 transitions. Word has length 743 [2023-04-01 23:37:08,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:37:08,944 INFO L495 AbstractCegarLoop]: Abstraction has 44533 states and 49120 transitions. [2023-04-01 23:37:08,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 95.36363636363636) internal successors, (1049), 9 states have internal predecessors, (1049), 4 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-04-01 23:37:08,944 INFO L276 IsEmpty]: Start isEmpty. Operand 44533 states and 49120 transitions. [2023-04-01 23:37:09,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2023-04-01 23:37:09,001 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:37:09,001 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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] [2023-04-01 23:37:09,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-04-01 23:37:09,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-04-01 23:37:09,211 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:37:09,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:37:09,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1036983912, now seen corresponding path program 1 times [2023-04-01 23:37:09,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:37:09,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495201500] [2023-04-01 23:37:09,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:09,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:37:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:10,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:37:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:10,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:37:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:10,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:37:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:10,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2023-04-01 23:37:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:10,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:37:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 398 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-04-01 23:37:10,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:37:10,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495201500] [2023-04-01 23:37:10,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495201500] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:37:10,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080394780] [2023-04-01 23:37:10,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:10,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:10,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:37:10,845 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) [2023-04-01 23:37:10,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-04-01 23:37:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:11,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 6 conjunts are in the unsatisfiable core [2023-04-01 23:37:11,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:37:11,602 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 400 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-04-01 23:37:11,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:37:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 400 proven. 2 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-04-01 23:37:12,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080394780] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:37:12,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:37:12,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:37:12,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233012458] [2023-04-01 23:37:12,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:37:12,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:37:12,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:37:12,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:37:12,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:37:12,731 INFO L87 Difference]: Start difference. First operand 44533 states and 49120 transitions. Second operand has 11 states, 11 states have (on average 134.45454545454547) internal successors, (1479), 9 states have internal predecessors, (1479), 7 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-04-01 23:37:18,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:37:18,764 INFO L93 Difference]: Finished difference Result 99966 states and 110720 transitions. [2023-04-01 23:37:18,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-04-01 23:37:18,765 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 134.45454545454547) internal successors, (1479), 9 states have internal predecessors, (1479), 7 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 786 [2023-04-01 23:37:18,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:37:18,899 INFO L225 Difference]: With dead ends: 99966 [2023-04-01 23:37:18,899 INFO L226 Difference]: Without dead ends: 55429 [2023-04-01 23:37:18,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1641 GetRequests, 1602 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=279, Invalid=1127, Unknown=0, NotChecked=0, Total=1406 [2023-04-01 23:37:18,943 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 5066 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 9152 mSolverCounterSat, 641 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5066 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 9793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 9152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:37:18,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5066 Valid, 449 Invalid, 9793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [641 Valid, 9152 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-04-01 23:37:18,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55429 states. [2023-04-01 23:37:20,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55429 to 55365. [2023-04-01 23:37:20,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55365 states, 54370 states have (on average 1.038201213904727) internal successors, (56447), 54654 states have internal predecessors, (56447), 233 states have call successors, (233), 233 states have call predecessors, (233), 761 states have return successors, (3435), 477 states have call predecessors, (3435), 232 states have call successors, (3435) [2023-04-01 23:37:20,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55365 states to 55365 states and 60115 transitions. [2023-04-01 23:37:20,118 INFO L78 Accepts]: Start accepts. Automaton has 55365 states and 60115 transitions. Word has length 786 [2023-04-01 23:37:20,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:37:20,119 INFO L495 AbstractCegarLoop]: Abstraction has 55365 states and 60115 transitions. [2023-04-01 23:37:20,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 134.45454545454547) internal successors, (1479), 9 states have internal predecessors, (1479), 7 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-04-01 23:37:20,119 INFO L276 IsEmpty]: Start isEmpty. Operand 55365 states and 60115 transitions. [2023-04-01 23:37:20,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2023-04-01 23:37:20,161 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:37:20,162 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:37:20,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-04-01 23:37:20,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:20,369 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:37:20,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:37:20,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1964284203, now seen corresponding path program 1 times [2023-04-01 23:37:20,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:37:20,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104198521] [2023-04-01 23:37:20,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:20,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:37:20,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:21,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:37:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:21,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:37:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:21,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-04-01 23:37:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:21,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-04-01 23:37:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:22,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:37:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:22,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:37:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:22,505 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-04-01 23:37:22,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:37:22,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104198521] [2023-04-01 23:37:22,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104198521] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:37:22,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050061175] [2023-04-01 23:37:22,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:22,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:22,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:37:22,507 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) [2023-04-01 23:37:22,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-04-01 23:37:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:22,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 11 conjunts are in the unsatisfiable core [2023-04-01 23:37:22,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:37:23,250 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-04-01 23:37:23,250 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:37:23,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050061175] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:37:23,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:37:23,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 23:37:23,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583243195] [2023-04-01 23:37:23,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:37:23,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:37:23,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:37:23,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:37:23,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:37:23,253 INFO L87 Difference]: Start difference. First operand 55365 states and 60115 transitions. Second operand has 5 states, 5 states have (on average 133.4) internal successors, (667), 4 states have internal predecessors, (667), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:37:26,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:37:26,027 INFO L93 Difference]: Finished difference Result 115032 states and 124755 transitions. [2023-04-01 23:37:26,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:37:26,027 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 133.4) internal successors, (667), 4 states have internal predecessors, (667), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 801 [2023-04-01 23:37:26,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:37:26,270 INFO L225 Difference]: With dead ends: 115032 [2023-04-01 23:37:26,270 INFO L226 Difference]: Without dead ends: 60383 [2023-04-01 23:37:26,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 813 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:37:26,436 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 1899 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 3205 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1899 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 3403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 3205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:37:26,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1899 Valid, 109 Invalid, 3403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 3205 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-04-01 23:37:26,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60383 states. [2023-04-01 23:37:27,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60383 to 60357. [2023-04-01 23:37:27,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60357 states, 59287 states have (on average 1.0359606659132694) internal successors, (61419), 59592 states have internal predecessors, (61419), 254 states have call successors, (254), 254 states have call predecessors, (254), 815 states have return successors, (3570), 510 states have call predecessors, (3570), 253 states have call successors, (3570) [2023-04-01 23:37:27,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60357 states to 60357 states and 65243 transitions. [2023-04-01 23:37:27,382 INFO L78 Accepts]: Start accepts. Automaton has 60357 states and 65243 transitions. Word has length 801 [2023-04-01 23:37:27,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:37:27,383 INFO L495 AbstractCegarLoop]: Abstraction has 60357 states and 65243 transitions. [2023-04-01 23:37:27,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.4) internal successors, (667), 4 states have internal predecessors, (667), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-04-01 23:37:27,383 INFO L276 IsEmpty]: Start isEmpty. Operand 60357 states and 65243 transitions. [2023-04-01 23:37:27,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1109 [2023-04-01 23:37:27,446 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:37:27,447 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:37:27,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-04-01 23:37:27,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-01 23:37:27,654 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:37:27,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:37:27,654 INFO L85 PathProgramCache]: Analyzing trace with hash -995854198, now seen corresponding path program 1 times [2023-04-01 23:37:27,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:37:27,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384379719] [2023-04-01 23:37:27,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:27,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:37:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:28,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:37:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:28,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:37:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:29,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:37:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:29,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-04-01 23:37:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:29,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2023-04-01 23:37:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:29,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2023-04-01 23:37:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:29,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:37:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:29,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:37:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:29,907 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 80 proven. 4 refuted. 0 times theorem prover too weak. 857 trivial. 0 not checked. [2023-04-01 23:37:29,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:37:29,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384379719] [2023-04-01 23:37:29,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384379719] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:37:29,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143860064] [2023-04-01 23:37:29,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:29,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:29,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:37:29,909 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) [2023-04-01 23:37:29,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-04-01 23:37:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:30,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:37:30,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:37:30,675 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 550 proven. 0 refuted. 0 times theorem prover too weak. 391 trivial. 0 not checked. [2023-04-01 23:37:30,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 23:37:30,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143860064] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 23:37:30,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-04-01 23:37:30,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-04-01 23:37:30,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486769907] [2023-04-01 23:37:30,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 23:37:30,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-01 23:37:30,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:37:30,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-01 23:37:30,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-04-01 23:37:30,678 INFO L87 Difference]: Start difference. First operand 60357 states and 65243 transitions. Second operand has 5 states, 5 states have (on average 170.2) internal successors, (851), 4 states have internal predecessors, (851), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-01 23:37:33,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:37:33,286 INFO L93 Difference]: Finished difference Result 120046 states and 129857 transitions. [2023-04-01 23:37:33,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-01 23:37:33,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 170.2) internal successors, (851), 4 states have internal predecessors, (851), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 1108 [2023-04-01 23:37:33,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:37:33,431 INFO L225 Difference]: With dead ends: 120046 [2023-04-01 23:37:33,431 INFO L226 Difference]: Without dead ends: 60405 [2023-04-01 23:37:33,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1133 GetRequests, 1124 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:37:33,494 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 1541 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 3273 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 3726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 3273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:37:33,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 115 Invalid, 3726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 3273 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-01 23:37:33,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60405 states. [2023-04-01 23:37:34,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60405 to 59698. [2023-04-01 23:37:34,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59698 states, 58616 states have (on average 1.032704381056367) internal successors, (60533), 58932 states have internal predecessors, (60533), 251 states have call successors, (251), 251 states have call predecessors, (251), 830 states have return successors, (3258), 514 states have call predecessors, (3258), 250 states have call successors, (3258) [2023-04-01 23:37:34,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59698 states to 59698 states and 64042 transitions. [2023-04-01 23:37:34,523 INFO L78 Accepts]: Start accepts. Automaton has 59698 states and 64042 transitions. Word has length 1108 [2023-04-01 23:37:34,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:37:34,524 INFO L495 AbstractCegarLoop]: Abstraction has 59698 states and 64042 transitions. [2023-04-01 23:37:34,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.2) internal successors, (851), 4 states have internal predecessors, (851), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2023-04-01 23:37:34,524 INFO L276 IsEmpty]: Start isEmpty. Operand 59698 states and 64042 transitions. [2023-04-01 23:37:34,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1636 [2023-04-01 23:37:34,602 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:37:34,604 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:37:34,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-04-01 23:37:34,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-04-01 23:37:34,811 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:37:34,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:37:34,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1422507709, now seen corresponding path program 1 times [2023-04-01 23:37:34,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:37:34,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567953357] [2023-04-01 23:37:34,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:34,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:37:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:36,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:37:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:36,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:37:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:36,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:37:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:36,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:37:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:36,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:37:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:36,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:37:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:36,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:37:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:36,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2023-04-01 23:37:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:36,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1070 [2023-04-01 23:37:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:37,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:37:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:37,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:37:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:37,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2021 backedges. 106 proven. 5 refuted. 0 times theorem prover too weak. 1910 trivial. 0 not checked. [2023-04-01 23:37:37,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:37:37,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567953357] [2023-04-01 23:37:37,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567953357] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:37:37,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149864862] [2023-04-01 23:37:37,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:37,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:37,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:37:37,329 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) [2023-04-01 23:37:37,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-04-01 23:37:37,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:37,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 2061 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:37:37,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:37:38,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2021 backedges. 1574 proven. 2 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2023-04-01 23:37:38,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:37:40,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2021 backedges. 354 proven. 229 refuted. 0 times theorem prover too weak. 1438 trivial. 0 not checked. [2023-04-01 23:37:40,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149864862] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:37:40,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:37:40,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-04-01 23:37:40,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592403058] [2023-04-01 23:37:40,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:37:40,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-04-01 23:37:40,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:37:40,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-04-01 23:37:40,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-04-01 23:37:40,590 INFO L87 Difference]: Start difference. First operand 59698 states and 64042 transitions. Second operand has 10 states, 10 states have (on average 136.9) internal successors, (1369), 8 states have internal predecessors, (1369), 5 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-04-01 23:37:49,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:37:49,896 INFO L93 Difference]: Finished difference Result 153974 states and 167332 transitions. [2023-04-01 23:37:49,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-04-01 23:37:49,897 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 136.9) internal successors, (1369), 8 states have internal predecessors, (1369), 5 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 1635 [2023-04-01 23:37:49,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:37:50,089 INFO L225 Difference]: With dead ends: 153974 [2023-04-01 23:37:50,089 INFO L226 Difference]: Without dead ends: 93578 [2023-04-01 23:37:50,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3342 GetRequests, 3311 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2023-04-01 23:37:50,152 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 6339 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 11113 mSolverCounterSat, 1268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6339 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 12381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1268 IncrementalHoareTripleChecker+Valid, 11113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-04-01 23:37:50,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6339 Valid, 239 Invalid, 12381 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1268 Valid, 11113 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-04-01 23:37:50,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93578 states. [2023-04-01 23:37:51,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93578 to 89316. [2023-04-01 23:37:51,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89316 states, 87925 states have (on average 1.0307989764003411) internal successors, (90633), 88278 states have internal predecessors, (90633), 377 states have call successors, (377), 377 states have call predecessors, (377), 1013 states have return successors, (4901), 660 states have call predecessors, (4901), 376 states have call successors, (4901) [2023-04-01 23:37:51,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89316 states to 89316 states and 95911 transitions. [2023-04-01 23:37:51,442 INFO L78 Accepts]: Start accepts. Automaton has 89316 states and 95911 transitions. Word has length 1635 [2023-04-01 23:37:51,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:37:51,443 INFO L495 AbstractCegarLoop]: Abstraction has 89316 states and 95911 transitions. [2023-04-01 23:37:51,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 136.9) internal successors, (1369), 8 states have internal predecessors, (1369), 5 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2023-04-01 23:37:51,444 INFO L276 IsEmpty]: Start isEmpty. Operand 89316 states and 95911 transitions. [2023-04-01 23:37:51,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1673 [2023-04-01 23:37:51,521 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:37:51,522 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:37:51,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-04-01 23:37:51,729 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,SelfDestructingSolverStorable13 [2023-04-01 23:37:51,729 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:37:51,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:37:51,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2063471054, now seen corresponding path program 1 times [2023-04-01 23:37:51,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:37:51,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255432693] [2023-04-01 23:37:51,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:51,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:37:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:53,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:37:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:53,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:37:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:53,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:37:53,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:53,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:37:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:53,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:37:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:53,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:37:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:53,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:37:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:53,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2023-04-01 23:37:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:53,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1003 [2023-04-01 23:37:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:53,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1099 [2023-04-01 23:37:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:54,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:37:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:54,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:37:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2252 backedges. 477 proven. 104 refuted. 0 times theorem prover too weak. 1671 trivial. 0 not checked. [2023-04-01 23:37:54,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:37:54,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255432693] [2023-04-01 23:37:54,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255432693] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:37:54,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752422481] [2023-04-01 23:37:54,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:37:54,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:37:54,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:37:54,140 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) [2023-04-01 23:37:54,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-04-01 23:37:54,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:37:54,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 2145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-04-01 23:37:54,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:37:54,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2252 backedges. 1540 proven. 2 refuted. 0 times theorem prover too weak. 710 trivial. 0 not checked. [2023-04-01 23:37:54,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:37:55,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2252 backedges. 484 proven. 96 refuted. 0 times theorem prover too weak. 1672 trivial. 0 not checked. [2023-04-01 23:37:55,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752422481] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:37:55,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:37:55,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 11 [2023-04-01 23:37:55,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878219970] [2023-04-01 23:37:55,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:37:55,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:37:55,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:37:55,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:37:55,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:37:55,068 INFO L87 Difference]: Start difference. First operand 89316 states and 95911 transitions. Second operand has 11 states, 11 states have (on average 126.72727272727273) internal successors, (1394), 9 states have internal predecessors, (1394), 4 states have call successors, (18), 7 states have call predecessors, (18), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-01 23:37:58,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:37:58,629 INFO L93 Difference]: Finished difference Result 178673 states and 191892 transitions. [2023-04-01 23:37:58,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-04-01 23:37:58,630 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 126.72727272727273) internal successors, (1394), 9 states have internal predecessors, (1394), 4 states have call successors, (18), 7 states have call predecessors, (18), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 1672 [2023-04-01 23:37:58,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:37:58,809 INFO L225 Difference]: With dead ends: 178673 [2023-04-01 23:37:58,810 INFO L226 Difference]: Without dead ends: 90073 [2023-04-01 23:37:58,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3386 GetRequests, 3369 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-04-01 23:37:58,892 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3566 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 4416 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3566 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 4918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 4416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:37:58,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3566 Valid, 117 Invalid, 4918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 4416 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-04-01 23:37:58,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90073 states. [2023-04-01 23:38:00,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90073 to 89351. [2023-04-01 23:38:00,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89351 states, 87946 states have (on average 1.030314056352762) internal successors, (90612), 88306 states have internal predecessors, (90612), 377 states have call successors, (377), 377 states have call predecessors, (377), 1027 states have return successors, (4820), 667 states have call predecessors, (4820), 376 states have call successors, (4820) [2023-04-01 23:38:00,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89351 states to 89351 states and 95809 transitions. [2023-04-01 23:38:00,515 INFO L78 Accepts]: Start accepts. Automaton has 89351 states and 95809 transitions. Word has length 1672 [2023-04-01 23:38:00,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:38:00,516 INFO L495 AbstractCegarLoop]: Abstraction has 89351 states and 95809 transitions. [2023-04-01 23:38:00,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 126.72727272727273) internal successors, (1394), 9 states have internal predecessors, (1394), 4 states have call successors, (18), 7 states have call predecessors, (18), 5 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-04-01 23:38:00,516 INFO L276 IsEmpty]: Start isEmpty. Operand 89351 states and 95809 transitions. [2023-04-01 23:38:00,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1683 [2023-04-01 23:38:00,737 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:38:00,738 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:38:00,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-04-01 23:38:00,964 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,SelfDestructingSolverStorable14 [2023-04-01 23:38:00,964 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:38:00,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:38:00,965 INFO L85 PathProgramCache]: Analyzing trace with hash -485749630, now seen corresponding path program 1 times [2023-04-01 23:38:00,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:38:00,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145861087] [2023-04-01 23:38:00,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:00,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:38:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:02,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:38:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:02,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:38:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:03,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:03,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:38:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:03,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:38:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:03,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:03,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:38:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:03,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2023-04-01 23:38:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:03,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1003 [2023-04-01 23:38:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:03,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1109 [2023-04-01 23:38:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:03,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:03,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:38:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:03,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 497 proven. 144 refuted. 0 times theorem prover too weak. 1641 trivial. 0 not checked. [2023-04-01 23:38:03,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:38:03,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145861087] [2023-04-01 23:38:03,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145861087] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:38:03,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301616872] [2023-04-01 23:38:03,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:03,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:38:03,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:38:03,609 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) [2023-04-01 23:38:03,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-04-01 23:38:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:03,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 2151 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:38:03,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:38:04,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 1570 proven. 2 refuted. 0 times theorem prover too weak. 710 trivial. 0 not checked. [2023-04-01 23:38:04,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:38:05,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 504 proven. 106 refuted. 0 times theorem prover too weak. 1672 trivial. 0 not checked. [2023-04-01 23:38:05,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301616872] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:38:05,911 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:38:05,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2023-04-01 23:38:05,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816110891] [2023-04-01 23:38:05,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:38:05,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 23:38:05,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:38:05,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 23:38:05,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-04-01 23:38:05,917 INFO L87 Difference]: Start difference. First operand 89351 states and 95809 transitions. Second operand has 15 states, 15 states have (on average 96.26666666666667) internal successors, (1444), 13 states have internal predecessors, (1444), 7 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-04-01 23:38:18,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:38:18,610 INFO L93 Difference]: Finished difference Result 188678 states and 203580 transitions. [2023-04-01 23:38:18,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-04-01 23:38:18,611 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 96.26666666666667) internal successors, (1444), 13 states have internal predecessors, (1444), 7 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 1682 [2023-04-01 23:38:18,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:38:18,836 INFO L225 Difference]: With dead ends: 188678 [2023-04-01 23:38:18,837 INFO L226 Difference]: Without dead ends: 100043 [2023-04-01 23:38:18,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3504 GetRequests, 3437 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1437 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=671, Invalid=3885, Unknown=0, NotChecked=0, Total=4556 [2023-04-01 23:38:18,906 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 16469 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 18638 mSolverCounterSat, 1359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16469 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 19997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1359 IncrementalHoareTripleChecker+Valid, 18638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-04-01 23:38:18,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16469 Valid, 517 Invalid, 19997 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1359 Valid, 18638 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2023-04-01 23:38:18,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100043 states. [2023-04-01 23:38:20,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100043 to 95681. [2023-04-01 23:38:20,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95681 states, 94218 states have (on average 1.0205693179647202) internal successors, (96156), 94578 states have internal predecessors, (96156), 404 states have call successors, (404), 404 states have call predecessors, (404), 1058 states have return successors, (3728), 698 states have call predecessors, (3728), 403 states have call successors, (3728) [2023-04-01 23:38:20,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95681 states to 95681 states and 100288 transitions. [2023-04-01 23:38:20,279 INFO L78 Accepts]: Start accepts. Automaton has 95681 states and 100288 transitions. Word has length 1682 [2023-04-01 23:38:20,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:38:20,280 INFO L495 AbstractCegarLoop]: Abstraction has 95681 states and 100288 transitions. [2023-04-01 23:38:20,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 96.26666666666667) internal successors, (1444), 13 states have internal predecessors, (1444), 7 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-04-01 23:38:20,280 INFO L276 IsEmpty]: Start isEmpty. Operand 95681 states and 100288 transitions. [2023-04-01 23:38:20,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1756 [2023-04-01 23:38:20,339 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:38:20,340 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:38:20,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-04-01 23:38:20,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:38:20,547 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:38:20,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:38:20,548 INFO L85 PathProgramCache]: Analyzing trace with hash -993050729, now seen corresponding path program 1 times [2023-04-01 23:38:20,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:38:20,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766942053] [2023-04-01 23:38:20,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:20,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:38:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:22,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:38:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:22,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:38:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:22,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:38:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:38:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:23,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:38:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2023-04-01 23:38:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1003 [2023-04-01 23:38:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1076 [2023-04-01 23:38:23,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1182 [2023-04-01 23:38:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:38:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2736 backedges. 594 proven. 162 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2023-04-01 23:38:23,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:38:23,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766942053] [2023-04-01 23:38:23,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766942053] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:38:23,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396410410] [2023-04-01 23:38:23,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:23,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:38:23,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:38:23,461 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) [2023-04-01 23:38:23,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-04-01 23:38:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:23,923 INFO L262 TraceCheckSpWp]: Trace formula consists of 2264 conjuncts, 7 conjunts are in the unsatisfiable core [2023-04-01 23:38:23,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:38:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2736 backedges. 1737 proven. 2 refuted. 0 times theorem prover too weak. 997 trivial. 0 not checked. [2023-04-01 23:38:24,306 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:38:26,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2736 backedges. 602 proven. 106 refuted. 0 times theorem prover too weak. 2028 trivial. 0 not checked. [2023-04-01 23:38:26,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396410410] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:38:26,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:38:26,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2023-04-01 23:38:26,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580704327] [2023-04-01 23:38:26,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:38:26,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-01 23:38:26,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:38:26,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-01 23:38:26,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-04-01 23:38:26,575 INFO L87 Difference]: Start difference. First operand 95681 states and 100288 transitions. Second operand has 15 states, 15 states have (on average 96.33333333333333) internal successors, (1445), 13 states have internal predecessors, (1445), 7 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2023-04-01 23:38:41,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:38:41,112 INFO L93 Difference]: Finished difference Result 194223 states and 203587 transitions. [2023-04-01 23:38:41,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-04-01 23:38:41,113 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 96.33333333333333) internal successors, (1445), 13 states have internal predecessors, (1445), 7 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 1755 [2023-04-01 23:38:41,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:38:41,477 INFO L225 Difference]: With dead ends: 194223 [2023-04-01 23:38:41,477 INFO L226 Difference]: Without dead ends: 99258 [2023-04-01 23:38:41,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3661 GetRequests, 3590 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1643 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=731, Invalid=4381, Unknown=0, NotChecked=0, Total=5112 [2023-04-01 23:38:41,540 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 15255 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 22386 mSolverCounterSat, 1144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15262 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 23530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1144 IncrementalHoareTripleChecker+Valid, 22386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-04-01 23:38:41,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15262 Valid, 678 Invalid, 23530 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1144 Valid, 22386 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2023-04-01 23:38:41,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99258 states. [2023-04-01 23:38:42,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99258 to 97823. [2023-04-01 23:38:42,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97823 states, 96327 states have (on average 1.018364529155896) internal successors, (98096), 96696 states have internal predecessors, (98096), 413 states have call successors, (413), 413 states have call predecessors, (413), 1082 states have return successors, (3502), 713 states have call predecessors, (3502), 412 states have call successors, (3502) [2023-04-01 23:38:43,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97823 states to 97823 states and 102011 transitions. [2023-04-01 23:38:43,069 INFO L78 Accepts]: Start accepts. Automaton has 97823 states and 102011 transitions. Word has length 1755 [2023-04-01 23:38:43,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:38:43,070 INFO L495 AbstractCegarLoop]: Abstraction has 97823 states and 102011 transitions. [2023-04-01 23:38:43,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 96.33333333333333) internal successors, (1445), 13 states have internal predecessors, (1445), 7 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2023-04-01 23:38:43,070 INFO L276 IsEmpty]: Start isEmpty. Operand 97823 states and 102011 transitions. [2023-04-01 23:38:43,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1832 [2023-04-01 23:38:43,157 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:38:43,158 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:38:43,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-04-01 23:38:43,358 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,SelfDestructingSolverStorable16 [2023-04-01 23:38:43,359 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:38:43,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:38:43,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1866961737, now seen corresponding path program 1 times [2023-04-01 23:38:43,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:38:43,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814718357] [2023-04-01 23:38:43,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:43,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:38:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:44,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:38:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:44,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:38:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:44,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:44,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:38:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:44,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:38:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:44,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:44,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:38:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:44,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2023-04-01 23:38:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:45,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1162 [2023-04-01 23:38:45,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:45,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1258 [2023-04-01 23:38:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:45,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:45,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:38:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:45,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2773 backedges. 1373 proven. 4 refuted. 0 times theorem prover too weak. 1396 trivial. 0 not checked. [2023-04-01 23:38:45,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:38:45,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814718357] [2023-04-01 23:38:45,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814718357] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:38:45,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624892016] [2023-04-01 23:38:45,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:45,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:38:45,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:38:45,611 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) [2023-04-01 23:38:45,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-04-01 23:38:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:46,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 2302 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:38:46,118 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:38:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2773 backedges. 1368 proven. 2 refuted. 0 times theorem prover too weak. 1403 trivial. 0 not checked. [2023-04-01 23:38:46,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:38:48,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2773 backedges. 1368 proven. 2 refuted. 0 times theorem prover too weak. 1403 trivial. 0 not checked. [2023-04-01 23:38:48,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624892016] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:38:48,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:38:48,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-04-01 23:38:48,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696761299] [2023-04-01 23:38:48,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:38:48,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-01 23:38:48,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:38:48,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-01 23:38:48,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-04-01 23:38:48,129 INFO L87 Difference]: Start difference. First operand 97823 states and 102011 transitions. Second operand has 11 states, 11 states have (on average 199.72727272727272) internal successors, (2197), 9 states have internal predecessors, (2197), 7 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-04-01 23:38:52,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:38:52,895 INFO L93 Difference]: Finished difference Result 195027 states and 203631 transitions. [2023-04-01 23:38:52,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-01 23:38:52,896 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 199.72727272727272) internal successors, (2197), 9 states have internal predecessors, (2197), 7 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 1831 [2023-04-01 23:38:52,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:38:53,084 INFO L225 Difference]: With dead ends: 195027 [2023-04-01 23:38:53,085 INFO L226 Difference]: Without dead ends: 97920 [2023-04-01 23:38:53,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3712 GetRequests, 3690 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2023-04-01 23:38:53,160 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 4702 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 7219 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4702 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 7533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 7219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-04-01 23:38:53,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4702 Valid, 183 Invalid, 7533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 7219 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-04-01 23:38:53,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97920 states. [2023-04-01 23:38:54,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97920 to 97823. [2023-04-01 23:38:54,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97823 states, 96327 states have (on average 1.0179700395527733) internal successors, (98058), 96696 states have internal predecessors, (98058), 413 states have call successors, (413), 413 states have call predecessors, (413), 1082 states have return successors, (3432), 713 states have call predecessors, (3432), 412 states have call successors, (3432) [2023-04-01 23:38:54,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97823 states to 97823 states and 101903 transitions. [2023-04-01 23:38:54,535 INFO L78 Accepts]: Start accepts. Automaton has 97823 states and 101903 transitions. Word has length 1831 [2023-04-01 23:38:54,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:38:54,536 INFO L495 AbstractCegarLoop]: Abstraction has 97823 states and 101903 transitions. [2023-04-01 23:38:54,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 199.72727272727272) internal successors, (2197), 9 states have internal predecessors, (2197), 7 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2023-04-01 23:38:54,536 INFO L276 IsEmpty]: Start isEmpty. Operand 97823 states and 101903 transitions. [2023-04-01 23:38:54,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1935 [2023-04-01 23:38:54,630 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:38:54,631 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:38:54,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-04-01 23:38:54,838 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,SelfDestructingSolverStorable17 [2023-04-01 23:38:54,838 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:38:54,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:38:54,839 INFO L85 PathProgramCache]: Analyzing trace with hash -421321556, now seen corresponding path program 1 times [2023-04-01 23:38:54,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:38:54,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393299275] [2023-04-01 23:38:54,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:54,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:38:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:57,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:38:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:57,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:38:57,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:57,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:57,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:38:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:57,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:38:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:57,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:57,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:38:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:58,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2023-04-01 23:38:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:58,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1040 [2023-04-01 23:38:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:58,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:58,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1361 [2023-04-01 23:38:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:58,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:38:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:58,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:38:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:58,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 1446 proven. 69 refuted. 0 times theorem prover too weak. 1565 trivial. 0 not checked. [2023-04-01 23:38:58,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:38:58,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393299275] [2023-04-01 23:38:58,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393299275] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:38:58,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870302399] [2023-04-01 23:38:58,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:38:58,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:38:58,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:38:58,682 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) [2023-04-01 23:38:58,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-04-01 23:38:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:38:59,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 2427 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:38:59,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:38:59,663 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 1474 proven. 5 refuted. 0 times theorem prover too weak. 1601 trivial. 0 not checked. [2023-04-01 23:38:59,663 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:39:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 1474 proven. 5 refuted. 0 times theorem prover too weak. 1601 trivial. 0 not checked. [2023-04-01 23:39:01,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870302399] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:39:01,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:39:01,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 14 [2023-04-01 23:39:01,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847816441] [2023-04-01 23:39:01,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:39:01,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 23:39:01,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:01,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 23:39:01,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:39:01,049 INFO L87 Difference]: Start difference. First operand 97823 states and 101903 transitions. Second operand has 14 states, 14 states have (on average 158.28571428571428) internal successors, (2216), 12 states have internal predecessors, (2216), 10 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2023-04-01 23:39:08,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:08,711 INFO L93 Difference]: Finished difference Result 195652 states and 203870 transitions. [2023-04-01 23:39:08,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-04-01 23:39:08,712 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 158.28571428571428) internal successors, (2216), 12 states have internal predecessors, (2216), 10 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) Word has length 1934 [2023-04-01 23:39:08,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:08,889 INFO L225 Difference]: With dead ends: 195652 [2023-04-01 23:39:08,890 INFO L226 Difference]: Without dead ends: 95011 [2023-04-01 23:39:08,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3942 GetRequests, 3910 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=665, Unknown=0, NotChecked=0, Total=870 [2023-04-01 23:39:08,959 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 11200 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 12373 mSolverCounterSat, 822 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11200 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 13195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 822 IncrementalHoareTripleChecker+Valid, 12373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:08,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11200 Valid, 313 Invalid, 13195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [822 Valid, 12373 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-04-01 23:39:09,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95011 states. [2023-04-01 23:39:10,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95011 to 93571. [2023-04-01 23:39:10,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93571 states, 92126 states have (on average 1.0151965785988755) internal successors, (93526), 92490 states have internal predecessors, (93526), 395 states have call successors, (395), 395 states have call predecessors, (395), 1049 states have return successors, (2862), 685 states have call predecessors, (2862), 394 states have call successors, (2862) [2023-04-01 23:39:10,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93571 states to 93571 states and 96783 transitions. [2023-04-01 23:39:10,417 INFO L78 Accepts]: Start accepts. Automaton has 93571 states and 96783 transitions. Word has length 1934 [2023-04-01 23:39:10,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:10,418 INFO L495 AbstractCegarLoop]: Abstraction has 93571 states and 96783 transitions. [2023-04-01 23:39:10,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 158.28571428571428) internal successors, (2216), 12 states have internal predecessors, (2216), 10 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2023-04-01 23:39:10,418 INFO L276 IsEmpty]: Start isEmpty. Operand 93571 states and 96783 transitions. [2023-04-01 23:39:10,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2027 [2023-04-01 23:39:10,511 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:10,512 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:39:10,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-04-01 23:39:10,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:10,713 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:10,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:10,713 INFO L85 PathProgramCache]: Analyzing trace with hash -638941418, now seen corresponding path program 1 times [2023-04-01 23:39:10,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:10,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673568439] [2023-04-01 23:39:10,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:10,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:11,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:11,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:39:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:11,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:39:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:11,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:39:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:11,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:39:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:12,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:39:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:12,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:39:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:12,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 932 [2023-04-01 23:39:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:12,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1162 [2023-04-01 23:39:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:12,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1258 [2023-04-01 23:39:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:12,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1453 [2023-04-01 23:39:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:12,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:39:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:12,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:39:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:12,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3757 backedges. 340 proven. 353 refuted. 0 times theorem prover too weak. 3064 trivial. 0 not checked. [2023-04-01 23:39:12,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:12,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673568439] [2023-04-01 23:39:12,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673568439] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:39:12,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592551194] [2023-04-01 23:39:12,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:12,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:12,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:39:12,354 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) [2023-04-01 23:39:12,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-04-01 23:39:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:12,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 2536 conjuncts, 9 conjunts are in the unsatisfiable core [2023-04-01 23:39:12,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:39:13,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3757 backedges. 2830 proven. 2 refuted. 0 times theorem prover too weak. 925 trivial. 0 not checked. [2023-04-01 23:39:13,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:39:17,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3757 backedges. 716 proven. 517 refuted. 0 times theorem prover too weak. 2524 trivial. 0 not checked. [2023-04-01 23:39:17,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592551194] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:39:17,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:39:17,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-04-01 23:39:17,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857189187] [2023-04-01 23:39:17,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:39:17,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-04-01 23:39:17,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:17,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-04-01 23:39:17,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-04-01 23:39:17,295 INFO L87 Difference]: Start difference. First operand 93571 states and 96783 transitions. Second operand has 12 states, 12 states have (on average 138.91666666666666) internal successors, (1667), 10 states have internal predecessors, (1667), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-04-01 23:39:24,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 23:39:24,115 INFO L93 Difference]: Finished difference Result 197810 states and 205037 transitions. [2023-04-01 23:39:24,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-04-01 23:39:24,116 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 138.91666666666666) internal successors, (1667), 10 states have internal predecessors, (1667), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 2026 [2023-04-01 23:39:24,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 23:39:24,328 INFO L225 Difference]: With dead ends: 197810 [2023-04-01 23:39:24,328 INFO L226 Difference]: Without dead ends: 104955 [2023-04-01 23:39:24,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4111 GetRequests, 4086 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=479, Unknown=0, NotChecked=0, Total=650 [2023-04-01 23:39:24,400 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 4159 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 9198 mSolverCounterSat, 552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4159 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 9750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 9198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-04-01 23:39:24,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4159 Valid, 276 Invalid, 9750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [552 Valid, 9198 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-04-01 23:39:24,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104955 states. [2023-04-01 23:39:25,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104955 to 103391. [2023-04-01 23:39:25,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103391 states, 101865 states have (on average 1.0126932705050802) internal successors, (103158), 102228 states have internal predecessors, (103158), 437 states have call successors, (437), 437 states have call predecessors, (437), 1088 states have return successors, (2713), 725 states have call predecessors, (2713), 436 states have call successors, (2713) [2023-04-01 23:39:26,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103391 states to 103391 states and 106308 transitions. [2023-04-01 23:39:26,008 INFO L78 Accepts]: Start accepts. Automaton has 103391 states and 106308 transitions. Word has length 2026 [2023-04-01 23:39:26,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 23:39:26,008 INFO L495 AbstractCegarLoop]: Abstraction has 103391 states and 106308 transitions. [2023-04-01 23:39:26,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 138.91666666666666) internal successors, (1667), 10 states have internal predecessors, (1667), 5 states have call successors, (17), 6 states have call predecessors, (17), 7 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-04-01 23:39:26,009 INFO L276 IsEmpty]: Start isEmpty. Operand 103391 states and 106308 transitions. [2023-04-01 23:39:26,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2206 [2023-04-01 23:39:26,099 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 23:39:26,100 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 23:39:26,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-04-01 23:39:26,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:26,300 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 23:39:26,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 23:39:26,301 INFO L85 PathProgramCache]: Analyzing trace with hash 77838253, now seen corresponding path program 1 times [2023-04-01 23:39:26,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-01 23:39:26,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283722233] [2023-04-01 23:39:26,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:26,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 23:39:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:28,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-01 23:39:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:28,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-04-01 23:39:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:28,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:39:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:28,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:39:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:28,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2023-04-01 23:39:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:28,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:39:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:28,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2023-04-01 23:39:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:28,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2023-04-01 23:39:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:28,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1107 [2023-04-01 23:39:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:28,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:39:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:28,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1494 [2023-04-01 23:39:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:28,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1632 [2023-04-01 23:39:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:29,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-04-01 23:39:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:29,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-04-01 23:39:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:29,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4342 backedges. 1640 proven. 522 refuted. 0 times theorem prover too weak. 2180 trivial. 0 not checked. [2023-04-01 23:39:29,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-01 23:39:29,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283722233] [2023-04-01 23:39:29,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283722233] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-01 23:39:29,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15330001] [2023-04-01 23:39:29,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 23:39:29,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 23:39:29,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 23:39:29,215 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) [2023-04-01 23:39:29,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-04-01 23:39:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 23:39:29,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 2735 conjuncts, 8 conjunts are in the unsatisfiable core [2023-04-01 23:39:29,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 23:39:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 4342 backedges. 3033 proven. 2 refuted. 0 times theorem prover too weak. 1307 trivial. 0 not checked. [2023-04-01 23:39:30,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-01 23:39:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4342 backedges. 532 proven. 362 refuted. 0 times theorem prover too weak. 3448 trivial. 0 not checked. [2023-04-01 23:39:31,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15330001] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-01 23:39:31,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-01 23:39:31,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-04-01 23:39:31,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088272962] [2023-04-01 23:39:31,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-01 23:39:31,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-01 23:39:31,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-01 23:39:31,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-01 23:39:31,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-04-01 23:39:31,609 INFO L87 Difference]: Start difference. First operand 103391 states and 106308 transitions. Second operand has 14 states, 14 states have (on average 124.92857142857143) internal successors, (1749), 12 states have internal predecessors, (1749), 7 states have call successors, (19), 6 states have call predecessors, (19), 8 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16)