/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/ldv-regression/test22-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 00:08:08,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 00:08:08,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 00:08:08,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-31 00:08:08,860 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 [2023-03-31 00:08:08,908 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 00:08:08,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 00:08:08,908 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 00:08:08,908 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 00:08:08,909 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 00:08:08,909 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 00:08:08,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 00:08:08,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 00:08:08,910 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 00:08:08,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 00:08:08,911 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 00:08:08,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 00:08:08,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 00:08:08,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 00:08:08,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 00:08:08,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 00:08:08,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 00:08:08,911 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 00:08:08,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 00:08:08,911 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 00:08:08,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 00:08:08,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 00:08:08,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 00:08:08,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 00:08:08,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:08:08,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 00:08:08,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 00:08:08,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 00:08:08,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 00:08:08,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 00:08:08,912 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 00:08:08,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 00:08:08,912 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 00:08:08,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 00:08:08,913 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 00:08:08,913 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 00:08:09,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 00:08:09,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 00:08:09,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 00:08:09,265 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 00:08:09,265 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 00:08:09,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test22-1.c [2023-03-31 00:08:10,405 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 00:08:10,563 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 00:08:10,564 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test22-1.c [2023-03-31 00:08:10,568 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feaa201cd/a7f47c9af90544e2a3e97979246eafbf/FLAG0100fc15c [2023-03-31 00:08:10,582 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/feaa201cd/a7f47c9af90544e2a3e97979246eafbf [2023-03-31 00:08:10,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 00:08:10,585 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 00:08:10,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 00:08:10,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 00:08:10,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 00:08:10,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:08:10" (1/1) ... [2023-03-31 00:08:10,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76450a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:10, skipping insertion in model container [2023-03-31 00:08:10,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 12:08:10" (1/1) ... [2023-03-31 00:08:10,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 00:08:10,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 00:08:10,730 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/ldv-regression/test22-1.c[1029,1042] [2023-03-31 00:08:10,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:08:10,741 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 00:08:10,758 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/ldv-regression/test22-1.c[1029,1042] [2023-03-31 00:08:10,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 00:08:10,769 INFO L208 MainTranslator]: Completed translation [2023-03-31 00:08:10,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:10 WrapperNode [2023-03-31 00:08:10,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 00:08:10,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 00:08:10,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 00:08:10,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 00:08:10,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:10" (1/1) ... [2023-03-31 00:08:10,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:10" (1/1) ... [2023-03-31 00:08:10,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:10" (1/1) ... [2023-03-31 00:08:10,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:10" (1/1) ... [2023-03-31 00:08:10,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:10" (1/1) ... [2023-03-31 00:08:10,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:10" (1/1) ... [2023-03-31 00:08:10,804 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:10" (1/1) ... [2023-03-31 00:08:10,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:10" (1/1) ... [2023-03-31 00:08:10,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 00:08:10,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 00:08:10,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 00:08:10,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 00:08:10,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:10" (1/1) ... [2023-03-31 00:08:10,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 00:08:10,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:08:10,900 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) [2023-03-31 00:08:10,902 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 [2023-03-31 00:08:10,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 00:08:10,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 00:08:10,928 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 00:08:10,928 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-03-31 00:08:10,928 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2023-03-31 00:08:10,928 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-03-31 00:08:10,928 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 00:08:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 00:08:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 00:08:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 00:08:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 00:08:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 00:08:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 00:08:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 00:08:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 00:08:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2023-03-31 00:08:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 00:08:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 00:08:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 00:08:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 00:08:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 00:08:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 00:08:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 00:08:10,985 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 00:08:10,986 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 00:08:11,093 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 00:08:11,096 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 00:08:11,097 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 00:08:11,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:08:11 BoogieIcfgContainer [2023-03-31 00:08:11,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 00:08:11,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 00:08:11,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 00:08:11,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 00:08:11,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 12:08:10" (1/3) ... [2023-03-31 00:08:11,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1367f170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:08:11, skipping insertion in model container [2023-03-31 00:08:11,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 12:08:10" (2/3) ... [2023-03-31 00:08:11,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1367f170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 12:08:11, skipping insertion in model container [2023-03-31 00:08:11,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 12:08:11" (3/3) ... [2023-03-31 00:08:11,103 INFO L112 eAbstractionObserver]: Analyzing ICFG test22-1.c [2023-03-31 00:08:11,114 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 00:08:11,114 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 00:08:11,166 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 00:08:11,170 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;@4b6da745, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 00:08:11,170 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 00:08:11,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 22 states have internal predecessors, (27), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-03-31 00:08:11,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-03-31 00:08:11,177 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:08:11,177 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:08:11,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:08:11,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:08:11,181 INFO L85 PathProgramCache]: Analyzing trace with hash -277664811, now seen corresponding path program 1 times [2023-03-31 00:08:11,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:08:11,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661578918] [2023-03-31 00:08:11,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:08:11,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:08:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:11,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:08:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:11,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-03-31 00:08:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:11,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 00:08:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:11,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-03-31 00:08:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:11,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 00:08:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:11,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-03-31 00:08:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:11,437 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-03-31 00:08:11,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:08:11,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661578918] [2023-03-31 00:08:11,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661578918] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:08:11,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:08:11,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 00:08:11,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313175124] [2023-03-31 00:08:11,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:08:11,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 00:08:11,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:08:11,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 00:08:11,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 00:08:11,469 INFO L87 Difference]: Start difference. First operand has 35 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 22 states have internal predecessors, (27), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-31 00:08:11,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:08:11,586 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2023-03-31 00:08:11,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 00:08:11,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 34 [2023-03-31 00:08:11,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:08:11,595 INFO L225 Difference]: With dead ends: 48 [2023-03-31 00:08:11,595 INFO L226 Difference]: Without dead ends: 30 [2023-03-31 00:08:11,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 00:08:11,599 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 32 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:08:11,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 7 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:08:11,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-03-31 00:08:11,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-03-31 00:08:11,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-31 00:08:11,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2023-03-31 00:08:11,629 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 34 [2023-03-31 00:08:11,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:08:11,629 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2023-03-31 00:08:11,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-31 00:08:11,630 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2023-03-31 00:08:11,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-03-31 00:08:11,631 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:08:11,631 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:08:11,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 00:08:11,631 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:08:11,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:08:11,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1849383995, now seen corresponding path program 1 times [2023-03-31 00:08:11,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:08:11,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060095059] [2023-03-31 00:08:11,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:08:11,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:08:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:11,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:08:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:11,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-03-31 00:08:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:12,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 00:08:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:12,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-03-31 00:08:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:12,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 00:08:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:12,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-03-31 00:08:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:12,011 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-03-31 00:08:12,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:08:12,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060095059] [2023-03-31 00:08:12,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060095059] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 00:08:12,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 00:08:12,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-03-31 00:08:12,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504469228] [2023-03-31 00:08:12,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 00:08:12,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 00:08:12,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:08:12,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 00:08:12,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-03-31 00:08:12,021 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-31 00:08:12,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:08:12,263 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2023-03-31 00:08:12,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 00:08:12,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2023-03-31 00:08:12,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:08:12,265 INFO L225 Difference]: With dead ends: 41 [2023-03-31 00:08:12,265 INFO L226 Difference]: Without dead ends: 33 [2023-03-31 00:08:12,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-03-31 00:08:12,269 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 50 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:08:12,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 9 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:08:12,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-03-31 00:08:12,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2023-03-31 00:08:12,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-31 00:08:12,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2023-03-31 00:08:12,276 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 35 [2023-03-31 00:08:12,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:08:12,276 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2023-03-31 00:08:12,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-31 00:08:12,276 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2023-03-31 00:08:12,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-03-31 00:08:12,283 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:08:12,283 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2023-03-31 00:08:12,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 00:08:12,284 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:08:12,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:08:12,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1650614890, now seen corresponding path program 1 times [2023-03-31 00:08:12,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:08:12,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811837524] [2023-03-31 00:08:12,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:08:12,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:08:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:12,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:08:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:12,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-03-31 00:08:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:12,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 00:08:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:12,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-03-31 00:08:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:12,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 00:08:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:12,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-03-31 00:08:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:12,512 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-03-31 00:08:12,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:08:12,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811837524] [2023-03-31 00:08:12,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811837524] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:08:12,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327086787] [2023-03-31 00:08:12,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:08:12,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:08:12,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:08:12,515 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) [2023-03-31 00:08:12,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 00:08:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:12,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 18 conjunts are in the unsatisfiable core [2023-03-31 00:08:12,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:08:12,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-03-31 00:08:12,733 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-03-31 00:08:12,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:08:12,782 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-03-31 00:08:12,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-03-31 00:08:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-03-31 00:08:12,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327086787] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:08:12,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:08:12,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 17 [2023-03-31 00:08:12,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20446490] [2023-03-31 00:08:12,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:08:12,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-03-31 00:08:12,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:08:12,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-03-31 00:08:12,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-03-31 00:08:12,807 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 15 states have internal predecessors, (35), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 00:08:13,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:08:13,250 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2023-03-31 00:08:13,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-03-31 00:08:13,251 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 15 states have internal predecessors, (35), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 37 [2023-03-31 00:08:13,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:08:13,253 INFO L225 Difference]: With dead ends: 47 [2023-03-31 00:08:13,253 INFO L226 Difference]: Without dead ends: 39 [2023-03-31 00:08:13,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2023-03-31 00:08:13,257 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 85 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:08:13,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 11 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:08:13,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-03-31 00:08:13,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2023-03-31 00:08:13,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-31 00:08:13,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2023-03-31 00:08:13,271 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 37 [2023-03-31 00:08:13,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:08:13,271 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2023-03-31 00:08:13,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0588235294117645) internal successors, (35), 15 states have internal predecessors, (35), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 00:08:13,271 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2023-03-31 00:08:13,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-03-31 00:08:13,272 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:08:13,272 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:08:13,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-31 00:08:13,473 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 [2023-03-31 00:08:13,473 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:08:13,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:08:13,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1516920537, now seen corresponding path program 2 times [2023-03-31 00:08:13,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:08:13,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909887206] [2023-03-31 00:08:13,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:08:13,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:08:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:13,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:08:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:13,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-03-31 00:08:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:13,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 00:08:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:13,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-03-31 00:08:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:13,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 00:08:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:13,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-03-31 00:08:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-03-31 00:08:13,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:08:13,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909887206] [2023-03-31 00:08:13,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909887206] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:08:13,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770250498] [2023-03-31 00:08:13,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-03-31 00:08:13,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:08:13,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:08:13,999 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) [2023-03-31 00:08:14,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 00:08:14,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-03-31 00:08:14,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 00:08:14,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 19 conjunts are in the unsatisfiable core [2023-03-31 00:08:14,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:08:14,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-03-31 00:08:14,264 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-03-31 00:08:14,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:08:14,353 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-03-31 00:08:14,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-03-31 00:08:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-03-31 00:08:14,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770250498] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:08:14,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:08:14,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 26 [2023-03-31 00:08:14,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292863849] [2023-03-31 00:08:14,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:08:14,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-03-31 00:08:14,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:08:14,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-03-31 00:08:14,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2023-03-31 00:08:14,375 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 24 states have internal predecessors, (53), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 00:08:15,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:08:15,120 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2023-03-31 00:08:15,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-03-31 00:08:15,121 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 24 states have internal predecessors, (53), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2023-03-31 00:08:15,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:08:15,121 INFO L225 Difference]: With dead ends: 59 [2023-03-31 00:08:15,122 INFO L226 Difference]: Without dead ends: 51 [2023-03-31 00:08:15,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=615, Invalid=1737, Unknown=0, NotChecked=0, Total=2352 [2023-03-31 00:08:15,123 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 107 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 00:08:15,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 15 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 00:08:15,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-03-31 00:08:15,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2023-03-31 00:08:15,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-03-31 00:08:15,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2023-03-31 00:08:15,131 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 43 [2023-03-31 00:08:15,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:08:15,131 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2023-03-31 00:08:15,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.0384615384615383) internal successors, (53), 24 states have internal predecessors, (53), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-03-31 00:08:15,131 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2023-03-31 00:08:15,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-03-31 00:08:15,132 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 00:08:15,132 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 00:08:15,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-03-31 00:08:15,349 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 [2023-03-31 00:08:15,349 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 00:08:15,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 00:08:15,350 INFO L85 PathProgramCache]: Analyzing trace with hash -236378615, now seen corresponding path program 3 times [2023-03-31 00:08:15,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 00:08:15,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66018186] [2023-03-31 00:08:15,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 00:08:15,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 00:08:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:16,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 00:08:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:16,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-03-31 00:08:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:16,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-03-31 00:08:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:16,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-03-31 00:08:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:16,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-03-31 00:08:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:16,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-03-31 00:08:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 00:08:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 2 proven. 48 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-03-31 00:08:16,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 00:08:16,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66018186] [2023-03-31 00:08:16,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66018186] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 00:08:16,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434528501] [2023-03-31 00:08:16,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-03-31 00:08:16,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 00:08:16,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 00:08:16,137 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) [2023-03-31 00:08:16,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-31 00:08:16,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-03-31 00:08:16,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-03-31 00:08:16,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 41 conjunts are in the unsatisfiable core [2023-03-31 00:08:16,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 00:08:16,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2023-03-31 00:08:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-03-31 00:08:16,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 00:08:16,784 INFO L321 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-03-31 00:08:16,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-03-31 00:08:16,802 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-03-31 00:08:16,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434528501] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 00:08:16,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 00:08:16,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 32 [2023-03-31 00:08:16,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861755503] [2023-03-31 00:08:16,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 00:08:16,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-03-31 00:08:16,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 00:08:16,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-03-31 00:08:16,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2023-03-31 00:08:16,804 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 32 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 5 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-03-31 00:08:17,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 00:08:17,618 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2023-03-31 00:08:17,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-03-31 00:08:17,619 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 5 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 55 [2023-03-31 00:08:17,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 00:08:17,619 INFO L225 Difference]: With dead ends: 51 [2023-03-31 00:08:17,619 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 00:08:17,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=260, Invalid=1810, Unknown=0, NotChecked=0, Total=2070 [2023-03-31 00:08:17,621 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 52 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-03-31 00:08:17,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 35 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-03-31 00:08:17,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 00:08:17,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 00:08:17,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-03-31 00:08:17,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 00:08:17,622 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2023-03-31 00:08:17,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 00:08:17,622 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 00:08:17,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 29 states have internal predecessors, (51), 5 states have call successors, (14), 4 states have call predecessors, (14), 6 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-03-31 00:08:17,622 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 00:08:17,622 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 00:08:17,624 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 00:08:17,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-03-31 00:08:17,829 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 [2023-03-31 00:08:17,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-03-31 00:08:18,052 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2023-03-31 00:08:18,052 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2023-03-31 00:08:18,052 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 3) no Hoare annotation was computed. [2023-03-31 00:08:18,052 INFO L899 garLoopResultBuilder]: For program point initEXIT(lines 13 20) no Hoare annotation was computed. [2023-03-31 00:08:18,052 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 13 20) the Hoare annotation is: (or (not (= |~#d1~0.offset| 0)) (= |#memory_int| |old(#memory_int)|) (not (= |~#d2~0.offset| 0))) [2023-03-31 00:08:18,052 INFO L899 garLoopResultBuilder]: For program point initFINAL(lines 13 20) no Hoare annotation was computed. [2023-03-31 00:08:18,052 INFO L899 garLoopResultBuilder]: For program point L35-2(line 35) no Hoare annotation was computed. [2023-03-31 00:08:18,052 INFO L899 garLoopResultBuilder]: For program point L37-4(lines 37 46) no Hoare annotation was computed. [2023-03-31 00:08:18,052 INFO L895 garLoopResultBuilder]: At program point L35-3(line 35) the Hoare annotation is: (let ((.cse0 (= main_~pd2~0.offset 0))) (or (not (= |~#d1~0.offset| 0)) (not (= |~#d2~0.offset| 0)) (and .cse0 (= main_~pd2~0.base |~#d2~0.base|)) (and (not (= |~#d1~0.base| |~#d2~0.base|)) .cse0))) [2023-03-31 00:08:18,053 INFO L899 garLoopResultBuilder]: For program point L35-4(line 35) no Hoare annotation was computed. [2023-03-31 00:08:18,053 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 32 52) no Hoare annotation was computed. [2023-03-31 00:08:18,053 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 32 52) no Hoare annotation was computed. [2023-03-31 00:08:18,053 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 32 52) the Hoare annotation is: (or (not (= |~#d1~0.offset| 0)) (= |#memory_int| |old(#memory_int)|) (not (= |~#d2~0.offset| 0))) [2023-03-31 00:08:18,053 INFO L899 garLoopResultBuilder]: For program point L40-1(lines 40 42) no Hoare annotation was computed. [2023-03-31 00:08:18,053 INFO L895 garLoopResultBuilder]: At program point L40-3(lines 40 42) the Hoare annotation is: (or (not (= |~#d1~0.offset| 0)) (not (= |~#d2~0.offset| 0)) (and (= main_~pd2~0.base main_~pd1~0.base) (= main_~pd2~0.offset main_~pd1~0.offset) (let ((.cse0 (= main_~pd2~0.offset 0))) (or (and .cse0 (= main_~pd2~0.base |~#d2~0.base|)) (and (not (= |~#d1~0.base| |~#d2~0.base|)) .cse0))) (= main_~pd2~0.base main_~pa~0.base) (= main_~pd2~0.offset main_~pa~0.offset) (not (= main_~pd1~0.base 0)) (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)))) [2023-03-31 00:08:18,053 INFO L895 garLoopResultBuilder]: At program point L40-4(lines 40 42) the Hoare annotation is: (or (not (= |~#d1~0.offset| 0)) (not (= |~#d2~0.offset| 0)) (and (= main_~pd2~0.base main_~pd1~0.base) (= main_~pd2~0.offset main_~pd1~0.offset) (let ((.cse0 (= main_~pd2~0.offset 0))) (or (and .cse0 (= main_~pd2~0.base |~#d2~0.base|)) (and (not (= |~#d1~0.base| |~#d2~0.base|)) .cse0))) (= main_~pd2~0.base main_~pa~0.base) (= main_~pd2~0.offset main_~pa~0.offset) (not (= main_~pd1~0.base 0)) (<= (select (select |#memory_int| main_~pd2~0.base) main_~pd2~0.offset) main_~i~0) (<= main_~i~0 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset)))) [2023-03-31 00:08:18,053 INFO L902 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: true [2023-03-31 00:08:18,053 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2023-03-31 00:08:18,053 INFO L895 garLoopResultBuilder]: At program point ERROR(lines 33 52) the Hoare annotation is: (or (not (= |~#d1~0.offset| 0)) (not (= |~#d2~0.offset| 0))) [2023-03-31 00:08:18,054 INFO L899 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2023-03-31 00:08:18,054 INFO L899 garLoopResultBuilder]: For program point L43-1(lines 43 45) no Hoare annotation was computed. [2023-03-31 00:08:18,054 INFO L899 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2023-03-31 00:08:18,054 INFO L899 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2023-03-31 00:08:18,054 INFO L899 garLoopResultBuilder]: For program point L37-2(lines 37 46) no Hoare annotation was computed. [2023-03-31 00:08:18,054 INFO L902 garLoopResultBuilder]: At program point L35-1(line 35) the Hoare annotation is: true [2023-03-31 00:08:18,054 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 27 30) the Hoare annotation is: true [2023-03-31 00:08:18,054 INFO L899 garLoopResultBuilder]: For program point checkFINAL(lines 27 30) no Hoare annotation was computed. [2023-03-31 00:08:18,054 INFO L899 garLoopResultBuilder]: For program point checkEXIT(lines 27 30) no Hoare annotation was computed. [2023-03-31 00:08:18,054 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2023-03-31 00:08:18,054 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: (and (= |old(~#d2~0.offset)| |~#d2~0.offset|) (= |old(~#d1~0.offset)| |~#d1~0.offset|) (= |old(~#d2~0.base)| |~#d2~0.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(~#d1~0.base)| |~#d1~0.base|) (= |old(#NULL.base)| |#NULL.base|)) [2023-03-31 00:08:18,054 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-03-31 00:08:18,054 INFO L899 garLoopResultBuilder]: For program point get_dummyFINAL(lines 22 25) no Hoare annotation was computed. [2023-03-31 00:08:18,054 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 22 25) the Hoare annotation is: true [2023-03-31 00:08:18,054 INFO L899 garLoopResultBuilder]: For program point get_dummyEXIT(lines 22 25) no Hoare annotation was computed. [2023-03-31 00:08:18,055 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-03-31 00:08:18,055 INFO L895 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (and (= |~#d2~0.offset| 0) (= |~#d1~0.offset| 0)) [2023-03-31 00:08:18,055 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-03-31 00:08:18,055 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 00:08:18,057 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-03-31 00:08:18,058 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 00:08:18,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 12:08:18 BoogieIcfgContainer [2023-03-31 00:08:18,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 00:08:18,068 INFO L158 Benchmark]: Toolchain (without parser) took 7483.90ms. Allocated memory was 363.9MB in the beginning and 514.9MB in the end (delta: 151.0MB). Free memory was 317.9MB in the beginning and 206.2MB in the end (delta: 111.7MB). Peak memory consumption was 263.2MB. Max. memory is 8.0GB. [2023-03-31 00:08:18,069 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 192.9MB. Free memory is still 146.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 00:08:18,069 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.20ms. Allocated memory is still 363.9MB. Free memory was 317.4MB in the beginning and 306.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 00:08:18,069 INFO L158 Benchmark]: Boogie Preprocessor took 35.03ms. Allocated memory is still 363.9MB. Free memory was 306.9MB in the beginning and 305.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 00:08:18,069 INFO L158 Benchmark]: RCFGBuilder took 292.10ms. Allocated memory is still 363.9MB. Free memory was 305.3MB in the beginning and 291.7MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-03-31 00:08:18,069 INFO L158 Benchmark]: TraceAbstraction took 6968.72ms. Allocated memory was 363.9MB in the beginning and 514.9MB in the end (delta: 151.0MB). Free memory was 291.1MB in the beginning and 206.2MB in the end (delta: 84.9MB). Peak memory consumption was 237.0MB. Max. memory is 8.0GB. [2023-03-31 00:08:18,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 192.9MB. Free memory is still 146.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 183.20ms. Allocated memory is still 363.9MB. Free memory was 317.4MB in the beginning and 306.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.03ms. Allocated memory is still 363.9MB. Free memory was 306.9MB in the beginning and 305.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 292.10ms. Allocated memory is still 363.9MB. Free memory was 305.3MB in the beginning and 291.7MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 6968.72ms. Allocated memory was 363.9MB in the beginning and 514.9MB in the end (delta: 151.0MB). Free memory was 291.1MB in the beginning and 206.2MB in the end (delta: 84.9MB). Peak memory consumption was 237.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 50]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.9s, OverallIterations: 5, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 339 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 326 mSDsluCounter, 77 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 60 mSDsCounter, 101 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1152 IncrementalHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 101 mSolverCounterUnsat, 17 mSDtfsCounter, 1152 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 428 GetRequests, 296 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1069 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=4, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 19 PreInvPairs, 30 NumberOfFragments, 193 HoareAnnotationTreeSize, 19 FomulaSimplifications, 86 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 13 FomulaSimplificationsInter, 725 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 339 NumberOfCodeBlocks, 323 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 463 ConstructedInterpolants, 0 QuantifiedInterpolants, 2394 SizeOfPredicates, 31 NumberOfNonLiveVariables, 626 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 342/495 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (!(d1 == 0) || !(d2 == 0)) || ((((((pd2 == pd1 && pd2 == pd1) && ((pd2 == 0 && pd2 == d2) || (!(d1 == d2) && pd2 == 0))) && pd2 == pa) && pd2 == pa) && !(pd1 == 0)) && i <= unknown-#memory_int-unknown[pa][pa]) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: !(d1 == 0) || !(d2 == 0) RESULT: Ultimate proved your program to be correct! [2023-03-31 00:08:18,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...